feat: Initial commit

2025-07-14 16:22:26 +05:30
commit 1d91e20db5
25 changed files with 5635 additions and 0 deletions
--- a/.envrc
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -0,0 +1,62 @@
+name: build
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  checks-matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: DeterminateSystems/magic-nix-cache-action@main
+      - id: set-matrix
+        name: Generate Nix Matrix
+        run: |
+          set -Eeu
+          matrix="$(nix eval --json '.#githubActions.matrix')"
+          echo "matrix=$matrix" >> "$GITHUB_OUTPUT"
+
+  checks-build:
+    needs: checks-matrix
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix: ${{fromJSON(needs.checks-matrix.outputs.matrix)}}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: DeterminateSystems/magic-nix-cache-action@main
+      - run: nix build -L '.#${{ matrix.attr }}'
+
+  codecov:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: "write"
+      contents: "read"
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: DeterminateSystems/nix-installer-action@main
+    - uses: DeterminateSystems/magic-nix-cache-action@main
+
+    - name: Run codecov
+      run: nix build .#checks.x86_64-linux.hello-llvm-cov
+
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v4.0.1
+      with:
+        flags: unittests
+        name: codecov-hello
+        fail_ci_if_error: true
+        token: ${{ secrets.CODECOV_TOKEN }}
+        files: ./result
+        verbose: true
+
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -0,0 +1,38 @@
+name: docs
+
+on:
+  push:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  docs:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: "write"
+      contents: "read"
+      pages: "write"
+
+    steps:
+    - uses: actions/checkout@v4
+    - uses: DeterminateSystems/nix-installer-action@main
+    - uses: DeterminateSystems/magic-nix-cache-action@main
+    - uses: DeterminateSystems/flake-checker-action@main
+
+    - name: Generate docs
+      run: nix build .#checks.x86_64-linux.hello-docs
+
+    - name: Setup Pages
+      uses: actions/configure-pages@v5
+
+    - name: Upload artifact
+      uses: actions/upload-pages-artifact@v3
+      with:
+        path: result/share/doc
+
+    - name: Deploy to gh-pages
+      id: deployment
+      uses: actions/deploy-pages@v4
+
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,4 @@
+/result
+/target
+.direnv
+*.jpg
--- a/Cargo.lock
+++ b/Cargo.lock
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -0,0 +1,44 @@
+[package]
+name = "detector"
+version = "0.1.0"
+edition = "2024"
+license = "MIT"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+# [patch."https://github.com/aftershootco/mnn-rs".mnn]
+# path = "/Users/fs0c131y/Projects/aftershoot/mnn-rs"
+# [patch."https://github.com/aftershootco/mnn-rs".mnn-sys]
+# path = "/Users/fs0c131y/Projects/aftershoot/mnn-rs/mnn-sys"
+# [patch."https://github.com/aftershootco/mnn-rs".mnn-sync]
+# path = "/Users/fs0c131y/Projects/aftershoot/mnn-rs/mnn-sync"
+# [patch."https://github.com/aftershootco/mnn-rs".mnn-bridge]
+# path = "/Users/fs0c131y/Projects/aftershoot/mnn-rs/mnn-bridge"
+
+[dependencies]
+clap = { version = "4.5", features = ["derive"] }
+clap_complete = "4.5"
+error-stack = "0.5"
+image = "0.25.6"
+linfa = "0.7.1"
+# mnn = { git = "https://github.com/aftershootco/mnn-rs", version = "0.2.0", features = [
+mnn = { path = "/Users/fs0c131y/Projects/aftershoot/mnn-rs", version = "0.2.0", features = [
+  "metal",
+  "tracing",
+] }
+mnn-bridge = { path = "/Users/fs0c131y/Projects/aftershoot/mnn-rs/mnn-bridge", version = "0.1.0", features = [
+  "ndarray",
+] }
+mnn-sync = { path = "/Users/fs0c131y/Projects/aftershoot/mnn-rs/mnn-sync", version = "0.1.0", features = [
+  "tracing",
+] }
+ndarray = "0.16.1"
+ndarray-image = { version = "0.1.0", path = "ndarray-image" }
+rusqlite = { version = "0.36.0", features = ["modern-full"] }
+thiserror = "2.0"
+tokio = "1.43.1"
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+
+[profile.release]
+debug = true
--- a/bbox/Cargo.toml
+++ b/bbox/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "bbox"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+ndarray = "0.16"
+num = "0.4.3"
+serde = { version = "1", features = ["derive"], optional = true }
+
+[features]
+serde = ["dep:serde"]
+default = ["serde"]
--- a/bbox/src/lib.rs
+++ b/bbox/src/lib.rs
@@ -0,0 +1,708 @@
+pub mod traits;
+
+/// A bounding box of co-ordinates whose origin is at the top-left corner.
+#[derive(
+    Debug, Copy, Clone, PartialEq, PartialOrd, Eq, Hash, serde::Serialize, serde::Deserialize,
+)]
+#[non_exhaustive]
+pub struct BBox<T = f32> {
+    pub x: T,
+    pub y: T,
+    pub width: T,
+    pub height: T,
+}
+
+impl<T> From<[T; 4]> for BBox<T> {
+    fn from([x, y, width, height]: [T; 4]) -> Self {
+        Self {
+            x,
+            y,
+            width,
+            height,
+        }
+    }
+}
+
+impl<T: Copy> BBox<T> {
+    pub fn new(x: T, y: T, width: T, height: T) -> Self {
+        Self {
+            x,
+            y,
+            width,
+            height,
+        }
+    }
+
+    /// Casts the internal values to another type using [as] keyword
+    pub fn cast<T2>(self) -> BBox<T2>
+    where
+        T: num::cast::AsPrimitive<T2>,
+        T2: Copy + 'static,
+    {
+        BBox {
+            x: self.x.as_(),
+            y: self.y.as_(),
+            width: self.width.as_(),
+            height: self.height.as_(),
+        }
+    }
+
+    /// Clamps all the internal values to the given min and max.
+    pub fn clamp(&self, min: T, max: T) -> Self
+    where
+        T: std::cmp::PartialOrd,
+    {
+        Self {
+            x: num::clamp(self.x, min, max),
+            y: num::clamp(self.y, min, max),
+            width: num::clamp(self.width, min, max),
+            height: num::clamp(self.height, min, max),
+        }
+    }
+
+    pub fn clamp_box(&self, bbox: BBox<T>) -> Self
+    where
+        T: std::cmp::PartialOrd,
+        T: num::Zero,
+        T: core::ops::Add<Output = T>,
+        T: core::ops::Sub<Output = T>,
+    {
+        let x1 = num::clamp(self.x1(), bbox.x1(), bbox.x2());
+        let y1 = num::clamp(self.y1(), bbox.y1(), bbox.y2());
+        let x2 = num::clamp(self.x2(), bbox.x1(), bbox.x2());
+        let y2 = num::clamp(self.y2(), bbox.y1(), bbox.y2());
+        Self::new_xyxy(x1, y1, x2, y2)
+    }
+
+    pub fn normalize(&self, width: T, height: T) -> Self
+    where
+        T: core::ops::Div<Output = T> + Copy,
+    {
+        Self {
+            x: self.x / width,
+            y: self.y / height,
+            width: self.width / width,
+            height: self.height / height,
+        }
+    }
+
+    /// Normalize after casting to float
+    pub fn normalize_f64(&self, width: T, height: T) -> BBox<f64>
+    where
+        T: core::ops::Div<Output = T> + Copy,
+        T: num::cast::AsPrimitive<f64>,
+    {
+        BBox {
+            x: self.x.as_() / width.as_(),
+            y: self.y.as_() / height.as_(),
+            width: self.width.as_() / width.as_(),
+            height: self.height.as_() / height.as_(),
+        }
+    }
+
+    pub fn denormalize(&self, width: T, height: T) -> Self
+    where
+        T: core::ops::Mul<Output = T> + Copy,
+    {
+        Self {
+            x: self.x * width,
+            y: self.y * height,
+            width: self.width * width,
+            height: self.height * height,
+        }
+    }
+
+    pub fn height(&self) -> T {
+        self.height
+    }
+
+    pub fn width(&self) -> T {
+        self.width
+    }
+
+    pub fn padding(&self, padding: T) -> Self
+    where
+        T: core::ops::Add<Output = T> + core::ops::Sub<Output = T> + Copy,
+    {
+        Self {
+            x: self.x - padding,
+            y: self.y - padding,
+            width: self.width + padding + padding,
+            height: self.height + padding + padding,
+        }
+    }
+
+    pub fn padding_height(&self, padding: T) -> Self
+    where
+        T: core::ops::Add<Output = T> + core::ops::Sub<Output = T> + Copy,
+    {
+        Self {
+            x: self.x,
+            y: self.y - padding,
+            width: self.width,
+            height: self.height + padding + padding,
+        }
+    }
+
+    pub fn padding_width(&self, padding: T) -> Self
+    where
+        T: core::ops::Add<Output = T> + core::ops::Sub<Output = T> + Copy,
+    {
+        Self {
+            x: self.x - padding,
+            y: self.y,
+            width: self.width + padding + padding,
+            height: self.height,
+        }
+    }
+
+    // Enlarge / shrink the bounding box by a factor while
+    // keeping the center point and the aspect ratio fixed
+    pub fn scale(&self, factor: T) -> Self
+    where
+        T: core::ops::Mul<Output = T>,
+        T: core::ops::Sub<Output = T>,
+        T: core::ops::Add<Output = T>,
+        T: core::ops::Div<Output = T>,
+        T: num::One + Copy,
+    {
+        let two = num::one::<T>() + num::one::<T>();
+        let width = self.width * factor;
+        let height = self.height * factor;
+        let width_inc = width - self.width;
+        let height_inc = height - self.height;
+        Self {
+            x: self.x - width_inc / two,
+            y: self.y - height_inc / two,
+            width,
+            height,
+        }
+    }
+
+    pub fn scale_x(&self, factor: T) -> Self
+    where
+        T: core::ops::Mul<Output = T>
+            + core::ops::Sub<Output = T>
+            + core::ops::Add<Output = T>
+            + core::ops::Div<Output = T>
+            + num::One
+            + Copy,
+    {
+        let two = num::one::<T>() + num::one::<T>();
+        let width = self.width * factor;
+        let width_inc = width - self.width;
+        Self {
+            x: self.x - width_inc / two,
+            y: self.y,
+            width,
+            height: self.height,
+        }
+    }
+
+    pub fn scale_y(&self, factor: T) -> Self
+    where
+        T: core::ops::Mul<Output = T>
+            + core::ops::Sub<Output = T>
+            + core::ops::Add<Output = T>
+            + core::ops::Div<Output = T>
+            + num::One
+            + Copy,
+    {
+        let two = num::one::<T>() + num::one::<T>();
+        let height = self.height * factor;
+        let height_inc = height - self.height;
+        Self {
+            x: self.x,
+            y: self.y - height_inc / two,
+            width: self.width,
+            height,
+        }
+    }
+
+    pub fn offset(&self, offset: Point<T>) -> Self
+    where
+        T: core::ops::Add<Output = T> + Copy,
+    {
+        Self {
+            x: self.x + offset.x,
+            y: self.y + offset.y,
+            width: self.width,
+            height: self.height,
+        }
+    }
+
+    /// Translate the bounding box by the given offset
+    /// if they are in the same scale
+    pub fn translate(&self, bbox: Self) -> Self
+    where
+        T: core::ops::Add<Output = T> + Copy,
+    {
+        Self {
+            x: self.x + bbox.x,
+            y: self.y + bbox.y,
+            width: self.width,
+            height: self.height,
+        }
+    }
+
+    pub fn with_top_left(&self, top_left: Point<T>) -> Self {
+        Self {
+            x: top_left.x,
+            y: top_left.y,
+            width: self.width,
+            height: self.height,
+        }
+    }
+
+    pub fn center(&self) -> Point<T>
+    where
+        T: core::ops::Add<Output = T> + core::ops::Div<Output = T> + Copy,
+        T: num::One,
+    {
+        let two = T::one() + T::one();
+        Point::new(self.x + self.width / two, self.y + self.height / two)
+    }
+
+    pub fn area(&self) -> T
+    where
+        T: core::ops::Mul<Output = T> + Copy,
+    {
+        self.width * self.height
+    }
+
+    // Corresponds to self.x1() and self.y1()
+    pub fn top_left(&self) -> Point<T> {
+        Point::new(self.x, self.y)
+    }
+
+    pub fn top_right(&self) -> Point<T>
+    where
+        T: core::ops::Add<Output = T> + Copy,
+    {
+        Point::new(self.x + self.width, self.y)
+    }
+
+    pub fn bottom_left(&self) -> Point<T>
+    where
+        T: core::ops::Add<Output = T> + Copy,
+    {
+        Point::new(self.x, self.y + self.height)
+    }
+
+    // Corresponds to self.x2() and self.y2()
+    pub fn bottom_right(&self) -> Point<T>
+    where
+        T: core::ops::Add<Output = T> + Copy,
+    {
+        Point::new(self.x + self.width, self.y + self.height)
+    }
+
+    pub const fn x1(&self) -> T {
+        self.x
+    }
+
+    pub const fn y1(&self) -> T {
+        self.y
+    }
+
+    pub fn x2(&self) -> T
+    where
+        T: core::ops::Add<Output = T> + Copy,
+    {
+        self.x + self.width
+    }
+
+    pub fn y2(&self) -> T
+    where
+        T: core::ops::Add<Output = T> + Copy,
+    {
+        self.y + self.height
+    }
+
+    pub fn overlap(&self, other: &Self) -> T
+    where
+        T: std::cmp::PartialOrd
+            + traits::min::Min
+            + traits::max::Max
+            + num::Zero
+            + core::ops::Add<Output = T>
+            + core::ops::Sub<Output = T>
+            + core::ops::Mul<Output = T>
+            + Copy,
+    {
+        let x1 = self.x.max(other.x);
+        let y1 = self.y.max(other.y);
+        let x2 = (self.x + self.width).min(other.x + other.width);
+        let y2 = (self.y + self.height).min(other.y + other.height);
+        let width = (x2 - x1).max(T::zero());
+        let height = (y2 - y1).max(T::zero());
+        width * height
+    }
+
+    pub fn iou(&self, other: &Self) -> T
+    where
+        T: std::cmp::Ord
+            + num::Zero
+            + traits::min::Min
+            + traits::max::Max
+            + core::ops::Add<Output = T>
+            + core::ops::Sub<Output = T>
+            + core::ops::Mul<Output = T>
+            + core::ops::Div<Output = T>
+            + Copy,
+    {
+        let overlap = self.overlap(other);
+        let union = self.area() + other.area() - overlap;
+        overlap / union
+    }
+
+    pub fn contains(&self, point: Point<T>) -> bool
+    where
+        T: std::cmp::PartialOrd + core::ops::Add<Output = T> + Copy,
+    {
+        point.x >= self.x
+            && point.x <= self.x + self.width
+            && point.y >= self.y
+            && point.y <= self.y + self.height
+    }
+
+    pub fn contains_bbox(&self, other: Self) -> bool
+    where
+        T: std::cmp::PartialOrd + Copy,
+        T: core::ops::Add<Output = T>,
+    {
+        self.contains(other.top_left())
+            && self.contains(other.top_right())
+            && self.contains(other.bottom_left())
+            && self.contains(other.bottom_right())
+    }
+
+    pub fn new_xywh(x: T, y: T, width: T, height: T) -> Self {
+        Self {
+            x,
+            y,
+            width,
+            height,
+        }
+    }
+    pub fn new_xyxy(x1: T, y1: T, x2: T, y2: T) -> Self
+    where
+        T: core::ops::Sub<Output = T> + Copy,
+    {
+        Self {
+            x: x1,
+            y: y1,
+            width: x2 - x1,
+            height: y2 - y1,
+        }
+    }
+
+    pub fn containing(box1: Self, box2: Self) -> Self
+    where
+        T: traits::min::Min + traits::max::Max + Copy,
+        T: core::ops::Sub<Output = T>,
+        T: core::ops::Add<Output = T>,
+    {
+        let x1 = box1.x.min(box2.x);
+        let y1 = box1.y.min(box2.y);
+        let x2 = box1.x2().max(box2.x2());
+        let y2 = box1.y2().max(box2.y2());
+        Self::new_xyxy(x1, y1, x2, y2)
+    }
+}
+
+impl<T: core::ops::Sub<Output = T> + Copy> core::ops::Sub<T> for BBox<T> {
+    type Output = BBox<T>;
+    fn sub(self, rhs: T) -> Self::Output {
+        BBox {
+            x: self.x - rhs,
+            y: self.y - rhs,
+            width: self.width - rhs,
+            height: self.height - rhs,
+        }
+    }
+}
+
+impl<T: core::ops::Add<Output = T> + Copy> core::ops::Add<T> for BBox<T> {
+    type Output = BBox<T>;
+    fn add(self, rhs: T) -> Self::Output {
+        BBox {
+            x: self.x + rhs,
+            y: self.y + rhs,
+            width: self.width + rhs,
+            height: self.height + rhs,
+        }
+    }
+}
+impl<T: core::ops::Mul<Output = T> + Copy> core::ops::Mul<T> for BBox<T> {
+    type Output = BBox<T>;
+    fn mul(self, rhs: T) -> Self::Output {
+        BBox {
+            x: self.x * rhs,
+            y: self.y * rhs,
+            width: self.width * rhs,
+            height: self.height * rhs,
+        }
+    }
+}
+impl<T: core::ops::Div<Output = T> + Copy> core::ops::Div<T> for BBox<T> {
+    type Output = BBox<T>;
+    fn div(self, rhs: T) -> Self::Output {
+        BBox {
+            x: self.x / rhs,
+            y: self.y / rhs,
+            width: self.width / rhs,
+            height: self.height / rhs,
+        }
+    }
+}
+
+impl<T> core::ops::Add<BBox<T>> for BBox<T>
+where
+    T: core::ops::Sub<Output = T>
+        + core::ops::Add<Output = T>
+        + traits::min::Min
+        + traits::max::Max
+        + Copy,
+{
+    type Output = BBox<T>;
+    fn add(self, rhs: BBox<T>) -> Self::Output {
+        let x1 = self.x1().min(rhs.x1());
+        let y1 = self.y1().min(rhs.y1());
+        let x2 = self.x2().max(rhs.x2());
+        let y2 = self.y2().max(rhs.y2());
+        BBox::new_xyxy(x1, y1, x2, y2)
+    }
+}
+
+#[test]
+fn test_bbox_add() {
+    let bbox1: BBox<usize> = BBox::new_xyxy(0, 0, 10, 10);
+    let bbox2: BBox<usize> = BBox::new_xyxy(5, 5, 15, 15);
+    let bbox3: BBox<usize> = bbox1 + bbox2;
+    assert_eq!(bbox3, BBox::new_xyxy(0, 0, 15, 15).cast());
+}
+
+#[derive(
+    Debug, Copy, Clone, serde::Serialize, serde::Deserialize, PartialEq, PartialOrd, Eq, Ord, Hash,
+)]
+pub struct Point<T = f32> {
+    x: T,
+    y: T,
+}
+
+impl<T> Point<T> {
+    pub const fn new(x: T, y: T) -> Self {
+        Self { x, y }
+    }
+
+    pub const fn x(&self) -> T
+    where
+        T: Copy,
+    {
+        self.x
+    }
+
+    pub const fn y(&self) -> T
+    where
+        T: Copy,
+    {
+        self.y
+    }
+
+    pub fn cast<T2>(&self) -> Point<T2>
+    where
+        T: num::cast::AsPrimitive<T2>,
+        T2: Copy + 'static,
+    {
+        Point {
+            x: self.x.as_(),
+            y: self.y.as_(),
+        }
+    }
+}
+
+impl<T: core::ops::Sub<T, Output = T> + Copy> core::ops::Sub<Point<T>> for Point<T> {
+    type Output = Point<T>;
+    fn sub(self, rhs: Point<T>) -> Self::Output {
+        Point {
+            x: self.x - rhs.x,
+            y: self.y - rhs.y,
+        }
+    }
+}
+
+impl<T: core::ops::Add<T, Output = T> + Copy> core::ops::Add<Point<T>> for Point<T> {
+    type Output = Point<T>;
+    fn add(self, rhs: Point<T>) -> Self::Output {
+        Point {
+            x: self.x + rhs.x,
+            y: self.y + rhs.y,
+        }
+    }
+}
+
+impl<T: core::ops::Sub<Output = T> + Copy> Point<T> {
+    /// If both the boxes are in the same scale then make the translation of the origin to the
+    /// other box
+    pub fn with_origin(&self, origin: Self) -> Self {
+        *self - origin
+    }
+}
+
+impl<T: core::ops::Add<Output = T> + Copy> Point<T> {
+    pub fn translate(&self, point: Point<T>) -> Self {
+        *self + point
+    }
+}
+
+impl<I: num::Zero> BBox<I>
+where
+    I: num::cast::AsPrimitive<usize>,
+{
+    pub fn zeros_ndarray_2d<T: num::Zero + Copy>(&self) -> ndarray::Array2<T> {
+        ndarray::Array2::<T>::zeros((self.height.as_(), self.width.as_()))
+    }
+    pub fn zeros_ndarray_3d<T: num::Zero + Copy>(&self, channels: usize) -> ndarray::Array3<T> {
+        ndarray::Array3::<T>::zeros((self.height.as_(), self.width.as_(), channels))
+    }
+    pub fn ones_ndarray_2d<T: num::One + Copy>(&self) -> ndarray::Array2<T> {
+        ndarray::Array2::<T>::ones((self.height.as_(), self.width.as_()))
+    }
+}
+
+impl<T: num::Float> BBox<T> {
+    pub fn round(&self) -> Self {
+        Self {
+            x: self.x.round(),
+            y: self.y.round(),
+            width: self.width.round(),
+            height: self.height.round(),
+        }
+    }
+}
+
+#[cfg(test)]
+mod bbox_clamp_tests {
+    use super::*;
+    #[test]
+    pub fn bbox_test_clamp_box() {
+        let large_box = BBox::new(0, 0, 100, 100);
+        let small_box = BBox::new(10, 10, 20, 20);
+        let clamped = large_box.clamp_box(small_box);
+        assert_eq!(clamped, small_box);
+    }
+
+    #[test]
+    pub fn bbox_test_clamp_box_offset() {
+        let box_a = BBox::new(0, 0, 100, 100);
+        let box_b = BBox::new(-10, -10, 20, 20);
+        let clamped = box_b.clamp_box(box_a);
+        let expected = BBox::new(0, 0, 10, 10);
+        assert_eq!(expected, clamped);
+    }
+}
+
+#[cfg(test)]
+mod bbox_padding_tests {
+    use super::*;
+    #[test]
+    pub fn bbox_test_padding() {
+        let bbox = BBox::new(0, 0, 10, 10);
+        let padded = bbox.padding(2);
+        assert_eq!(padded, BBox::new(-2, -2, 14, 14));
+    }
+
+    #[test]
+    pub fn bbox_test_padding_height() {
+        let bbox = BBox::new(0, 0, 10, 10);
+        let padded = bbox.padding_height(2);
+        assert_eq!(padded, BBox::new(0, -2, 10, 14));
+    }
+
+    #[test]
+    pub fn bbox_test_padding_width() {
+        let bbox = BBox::new(0, 0, 10, 10);
+        let padded = bbox.padding_width(2);
+        assert_eq!(padded, BBox::new(-2, 0, 14, 10));
+    }
+
+    #[test]
+    pub fn bbox_test_clamped_padding() {
+        let bbox = BBox::new(0, 0, 10, 10);
+        let padded = bbox.padding(2);
+        let clamp = BBox::new(0, 0, 12, 12);
+        let clamped = padded.clamp_box(clamp);
+        assert_eq!(clamped, clamp);
+    }
+
+    #[test]
+    pub fn bbox_clamp_failure() {
+        let og = BBox::new(475.0, 79.625, 37.0, 282.15);
+        let padded = BBox {
+            x: 471.3,
+            y: 51.412499999999994,
+            width: 40.69999999999999,
+            height: 338.54999999999995,
+        };
+        let clamp = BBox::new(0.0, 0.0, 512.0, 512.0);
+        let sus = padded.clamp_box(clamp);
+        assert!(clamp.contains_bbox(sus));
+    }
+}
+
+#[cfg(test)]
+mod bbox_scale_tests {
+    use super::*;
+    #[test]
+    pub fn bbox_test_scale_int() {
+        let bbox = BBox::new(0, 0, 10, 10);
+        let scaled = bbox.scale(2);
+        assert_eq!(scaled, BBox::new(-5, -5, 20, 20));
+    }
+
+    #[test]
+    pub fn bbox_test_scale_float() {
+        let bbox = BBox::new(0, 0, 10, 10).cast();
+        let scaled = bbox.scale(1.05); // 5% increase
+        let l = 10.0 * 0.05;
+        assert_eq!(scaled, BBox::new(-l / 2.0, -l / 2.0, 10.0 + l, 10.0 + l));
+    }
+
+    #[test]
+    pub fn bbox_test_scale_float_negative() {
+        let bbox = BBox::new(0, 0, 10, 10).cast();
+        let scaled = bbox.scale(0.95); // 5% decrease
+        let l = -10.0 * 0.05;
+        assert_eq!(scaled, BBox::new(-l / 2.0, -l / 2.0, 10.0 + l, 10.0 + l));
+    }
+
+    #[test]
+    pub fn bbox_scale_float() {
+        let bbox = BBox::new_xywh(0, 0, 200, 200);
+        let scaled = bbox.cast::<f64>().scale(1.1).cast::<i32>().clamp(0, 1000);
+        let expected = BBox::new(0, 0, 220, 220);
+        assert_eq!(scaled, expected);
+    }
+    #[test]
+    pub fn add_padding_bbox_example() {
+        // let result = add_padding_bbox(
+        //     vec![Rect::new(100, 200, 300, 400)],
+        //     (0.1, 0.1),
+        //     (1000, 1000),
+        // );
+        //   assert_eq!(result[0], Rect::new(70, 160, 360, 480));
+        let bbox = BBox::new(100, 200, 300, 400);
+        let scaled = bbox.cast::<f64>().scale(1.2).cast::<i32>().clamp(0, 1000);
+        assert_eq!(bbox, BBox::new(100, 200, 300, 400));
+        assert_eq!(scaled, BBox::new(70, 160, 360, 480));
+    }
+    #[test]
+    pub fn scale_bboxes() {
+        // let result = scale_bboxes(Rect::new(100, 200, 300, 400), (1000, 1000), (500, 500));
+        // assert_eq!(result[0], Rect::new(200, 400, 600, 800));
+        let bbox = BBox::new(100, 200, 300, 400);
+        let scaled = bbox.scale(2);
+        assert_eq!(scaled, BBox::new(200, 400, 600, 800));
+    }
+}
--- a/bbox/src/traits.rs
+++ b/bbox/src/traits.rs
@@ -0,0 +1,2 @@
+pub mod max;
+pub mod min;
--- a/bbox/src/traits/max.rs
+++ b/bbox/src/traits/max.rs
@@ -0,0 +1,27 @@
+pub trait Max: Sized + Copy {
+    fn max(self, other: Self) -> Self;
+}
+
+macro_rules! impl_max {
+    ($($t:ty),*) => {
+        $(
+            impl Max for $t {
+                fn max(self, other: Self) -> Self {
+                    Ord::max(self, other)
+                }
+            }
+        )*
+    };
+    (float $($t:ty),*) => {
+        $(
+            impl Max for $t {
+                fn max(self, other: Self) -> Self {
+                    Self::max(self, other)
+                }
+            }
+        )*
+    };
+}
+
+impl_max!(usize, u8, u16, u32, u64, u128, isize, i8, i16, i32, i64, i128);
+impl_max!(float f32, f64);
--- a/bbox/src/traits/min.rs
+++ b/bbox/src/traits/min.rs
@@ -0,0 +1,27 @@
+pub trait Min: Sized + Copy {
+    fn min(self, other: Self) -> Self;
+}
+
+macro_rules! impl_min {
+    ($($t:ty),*) => {
+        $(
+            impl Min for $t {
+                fn min(self, other: Self) -> Self {
+                    Ord::min(self, other)
+                }
+            }
+        )*
+    };
+    (float $($t:ty),*) => {
+        $(
+            impl Min for $t {
+                fn min(self, other: Self) -> Self {
+                    Self::min(self, other)
+                }
+            }
+        )*
+    };
+}
+
+impl_min!(usize, u8, u16, u32, u64, u128, isize, i8, i16, i32, i64, i128);
+impl_min!(float f32, f64);
--- a/deny.toml
+++ b/deny.toml
@@ -0,0 +1,236 @@
+# This template contains all of the possible sections and their default values
+
+# Note that all fields that take a lint level have these possible values:
+# * deny - An error will be produced and the check will fail
+# * warn - A warning will be produced, but the check will not fail
+# * allow - No warning or error will be produced, though in some cases a note
+# will be
+
+# The values provided in this template are the default values that will be used
+# when any section or field is not specified in your own configuration
+
+# Root options
+
+# The graph table configures how the dependency graph is constructed and thus
+# which crates the checks are performed against
+[graph]
+# If 1 or more target triples (and optionally, target_features) are specified,
+# only the specified targets will be checked when running `cargo deny check`.
+# This means, if a particular package is only ever used as a target specific
+# dependency, such as, for example, the `nix` crate only being used via the
+# `target_family = "unix"` configuration, that only having windows targets in
+# this list would mean the nix crate, as well as any of its exclusive
+# dependencies not shared by any other crates, would be ignored, as the target
+# list here is effectively saying which targets you are building for.
+targets = [
+  # The triple can be any string, but only the target triples built in to
+  # rustc (as of 1.40) can be checked against actual config expressions
+  #"x86_64-unknown-linux-musl",
+  # You can also specify which target_features you promise are enabled for a
+  # particular target. target_features are currently not validated against
+  # the actual valid features supported by the target architecture.
+  #{ triple = "wasm32-unknown-unknown", features = ["atomics"] },
+]
+# When creating the dependency graph used as the source of truth when checks are
+# executed, this field can be used to prune crates from the graph, removing them
+# from the view of cargo-deny. This is an extremely heavy hammer, as if a crate
+# is pruned from the graph, all of its dependencies will also be pruned unless
+# they are connected to another crate in the graph that hasn't been pruned,
+# so it should be used with care. The identifiers are [Package ID Specifications]
+# (https://doc.rust-lang.org/cargo/reference/pkgid-spec.html)
+#exclude = []
+# If true, metadata will be collected with `--all-features`. Note that this can't
+# be toggled off if true, if you want to conditionally enable `--all-features` it
+# is recommended to pass `--all-features` on the cmd line instead
+all-features = false
+# If true, metadata will be collected with `--no-default-features`. The same
+# caveat with `all-features` applies
+no-default-features = false
+# If set, these feature will be enabled when collecting metadata. If `--features`
+# is specified on the cmd line they will take precedence over this option.
+#features = []
+
+# The output table provides options for how/if diagnostics are outputted
+[output]
+# When outputting inclusion graphs in diagnostics that include features, this
+# option can be used to specify the depth at which feature edges will be added.
+# This option is included since the graphs can be quite large and the addition
+# of features from the crate(s) to all of the graph roots can be far too verbose.
+# This option can be overridden via `--feature-depth` on the cmd line
+feature-depth = 1
+
+# This section is considered when running `cargo deny check advisories`
+# More documentation for the advisories section can be found here:
+# https://embarkstudios.github.io/cargo-deny/checks/advisories/cfg.html
+[advisories]
+# The path where the advisory databases are cloned/fetched into
+#db-path = "$CARGO_HOME/advisory-dbs"
+# The url(s) of the advisory databases to use
+#db-urls = ["https://github.com/rustsec/advisory-db"]
+# A list of advisory IDs to ignore. Note that ignored advisories will still
+# output a note when they are encountered.
+ignore = [
+  #"RUSTSEC-0000-0000",
+  #{ id = "RUSTSEC-0000-0000", reason = "you can specify a reason the advisory is ignored" },
+  #"a-crate-that-is-yanked@0.1.1", # you can also ignore yanked crate versions if you wish
+  #{ crate = "a-crate-that-is-yanked@0.1.1", reason = "you can specify why you are ignoring the yanked crate" },
+]
+# If this is true, then cargo deny will use the git executable to fetch advisory database.
+# If this is false, then it uses a built-in git library.
+# Setting this to true can be helpful if you have special authentication requirements that cargo-deny does not support.
+# See Git Authentication for more information about setting up git authentication.
+#git-fetch-with-cli = true
+
+# This section is considered when running `cargo deny check licenses`
+# More documentation for the licenses section can be found here:
+# https://embarkstudios.github.io/cargo-deny/checks/licenses/cfg.html
+[licenses]
+# List of explicitly allowed licenses
+# See https://spdx.org/licenses/ for list of possible licenses
+# [possible values: any SPDX 3.11 short identifier (+ optional exception)].
+allow = [
+  "MIT",
+  "Apache-2.0",
+  "Unicode-3.0",
+  #"Apache-2.0 WITH LLVM-exception",
+]
+# The confidence threshold for detecting a license from license text.
+# The higher the value, the more closely the license text must be to the
+# canonical license text of a valid SPDX license file.
+# [possible values: any between 0.0 and 1.0].
+confidence-threshold = 0.8
+# Allow 1 or more licenses on a per-crate basis, so that particular licenses
+# aren't accepted for every possible crate as with the normal allow list
+exceptions = [
+  # Each entry is the crate and version constraint, and its specific allow
+  # list
+  #{ allow = ["Zlib"], crate = "adler32" },
+]
+
+# Some crates don't have (easily) machine readable licensing information,
+# adding a clarification entry for it allows you to manually specify the
+# licensing information
+#[[licenses.clarify]]
+# The package spec the clarification applies to
+#crate = "ring"
+# The SPDX expression for the license requirements of the crate
+#expression = "MIT AND ISC AND OpenSSL"
+# One or more files in the crate's source used as the "source of truth" for
+# the license expression. If the contents match, the clarification will be used
+# when running the license check, otherwise the clarification will be ignored
+# and the crate will be checked normally, which may produce warnings or errors
+# depending on the rest of your configuration
+#license-files = [
+# Each entry is a crate relative path, and the (opaque) hash of its contents
+#{ path = "LICENSE", hash = 0xbd0eed23 }
+#]
+
+[licenses.private]
+# If true, ignores workspace crates that aren't published, or are only
+# published to private registries.
+# To see how to mark a crate as unpublished (to the official registry),
+# visit https://doc.rust-lang.org/cargo/reference/manifest.html#the-publish-field.
+ignore = false
+# One or more private registries that you might publish crates to, if a crate
+# is only published to private registries, and ignore is true, the crate will
+# not have its license(s) checked
+registries = [
+  #"https://sekretz.com/registry
+]
+
+# This section is considered when running `cargo deny check bans`.
+# More documentation about the 'bans' section can be found here:
+# https://embarkstudios.github.io/cargo-deny/checks/bans/cfg.html
+[bans]
+# Lint level for when multiple versions of the same crate are detected
+multiple-versions = "warn"
+# Lint level for when a crate version requirement is `*`
+wildcards = "allow"
+# The graph highlighting used when creating dotgraphs for crates
+# with multiple versions
+# * lowest-version - The path to the lowest versioned duplicate is highlighted
+# * simplest-path - The path to the version with the fewest edges is highlighted
+# * all - Both lowest-version and simplest-path are used
+highlight = "all"
+# The default lint level for `default` features for crates that are members of
+# the workspace that is being checked. This can be overridden by allowing/denying
+# `default` on a crate-by-crate basis if desired.
+workspace-default-features = "allow"
+# The default lint level for `default` features for external crates that are not
+# members of the workspace. This can be overridden by allowing/denying `default`
+# on a crate-by-crate basis if desired.
+external-default-features = "allow"
+# List of crates that are allowed. Use with care!
+allow = [
+  #"ansi_term@0.11.0",
+  #{ crate = "ansi_term@0.11.0", reason = "you can specify a reason it is allowed" },
+]
+# List of crates to deny
+deny = [
+  #"ansi_term@0.11.0",
+  #{ crate = "ansi_term@0.11.0", reason = "you can specify a reason it is banned" },
+  # Wrapper crates can optionally be specified to allow the crate when it
+  # is a direct dependency of the otherwise banned crate
+  #{ crate = "ansi_term@0.11.0", wrappers = ["this-crate-directly-depends-on-ansi_term"] },
+]
+
+# List of features to allow/deny
+# Each entry the name of a crate and a version range. If version is
+# not specified, all versions will be matched.
+#[[bans.features]]
+#crate = "reqwest"
+# Features to not allow
+#deny = ["json"]
+# Features to allow
+#allow = [
+#    "rustls",
+#    "__rustls",
+#    "__tls",
+#    "hyper-rustls",
+#    "rustls",
+#    "rustls-pemfile",
+#    "rustls-tls-webpki-roots",
+#    "tokio-rustls",
+#    "webpki-roots",
+#]
+# If true, the allowed features must exactly match the enabled feature set. If
+# this is set there is no point setting `deny`
+#exact = true
+
+# Certain crates/versions that will be skipped when doing duplicate detection.
+skip = [
+  #"ansi_term@0.11.0",
+  #{ crate = "ansi_term@0.11.0", reason = "you can specify a reason why it can't be updated/removed" },
+]
+# Similarly to `skip` allows you to skip certain crates during duplicate
+# detection. Unlike skip, it also includes the entire tree of transitive
+# dependencies starting at the specified crate, up to a certain depth, which is
+# by default infinite.
+skip-tree = [
+  #"ansi_term@0.11.0", # will be skipped along with _all_ of its direct and transitive dependencies
+  #{ crate = "ansi_term@0.11.0", depth = 20 },
+]
+
+# This section is considered when running `cargo deny check sources`.
+# More documentation about the 'sources' section can be found here:
+# https://embarkstudios.github.io/cargo-deny/checks/sources/cfg.html
+[sources]
+# Lint level for what to happen when a crate from a crate registry that is not
+# in the allow list is encountered
+unknown-registry = "warn"
+# Lint level for what to happen when a crate from a git repository that is not
+# in the allow list is encountered
+unknown-git = "warn"
+# List of URLs for allowed crate registries. Defaults to the crates.io index
+# if not specified. If it is specified but empty, no registries are allowed.
+allow-registry = ["https://github.com/rust-lang/crates.io-index"]
+# List of URLs for allowed Git repositories
+allow-git = []
+
+[sources.allow-org]
+# github.com organizations to allow git sources for
+github = []
+# gitlab.com organizations to allow git sources for
+gitlab = []
+# bitbucket.org organizations to allow git sources for
+bitbucket = []
--- a/flake.lock
+++ b/flake.lock
@@ -0,0 +1,227 @@
+{
+  "nodes": {
+    "advisory-db": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1750151065,
+        "narHash": "sha256-il+CAqChFIB82xP6bO43dWlUVs+NlG7a4g8liIP5HcI=",
+        "owner": "rustsec",
+        "repo": "advisory-db",
+        "rev": "7573f55ba337263f61167dbb0ea926cdc7c8eb5d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rustsec",
+        "repo": "advisory-db",
+        "type": "github"
+      }
+    },
+    "crane": {
+      "locked": {
+        "lastModified": 1750266157,
+        "narHash": "sha256-tL42YoNg9y30u7zAqtoGDNdTyXTi8EALDeCB13FtbQA=",
+        "owner": "ipetkov",
+        "repo": "crane",
+        "rev": "e37c943371b73ed87faf33f7583860f81f1d5a48",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ipetkov",
+        "repo": "crane",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "mnn": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1749173738,
+        "narHash": "sha256-pNljvQ4xMZ4VmuxQyXt+boNBZD0+UZNpNLrWrj8Rtfw=",
+        "owner": "alibaba",
+        "repo": "MNN",
+        "rev": "ebdada82634300956e08bd4056ecfeb1e4f23b32",
+        "type": "github"
+      },
+      "original": {
+        "owner": "alibaba",
+        "ref": "3.2.0",
+        "repo": "MNN",
+        "type": "github"
+      }
+    },
+    "mnn-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "mnn": "mnn",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1749204972,
+        "narHash": "sha256-ICLU408iwxZA7uETBmEBuuForBIPLvonuy1hW/fuiME=",
+        "owner": "uttarayan21",
+        "repo": "mnn-nix-overlay",
+        "rev": "7b97393977689e851a6840a8e1cbea058e67363a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "uttarayan21",
+        "repo": "mnn-nix-overlay",
+        "type": "github"
+      }
+    },
+    "mnn-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1749173738,
+        "narHash": "sha256-pNljvQ4xMZ4VmuxQyXt+boNBZD0+UZNpNLrWrj8Rtfw=",
+        "owner": "alibaba",
+        "repo": "MNN",
+        "rev": "ebdada82634300956e08bd4056ecfeb1e4f23b32",
+        "type": "github"
+      },
+      "original": {
+        "owner": "alibaba",
+        "ref": "3.2.0",
+        "repo": "MNN",
+        "type": "github"
+      }
+    },
+    "nix-github-actions": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1737420293,
+        "narHash": "sha256-F1G5ifvqTpJq7fdkT34e/Jy9VCyzd5XfJ9TO8fHhJWE=",
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "rev": "f4158fa080ef4503c8f4c820967d946c2af31ec9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1750506804,
+        "narHash": "sha256-VLFNc4egNjovYVxDGyBYTrvVCgDYgENp5bVi9fPTDYc=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "4206c4cb56751df534751b058295ea61357bbbaa",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "advisory-db": "advisory-db",
+        "crane": "crane",
+        "flake-utils": "flake-utils",
+        "mnn-overlay": "mnn-overlay",
+        "mnn-src": "mnn-src",
+        "nix-github-actions": "nix-github-actions",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1750732748,
+        "narHash": "sha256-HR2b3RHsPeJm+Fb+1ui8nXibgniVj7hBNvUbXEyz0DU=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "4b4494b2ba7e8a8041b2e28320b2ee02c115c75f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
--- a/flake.nix
+++ b/flake.nix
@@ -0,0 +1,176 @@
+{
+  description = "A simple rust flake using rust-overlay and craneLib";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    crane.url = "github:ipetkov/crane";
+    nix-github-actions = {
+      url = "github:nix-community/nix-github-actions";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    advisory-db = {
+      url = "github:rustsec/advisory-db";
+      flake = false;
+    };
+    mnn-overlay = {
+      url = "github:uttarayan21/mnn-nix-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    mnn-src = {
+      url = "github:alibaba/MNN/3.2.0";
+      flake = false;
+    };
+  };
+
+  outputs = {
+    self,
+    crane,
+    flake-utils,
+    nixpkgs,
+    rust-overlay,
+    advisory-db,
+    nix-github-actions,
+    mnn-overlay,
+    mnn-src,
+    ...
+  }:
+    flake-utils.lib.eachDefaultSystem (
+      system: let
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [
+            rust-overlay.overlays.default
+            (final: prev: {
+              mnn = mnn-overlay.packages.${system}.mnn.override {
+                src = mnn-src;
+                buildConverter = true;
+                enableMetal = true;
+                enableOpencl = true;
+              };
+            })
+          ];
+        };
+        inherit (pkgs) lib;
+        cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
+        name = cargoToml.package.name;
+
+        stableToolchain = pkgs.rust-bin.stable.latest.default;
+        stableToolchainWithLLvmTools = stableToolchain.override {
+          extensions = ["rust-src" "llvm-tools"];
+        };
+        stableToolchainWithRustAnalyzer = stableToolchain.override {
+          extensions = ["rust-src" "rust-analyzer"];
+        };
+        craneLib = (crane.mkLib pkgs).overrideToolchain stableToolchain;
+        craneLibLLvmTools = (crane.mkLib pkgs).overrideToolchain stableToolchainWithLLvmTools;
+
+        src = let
+          filterBySuffix = path: exts: lib.any (ext: lib.hasSuffix ext path) exts;
+          sourceFilters = path: type: (craneLib.filterCargoSources path type) || filterBySuffix path [".c" ".h" ".hpp" ".cpp" ".cc"];
+        in
+          lib.cleanSourceWith {
+            filter = sourceFilters;
+            src = ./.;
+          };
+        commonArgs =
+          {
+            inherit src;
+            pname = name;
+            stdenv = pkgs.clangStdenv;
+            doCheck = false;
+            # LIBCLANG_PATH = "${pkgs.llvmPackages.libclang.lib}/lib";
+            # nativeBuildInputs = with pkgs; [
+            #   cmake
+            #   llvmPackages.libclang.lib
+            # ];
+            buildInputs = with pkgs;
+              []
+              ++ (lib.optionals pkgs.stdenv.isDarwin [
+                libiconv
+                apple-sdk_13
+              ]);
+          }
+          // (lib.optionalAttrs pkgs.stdenv.isLinux {
+            # BINDGEN_EXTRA_CLANG_ARGS = "-I${pkgs.llvmPackages.libclang.lib}/lib/clang/18/include";
+          });
+        cargoArtifacts = craneLib.buildPackage commonArgs;
+      in {
+        checks =
+          {
+            "${name}-clippy" = craneLib.cargoClippy (commonArgs
+              // {
+                inherit cargoArtifacts;
+                cargoClippyExtraArgs = "--all-targets -- --deny warnings";
+              });
+            "${name}-docs" = craneLib.cargoDoc (commonArgs // {inherit cargoArtifacts;});
+            "${name}-fmt" = craneLib.cargoFmt {inherit src;};
+            "${name}-toml-fmt" = craneLib.taploFmt {
+              src = pkgs.lib.sources.sourceFilesBySuffices src [".toml"];
+            };
+            # Audit dependencies
+            "${name}-audit" = craneLib.cargoAudit {
+              inherit src advisory-db;
+            };
+
+            # Audit licenses
+            "${name}-deny" = craneLib.cargoDeny {
+              inherit src;
+            };
+            "${name}-nextest" = craneLib.cargoNextest (commonArgs
+              // {
+                inherit cargoArtifacts;
+                partitions = 1;
+                partitionType = "count";
+              });
+          }
+          // lib.optionalAttrs (!pkgs.stdenv.isDarwin) {
+            "${name}-llvm-cov" = craneLibLLvmTools.cargoLlvmCov (commonArgs // {inherit cargoArtifacts;});
+          };
+
+        packages = let
+          pkg = craneLib.buildPackage (commonArgs
+            // {inherit cargoArtifacts;}
+            // {
+              nativeBuildInputs = with pkgs; [
+                installShellFiles
+              ];
+              postInstall = ''
+                installShellCompletion --cmd ${name} \
+                  --bash <($out/bin/${name} completions bash) \
+                  --fish <($out/bin/${name} completions fish) \
+                  --zsh <($out/bin/${name} completions zsh)
+              '';
+            });
+        in {
+          "${name}" = pkg;
+          default = pkg;
+        };
+
+        devShells = {
+          default = pkgs.mkShell.override {stdenv = pkgs.clangStdenv;} (commonArgs
+            // {
+              packages = with pkgs;
+                [
+                  stableToolchainWithRustAnalyzer
+                  cargo-nextest
+                  cargo-deny
+                  mnn
+                ]
+                ++ (lib.optionals pkgs.stdenv.isDarwin [
+                  apple-sdk_13
+                ]);
+            });
+        };
+      }
+    )
+    // {
+      githubActions = nix-github-actions.lib.mkGithubMatrix {
+        checks = nixpkgs.lib.getAttrs ["x86_64-linux"] self.checks;
+      };
+    };
+}
--- a/models/retinaface.mnn
+++ b/models/retinaface.mnn
--- a/ndarray-image/.gitignore
+++ b/ndarray-image/.gitignore
@@ -0,0 +1 @@
+/target
--- a/ndarray-image/Cargo.lock
+++ b/ndarray-image/Cargo.lock
--- a/ndarray-image/Cargo.toml
+++ b/ndarray-image/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "ndarray-image"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+image = "0.25.6"
+ndarray = "0.16.1"
--- a/ndarray-image/src/lib.rs
+++ b/ndarray-image/src/lib.rs
@@ -0,0 +1,181 @@
+type Result<T, E = ndarray::ShapeError> = core::result::Result<T, E>;
+mod rgb8 {
+    use super::Result;
+    pub(super) fn image_as_ndarray(image: &image::RgbImage) -> Result<ndarray::ArrayView3<u8>> {
+        let (width, height) = image.dimensions();
+        let data = image.as_raw();
+        ndarray::ArrayView3::from_shape((height as usize, width as usize, 3), data)
+    }
+    pub(super) fn image_into_ndarray(image: image::RgbImage) -> Result<ndarray::Array3<u8>> {
+        let (width, height) = image.dimensions();
+        let data = image.into_raw();
+        ndarray::Array3::from_shape_vec((height as usize, width as usize, 3), data)
+    }
+}
+
+mod rgba8 {
+    use super::Result;
+    pub(super) fn image_as_ndarray(image: &image::RgbaImage) -> Result<ndarray::ArrayView3<u8>> {
+        let (width, height) = image.dimensions();
+        let data = image.as_raw();
+        ndarray::ArrayView3::from_shape((height as usize, width as usize, 4), data)
+    }
+    pub(super) fn image_into_ndarray(image: image::RgbaImage) -> Result<ndarray::Array3<u8>> {
+        let (width, height) = image.dimensions();
+        let data = image.into_raw();
+        ndarray::Array3::from_shape_vec((height as usize, width as usize, 4), data)
+    }
+}
+
+mod gray8 {
+    use super::Result;
+    pub(super) fn image_as_ndarray(image: &image::GrayImage) -> Result<ndarray::ArrayView2<u8>> {
+        let (width, height) = image.dimensions();
+        let data = image.as_raw();
+        ndarray::ArrayView2::from_shape((height as usize, width as usize), data)
+    }
+    pub(super) fn image_into_ndarray(image: image::GrayImage) -> Result<ndarray::Array2<u8>> {
+        let (width, height) = image.dimensions();
+        let data = image.into_raw();
+        ndarray::Array2::from_shape_vec((height as usize, width as usize), data)
+    }
+}
+
+mod gray_alpha8 {
+    use super::Result;
+    pub(super) fn image_as_ndarray(
+        image: &image::GrayAlphaImage,
+    ) -> Result<ndarray::ArrayView3<u8>> {
+        let (width, height) = image.dimensions();
+        let data = image.as_raw();
+        ndarray::ArrayView3::from_shape((height as usize, width as usize, 2), data)
+    }
+    pub(super) fn image_into_ndarray(image: image::GrayAlphaImage) -> Result<ndarray::Array3<u8>> {
+        let (width, height) = image.dimensions();
+        let data = image.into_raw();
+        ndarray::Array3::from_shape_vec((height as usize, width as usize, 2), data)
+    }
+}
+
+mod dynamic_image {
+    use super::*;
+    pub fn image_as_ndarray(image: &image::DynamicImage) -> Result<ndarray::ArrayViewD<u8>> {
+        Ok(match image {
+            image::DynamicImage::ImageRgb8(img) => rgb8::image_as_ndarray(img)?.into_dyn(),
+            image::DynamicImage::ImageRgba8(img) => rgba8::image_as_ndarray(img)?.into_dyn(),
+            image::DynamicImage::ImageLuma8(img) => gray8::image_as_ndarray(img)?.into_dyn(),
+            image::DynamicImage::ImageLumaA8(img) => gray_alpha8::image_as_ndarray(img)?.into_dyn(),
+            _ => {
+                unimplemented!("Unsupported image format: {:?}", image);
+            }
+        })
+    }
+    pub fn image_into_ndarray(image: image::DynamicImage) -> Result<ndarray::ArrayD<u8>> {
+        Ok(match image {
+            image::DynamicImage::ImageRgb8(img) => rgb8::image_into_ndarray(img)?.into_dyn(),
+            image::DynamicImage::ImageRgba8(img) => rgba8::image_into_ndarray(img)?.into_dyn(),
+            image::DynamicImage::ImageLuma8(img) => gray8::image_into_ndarray(img)?.into_dyn(),
+            image::DynamicImage::ImageLumaA8(img) => {
+                gray_alpha8::image_into_ndarray(img)?.into_dyn()
+            }
+            _ => {
+                unimplemented!("Unsupported image format: {:?}", image);
+            }
+        })
+    }
+}
+pub trait ImageToNdarray {
+    type OwnedOutput;
+    type RefOutput<'a>
+    where
+        Self: 'a;
+
+    fn as_ndarray<'a>(&'a self) -> Result<Self::RefOutput<'a>>;
+    fn to_ndarray(&self) -> Result<Self::OwnedOutput>;
+    fn into_ndarray(self) -> Result<Self::OwnedOutput>;
+}
+
+impl ImageToNdarray for image::RgbImage {
+    type OwnedOutput = ndarray::Array3<u8>;
+    type RefOutput<'a> = ndarray::ArrayView3<'a, u8>;
+
+    fn as_ndarray<'a>(&'a self) -> Result<Self::RefOutput<'a>> {
+        rgb8::image_as_ndarray(self)
+    }
+
+    fn to_ndarray(&self) -> Result<Self::OwnedOutput> {
+        Ok(self.as_ndarray()?.to_owned())
+    }
+
+    fn into_ndarray(self) -> Result<Self::OwnedOutput> {
+        rgb8::image_into_ndarray(self)
+    }
+}
+
+impl ImageToNdarray for image::RgbaImage {
+    type OwnedOutput = ndarray::Array3<u8>;
+    type RefOutput<'a> = ndarray::ArrayView3<'a, u8>;
+
+    fn as_ndarray<'a>(&'a self) -> Result<Self::RefOutput<'a>> {
+        rgba8::image_as_ndarray(self)
+    }
+
+    fn to_ndarray(&self) -> Result<Self::OwnedOutput> {
+        Ok(self.as_ndarray()?.to_owned())
+    }
+
+    fn into_ndarray(self) -> Result<Self::OwnedOutput> {
+        rgba8::image_into_ndarray(self)
+    }
+}
+
+impl ImageToNdarray for image::GrayImage {
+    type OwnedOutput = ndarray::Array2<u8>;
+    type RefOutput<'a> = ndarray::ArrayView2<'a, u8>;
+
+    fn as_ndarray<'a>(&'a self) -> Result<Self::RefOutput<'a>> {
+        gray8::image_as_ndarray(self)
+    }
+
+    fn to_ndarray(&self) -> Result<Self::OwnedOutput> {
+        Ok(self.as_ndarray()?.to_owned())
+    }
+
+    fn into_ndarray(self) -> Result<Self::OwnedOutput> {
+        gray8::image_into_ndarray(self)
+    }
+}
+
+impl ImageToNdarray for image::GrayAlphaImage {
+    type OwnedOutput = ndarray::Array3<u8>;
+    type RefOutput<'a> = ndarray::ArrayView3<'a, u8>;
+
+    fn as_ndarray<'a>(&'a self) -> Result<Self::RefOutput<'a>> {
+        gray_alpha8::image_as_ndarray(self)
+    }
+
+    fn to_ndarray(&self) -> Result<Self::OwnedOutput> {
+        Ok(self.as_ndarray()?.to_owned())
+    }
+
+    fn into_ndarray(self) -> Result<Self::OwnedOutput> {
+        gray_alpha8::image_into_ndarray(self)
+    }
+}
+
+impl ImageToNdarray for image::DynamicImage {
+    type OwnedOutput = ndarray::ArrayD<u8>;
+    type RefOutput<'a> = ndarray::ArrayViewD<'a, u8>;
+
+    fn as_ndarray<'a>(&'a self) -> Result<Self::RefOutput<'a>> {
+        dynamic_image::image_as_ndarray(self)
+    }
+
+    fn to_ndarray(&self) -> Result<Self::OwnedOutput> {
+        Ok(self.as_ndarray()?.to_owned())
+    }
+
+    fn into_ndarray(self) -> Result<Self::OwnedOutput> {
+        dynamic_image::image_into_ndarray(self)
+    }
+}
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -0,0 +1,64 @@
+use std::path::PathBuf;
+#[derive(Debug, clap::Parser)]
+pub struct Cli {
+    #[clap(subcommand)]
+    pub cmd: SubCommand,
+}
+
+#[derive(Debug, clap::Subcommand)]
+pub enum SubCommand {
+    #[clap(name = "detect")]
+    Detect(Detect),
+    #[clap(name = "list")]
+    List(List),
+    #[clap(name = "completions")]
+    Completions { shell: clap_complete::Shell },
+}
+
+#[derive(Debug, clap::ValueEnum, Clone, Copy)]
+pub enum Models {
+    RetinaFace,
+}
+
+#[derive(Debug, clap::ValueEnum, Clone, Copy)]
+pub enum Executor {
+    Mnn,
+    Onnx,
+}
+
+#[derive(Debug, clap::ValueEnum, Clone, Copy)]
+pub enum OnnxEp {
+    Cpu,
+}
+
+#[derive(Debug, clap::ValueEnum, Clone, Copy)]
+pub enum MnnEp {
+    Cpu,
+    Metal,
+    OpenCL,
+    CoreML,
+}
+
+#[derive(Debug, clap::Args)]
+pub struct Detect {
+    #[clap(short, long)]
+    pub model: Option<PathBuf>,
+    #[clap(short = 'M', long, default_value = "retina-face")]
+    pub model_type: Models,
+    pub image: PathBuf,
+}
+
+#[derive(Debug, clap::Args)]
+pub struct List {}
+
+impl Cli {
+    pub fn completions(shell: clap_complete::Shell) {
+        let mut command = <Cli as clap::CommandFactory>::command();
+        clap_complete::generate(
+            shell,
+            &mut command,
+            env!("CARGO_BIN_NAME"),
+            &mut std::io::stdout(),
+        );
+    }
+}
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -0,0 +1,6 @@
+pub use error_stack::{Report, ResultExt};
+#[derive(Debug, thiserror::Error)]
+#[error("An error occurred")]
+pub struct Error;
+
+pub type Result<T, E = error_stack::Report<Error>> = core::result::Result<T, E>;
--- a/src/facedet.rs
+++ b/src/facedet.rs
@@ -0,0 +1,73 @@
+use crate::errors::*;
+use error_stack::ResultExt;
+use mnn_bridge::ndarray::NdarrayToMnn;
+use std::path::Path;
+
+pub struct FaceDetection {
+    handle: mnn_sync::SessionHandle,
+}
+
+impl FaceDetection {
+    pub fn new(path: impl AsRef<Path>) -> Result<Self> {
+        let model = std::fs::read(path)
+            .change_context(Error)
+            .attach_printable("Failed to read model file")?;
+        Self::new_from_bytes(&model)
+    }
+
+    pub fn new_from_bytes(model: &[u8]) -> Result<Self> {
+        tracing::info!("Loading face detection model from bytes");
+        let mut model = mnn::Interpreter::from_bytes(model)
+            .map_err(|e| e.into_inner())
+            .change_context(Error)
+            .attach_printable("Failed to load model from bytes")?;
+        model.set_session_mode(mnn::SessionMode::Release);
+        let bc = mnn::BackendConfig::default().with_memory_mode(mnn::MemoryMode::High);
+        let sc = mnn::ScheduleConfig::new()
+            
+            
+            
+            
+            
+            
+            .with_type(mnn::ForwardType::CPU)
+            .with_backend_config(bc);
+        tracing::info!("Creating session handle for face detection model");
+        let handle = mnn_sync::SessionHandle::new(model, sc)
+            .change_context(Error)
+            .attach_printable("Failed to create session handle")?;
+        Ok(FaceDetection { handle })
+    }
+
+    pub fn detect_faces(&self, image: ndarray::Array3<u8>) -> Result<ndarray::Array2<u8>> {
+        use mnn_bridge::ndarray::MnnToNdarray;
+        let output = self
+            .handle
+            .run(move |sr| {
+                let tensor = image
+                    .as_mnn_tensor()
+                    .ok_or_else(|| Error)
+                    .attach_printable("Failed to convert ndarray to mnn tensor")
+                    .change_context(mnn::error::ErrorKind::TensorError)?;
+                let (intptr, session) = sr.both_mut();
+                tracing::trace!("Copying input tensor to host");
+                // let input = intptr.input::<u8>(session, "input")?;
+                // dbg!(input.shape());
+                // let mut t = input.create_host_tensor_from_device(false);
+                // tensor.copy_to_host_tensor(&mut t)?;
+                //
+                // intptr.run_session(&session)?;
+                // let output = intptr.output::<u8>(&session, "output").unwrap();
+                // let output_tensor = output.create_host_tensor_from_device(true);
+                // let output_array = output_tensor
+                //     .try_as_ndarray()
+                //     .change_context(mnn::error::ErrorKind::TensorError)?
+                //     .to_owned();
+                // Ok(output_array)
+                Ok(ndarray::Array2::<u8>::zeros((1, 1))) // Placeholder for actual output
+            })
+            .map_err(|e| e.into_inner())
+            .change_context(Error);
+        output
+    }
+}
--- a/src/image.rs
+++ b/src/image.rs
@@ -0,0 +1,5 @@
+// pub struct Image {
+//     pub width: u32,
+//     pub height: u32,
+//     pub data: Vec<u8>,
+// }
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -0,0 +1,4 @@
+pub mod errors;
+pub mod facedet;
+pub mod image;
+use errors::*;
--- a/src/main.rs
+++ b/src/main.rs
@@ -0,0 +1,37 @@
+mod cli;
+mod errors;
+use errors::*;
+use ndarray_image::*;
+const RETINAFACE_MODEL: &[u8] = include_bytes!("../models/retinaface.mnn");
+pub fn main() -> Result<()> {
+    tracing_subscriber::fmt()
+        .with_env_filter("trace")
+        .with_thread_ids(true)
+        .with_thread_names(true)
+        .with_target(false)
+        .init();
+    let args = <cli::Cli as clap::Parser>::parse();
+    match args.cmd {
+        cli::SubCommand::Detect(detect) => {
+            use detector::facedet;
+            let model = facedet::FaceDetection::new_from_bytes(RETINAFACE_MODEL)
+                .change_context(errors::Error)
+                .attach_printable("Failed to create face detection model")?;
+            let image = image::open(detect.image).change_context(Error)?;
+            let image = image.into_rgb8();
+            let array = image.into_ndarray()
+                .change_context(errors::Error)
+                .attach_printable("Failed to convert image to ndarray")?;
+            model.detect_faces(array)
+                .change_context(errors::Error)
+                .attach_printable("Failed to detect faces")?;
+        }
+        cli::SubCommand::List(list) => {
+            println!("List: {:?}", list);
+        }
+        cli::SubCommand::Completions { shell } => {
+            cli::Cli::completions(shell);
+        }
+    }
+    Ok(())
+}