feat: Added bounding-box crate

Cargo.lock

@@ -125,6 +125,15 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "approx"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cab112f0a86d568ea0e627cc1d6be74a1e9cd55214684db5561995f6dad897c6"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "arbitrary"
 version = "1.4.1"
@@ -202,7 +211,7 @@ dependencies = [
  "bitflags 2.9.1",
  "cexpr",
  "clang-sys",
- "itertools 0.12.1",
+ "itertools 0.13.0",
  "log",
  "prettyplease",
  "proc-macro2",
@@ -472,14 +481,18 @@ dependencies = [
  "clap",
  "clap_complete",
  "error-stack",
+ "fast_image_resize",
  "image",
  "linfa",
  "mnn",
  "mnn-bridge",
  "mnn-sync",
+ "nalgebra",
  "ndarray 0.16.1",
  "ndarray-image",
+ "ndarray-resize",
  "rusqlite",
+ "tap",
  "thiserror 2.0.12",
  "tokio",
  "tracing",
@@ -506,6 +519,15 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "document-features"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95249b50c6c185bee49034bcb378a49dc2b5dff0be90ff6616d31d64febab05d"
+dependencies = [
+ "litrs",
+]
+
 [[package]]
 name = "dunce"
 version = "1.0.5"
@@ -581,6 +603,18 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7360491ce676a36bf9bb3c56c1aa791658183a54d2744120f27285738d90465a"
 
+[[package]]
+name = "fast_image_resize"
+version = "5.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65b170c19bafa740b919227a619d8b958fbc9fb5899b9af68bd075c3b3284fc0"
+dependencies = [
+ "cfg-if",
+ "document-features",
+ "num-traits",
+ "thiserror 1.0.69",
+]
+
 [[package]]
 name = "fdeflate"
 version = "0.3.7"
@@ -1037,7 +1071,7 @@ version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56f9097edc7c89d03d526efbacf6d90914e3a8fa53bd56c2d1489e3a90819370"
 dependencies = [
- "approx",
+ "approx 0.4.0",
  "ndarray 0.15.6",
  "num-traits",
  "rand",
@@ -1051,6 +1085,12 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "241eaef5fd12c88705a01fc1066c48c4b36e0dd4377dcdc7ec3942cea7a69956"
 
+[[package]]
+name = "litrs"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4ce301924b7887e9d637144fdade93f9dfff9b60981d4ac161db09720d39aa5"
+
 [[package]]
 name = "lock_api"
 version = "0.4.13"
@@ -1178,6 +1218,33 @@ dependencies = [
  "tracing-core",
 ]
 
+[[package]]
+name = "nalgebra"
+version = "0.33.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26aecdf64b707efd1310e3544d709c5c0ac61c13756046aaaba41be5c4f66a3b"
+dependencies = [
+ "approx 0.5.1",
+ "matrixmultiply",
+ "nalgebra-macros",
+ "num-complex",
+ "num-rational",
+ "num-traits",
+ "simba",
+ "typenum",
+]
+
+[[package]]
+name = "nalgebra-macros"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "254a5372af8fc138e36684761d3c0cdb758a4410e938babcff1c860ce14ddbfc"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "nanorand"
 version = "0.7.0"
@@ -1193,7 +1260,7 @@ version = "0.15.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "adb12d4e967ec485a5f71c6311fe28158e9d6f4bc4a447b474184d0f91a8fa32"
 dependencies = [
- "approx",
+ "approx 0.4.0",
  "matrixmultiply",
  "num-complex",
  "num-integer",
@@ -1224,6 +1291,18 @@ dependencies = [
  "ndarray 0.16.1",
 ]
 
+[[package]]
+name = "ndarray-resize"
+version = "0.1.0"
+dependencies = [
+ "bytemuck",
+ "error-stack",
+ "fast_image_resize",
+ "ndarray 0.16.1",
+ "num",
+ "thiserror 2.0.12",
+]
+
 [[package]]
 name = "new_debug_unreachable"
 version = "1.0.6"
@@ -1265,6 +1344,20 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "num"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35bd024e8b2ff75562e5f34e7f4905839deb4b22955ef5e73d2fea1b9813cb23"
+dependencies = [
+ "num-bigint",
+ "num-complex",
+ "num-integer",
+ "num-iter",
+ "num-rational",
+ "num-traits",
+]
+
 [[package]]
 name = "num-bigint"
 version = "0.4.6"
@@ -1310,6 +1403,17 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-iter"
+version = "0.1.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1429034a0490724d0075ebb2bc9e875d6503c3cf69e235a8941aa757d83ef5bf"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-rational"
 version = "0.4.2"
@@ -1711,6 +1815,15 @@ version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
 
+[[package]]
+name = "safe_arch"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96b02de82ddbe1b636e6170c21be622223aea188ef2e139be0a5b219ec215323"
+dependencies = [
+ "bytemuck",
+]
+
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
@@ -1779,6 +1892,19 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
+[[package]]
+name = "simba"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b3a386a501cd104797982c15ae17aafe8b9261315b5d07e3ec803f2ea26be0fa"
+dependencies = [
+ "approx 0.5.1",
+ "num-complex",
+ "num-traits",
+ "paste",
+ "wide",
+]
+
 [[package]]
 name = "simd-adler32"
 version = "0.3.7"
@@ -2087,6 +2213,12 @@ dependencies = [
  "tracing-log",
 ]
 
+[[package]]
+name = "typenum"
+version = "1.18.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1dccffe3ce07af9386bfd29e80c0ab1a8205a2fc34e4bcd40364df902cfa8f3f"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.18"
@@ -2240,6 +2372,16 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a751b3277700db47d3e574514de2eced5e54dc8a5436a3bf7a0b248b2cee16f3"
 
+[[package]]
+name = "wide"
+version = "0.7.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ce5da8ecb62bcd8ec8b7ea19f69a51275e91299be594ea5cc6ef7819e16cd03"
+dependencies = [
+ "bytemuck",
+ "safe_arch",
+]
+
 [[package]]
 name = "winapi"
 version = "0.3.9"

Cargo.toml

@@ -19,6 +19,7 @@ license = "MIT"
 clap = { version = "4.5", features = ["derive"] }
 clap_complete = "4.5"
 error-stack = "0.5"
+fast_image_resize = "5.2.0"
 image = "0.25.6"
 linfa = "0.7.1"
 # mnn = { git = "https://github.com/aftershootco/mnn-rs", version = "0.2.0", features = [
@@ -32,9 +33,12 @@ mnn-bridge = { path = "/Users/fs0c131y/Projects/aftershoot/mnn-rs/mnn-bridge", v
 mnn-sync = { path = "/Users/fs0c131y/Projects/aftershoot/mnn-rs/mnn-sync", version = "0.1.0", features = [
   "tracing",
 ] }
+nalgebra = "0.33.2"
 ndarray = "0.16.1"
 ndarray-image = { version = "0.1.0", path = "ndarray-image" }
+ndarray-resize = { version = "0.1.0", path = "ndarray-resize" }
 rusqlite = { version = "0.36.0", features = ["modern-full"] }
+tap = "1.0.1"
 thiserror = "2.0"
 tokio = "1.43.1"
 tracing = "0.1"

bounding-box/Cargo.lock

@@ -0,0 +1,227 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "approx"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cab112f0a86d568ea0e627cc1d6be74a1e9cd55214684db5561995f6dad897c6"
+dependencies = [
+ "num-traits",
+]
+
+[[package]]
+name = "autocfg"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
+
+[[package]]
+name = "bounding-box"
+version = "0.1.0"
+dependencies = [
+ "nalgebra",
+ "num",
+]
+
+[[package]]
+name = "bytemuck"
+version = "1.23.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c76a5792e44e4abe34d3abf15636779261d45a7450612059293d1d2cfc63422"
+
+[[package]]
+name = "matrixmultiply"
+version = "0.3.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a06de3016e9fae57a36fd14dba131fccf49f74b40b7fbdb472f96e361ec71a08"
+dependencies = [
+ "autocfg",
+ "rawpointer",
+]
+
+[[package]]
+name = "nalgebra"
+version = "0.33.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26aecdf64b707efd1310e3544d709c5c0ac61c13756046aaaba41be5c4f66a3b"
+dependencies = [
+ "approx",
+ "matrixmultiply",
+ "nalgebra-macros",
+ "num-complex",
+ "num-rational",
+ "num-traits",
+ "simba",
+ "typenum",
+]
+
+[[package]]
+name = "nalgebra-macros"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "254a5372af8fc138e36684761d3c0cdb758a4410e938babcff1c860ce14ddbfc"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "num"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35bd024e8b2ff75562e5f34e7f4905839deb4b22955ef5e73d2fea1b9813cb23"
+dependencies = [
+ "num-bigint",
+ "num-complex",
+ "num-integer",
+ "num-iter",
+ "num-rational",
+ "num-traits",
+]
+
+[[package]]
+name = "num-bigint"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5e44f723f1133c9deac646763579fdb3ac745e418f2a7af9cd0c431da1f20b9"
+dependencies = [
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-complex"
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+checksum = "73f88a1307638156682bada9d7604135552957b7818057dcef22705b4d509495"
+dependencies = [
+ "num-traits",
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+[[package]]
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+ "num-traits",
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+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f83d14da390562dca69fc84082e73e548e1ad308d24accdedd2720017cb37824"
+dependencies = [
+ "num-bigint",
+ "num-integer",
+ "num-traits",
+]
+
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+ "unicode-ident",
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+
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+dependencies = [
+ "proc-macro2",
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+
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+
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+dependencies = [
+ "bytemuck",
+]
+
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+name = "simba"
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+dependencies = [
+ "approx",
+ "num-complex",
+ "num-traits",
+ "paste",
+ "wide",
+]
+
+[[package]]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "typenum"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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+
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+dependencies = [
+ "bytemuck",
+ "safe_arch",
+]

bounding-box/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "bounding-box"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+nalgebra = "0.33.2"
+num = "0.4.3"

bounding-box/src/lib.rs

@@ -0,0 +1,165 @@
+use nalgebra::{Point, Point2, SVector};
+pub trait Num: num::Num + Copy + core::fmt::Debug + 'static {}
+impl<T: num::Num + Copy + core::fmt::Debug + 'static> Num for T {}
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+pub struct BoundingBox<T: Num, const D: usize> {
+    /// The point of the bounding box closest to the origin
+    point: Point<T, D>,
+    /// The size of the bounding box in each dimension
+    size: SVector<T, D>,
+}
+
+impl<T: Num, const D: usize> BoundingBox<T, D> {
+    pub fn new(point: Point<T, D>, size: SVector<T, D>) -> Self {
+        Self { point, size }
+    }
+
+    pub fn point(&self) -> &Point<T, D> {
+        &self.point
+    }
+
+    pub fn size(&self) -> &SVector<T, D> {
+        &self.size
+    }
+
+    pub fn center(&self) -> Point<T, D>
+    where
+        T: core::ops::AddAssign,
+        T: core::ops::DivAssign,
+    {
+        self.point + self.size / (T::one() + T::one())
+    }
+
+    pub fn padding(mut self, padding: T) -> Self
+    where
+        T: core::ops::AddAssign,
+        T: core::ops::DivAssign,
+        T: core::ops::SubAssign,
+    {
+        self.size.iter_mut().for_each(|s| {
+            *s += padding;
+        });
+        let two = T::one() + T::one();
+        self.point
+            .coords
+            .iter_mut()
+            .for_each(|c| *c -= padding / two);
+        self
+    }
+
+    pub fn translate(&mut self, translation: SVector<T, D>)
+    where
+        T: core::ops::AddAssign,
+    {
+        self.point += translation;
+    }
+
+    pub fn contains(&self, point: &Point<T, D>) -> bool
+    where
+        T: core::ops::AddAssign,
+        T: core::ops::SubAssign,
+        T: PartialOrd,
+    {
+        let p1 = self.point.coords;
+        let p2 = self.point.coords + self.size;
+
+        point.coords > p1 && point.coords < p2
+    }
+}
+
+pub type BoundingBox2D<T> = BoundingBox<T, 2>;
+pub type BoundingBox3D<T> = BoundingBox<T, 3>;
+
+impl<T: Num> BoundingBox2D<T> {
+    pub fn new_2d(point1: Point2<T>, point2: Point2<T>) -> Self
+    where
+        T: core::ops::SubAssign,
+    {
+        let size = point2.coords - point1.coords;
+        Self::new(point1, SVector::from(size))
+    }
+    pub fn x1y1(&self) -> Point2<T> {
+        self.point
+    }
+
+    pub fn x2y2(&self) -> Point2<T>
+    where
+        T: core::ops::AddAssign,
+    {
+        self.point + self.size
+    }
+
+    pub fn x2y1(&self) -> Point2<T>
+    where
+        T: core::ops::AddAssign,
+    {
+        Point2::new(self.point.x + self.size.x, self.point.y)
+    }
+
+    pub fn x1y2(&self) -> Point2<T>
+    where
+        T: core::ops::AddAssign,
+    {
+        Point2::new(self.point.x, self.point.y + self.size.y)
+    }
+
+    pub fn corners(&self) -> [Point2<T>; 4]
+    where
+        T: core::ops::AddAssign,
+    {
+        [self.x1y1(), self.x2y1(), self.x2y2(), self.x1y2()]
+    }
+}
+
+#[test]
+fn test_bbox_new() {
+    use nalgebra::{Point2, Vector2};
+
+    let point1 = Point2::new(1.0, 2.0);
+    let point2 = Point2::new(4.0, 6.0);
+    let bbox = BoundingBox::new_2d(point1, point2);
+
+    assert_eq!(bbox.point(), &point1);
+    assert_eq!(bbox.size(), &Vector2::new(3.0, 4.0));
+    assert_eq!(bbox.center(), Point2::new(2.5, 4.0));
+}
+
+#[test]
+fn test_bounding_box_center_2d() {
+    use nalgebra::{Point2, Vector2};
+
+    let point = Point2::new(1.0, 2.0);
+    let size = Vector2::new(3.0, 4.0);
+    let bbox = BoundingBox::new(point, size);
+
+    assert_eq!(bbox.point(), &point);
+    assert_eq!(bbox.size(), &size);
+    assert_eq!(bbox.center(), Point2::new(2.5, 4.0));
+}
+
+#[test]
+fn test_bounding_box_center_3d() {
+    use nalgebra::{Point3, Vector3};
+
+    let point = Point3::new(1.0, 2.0, 3.0);
+    let size = Vector3::new(4.0, 5.0, 6.0);
+    let bbox = BoundingBox::new(point, size);
+
+    assert_eq!(bbox.point(), &point);
+    assert_eq!(bbox.size(), &size);
+    assert_eq!(bbox.center(), Point3::new(3.0, 4.5, 6.0));
+}
+
+#[test]
+fn test_bounding_box_padding_2d() {
+    use nalgebra::{Point2, Vector2};
+
+    let point = Point2::new(1.0, 2.0);
+    let size = Vector2::new(3.0, 4.0);
+    let bbox = BoundingBox::new(point, size);
+
+    let padded_bbox = bbox.padding(1.0);
+    assert_eq!(padded_bbox.point(), &Point2::new(0.5, 1.5));
+    assert_eq!(padded_bbox.size(), &Vector2::new(4.0, 5.0));
+}

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+ "safe_arch",
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flake.nix

@@ -154,6 +154,7 @@
         devShells = {
           default = pkgs.mkShell.override {stdenv = pkgs.clangStdenv;} (commonArgs
             // {
+              LLDB_DEBUGSERVER_PATH = "/Applications/Xcode.app/Contents/SharedFrameworks/LLDB.framework/Versions/A/Resources/debugserver";
               packages = with pkgs;
                 [
                   stableToolchainWithRustAnalyzer

justfile

@@ -0,0 +1,2 @@
+run:
+    cargo run -r detect -- ./1000066593.jpg

ndarray-resize/Cargo.lock

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ndarray-resize/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "ndarray-resize"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+bytemuck = "1.23.1"
+error-stack = "0.5.0"
+fast_image_resize = "5.2.0"
+ndarray = "0.16.1"
+num = "0.4.3"
+thiserror = "2.0.12"

ndarray-resize/src/lib.rs

@@ -0,0 +1,262 @@
+use error_stack::*;
+use fast_image_resize::*;
+use images::{Image, ImageRef};
+#[derive(Debug, Clone, thiserror::Error)]
+#[error("NdFirError")]
+pub struct NdFirError;
+type Result<T, E = Report<NdFirError>> = std::result::Result<T, E>;
+
+pub trait NdAsImage<T: seal::Sealed, D: ndarray::Dimension>: Sized {
+    fn as_image_ref(&self) -> Result<ImageRef<'_>>;
+}
+
+pub trait NdAsImageMut<T: seal::Sealed, D: ndarray::Dimension>: Sized {
+    fn as_image_ref_mut(&mut self) -> Result<Image<'_>>;
+}
+
+pub struct NdarrayImageContainer<'a, T: seal::Sealed, D: ndarray::Dimension> {
+    #[allow(dead_code)]
+    data: ndarray::ArrayView<'a, T, D>,
+    pub _phantom: std::marker::PhantomData<(T, D)>,
+}
+
+impl<'a, T: seal::Sealed> NdarrayImageContainer<'a, T, ndarray::Ix3> {
+    pub fn new<S: ndarray::Data<Elem = T>>(array: &'a ndarray::ArrayBase<S, ndarray::Ix3>) -> Self {
+        Self {
+            data: array.view(),
+            _phantom: std::marker::PhantomData,
+        }
+    }
+}
+
+impl<'a, T: seal::Sealed> NdarrayImageContainer<'a, T, ndarray::Ix2> {
+    pub fn new<S: ndarray::Data<Elem = T>>(array: &'a ndarray::ArrayBase<S, ndarray::Ix2>) -> Self {
+        Self {
+            data: array.view(),
+            _phantom: std::marker::PhantomData,
+        }
+    }
+}
+pub struct NdarrayImageContainerMut<'a, T: seal::Sealed, D: ndarray::Dimension> {
+    #[allow(dead_code)]
+    data: ndarray::ArrayViewMut<'a, T, D>,
+}
+
+impl<'a, T: seal::Sealed> NdarrayImageContainerMut<'a, T, ndarray::Ix3> {
+    pub fn new<S: ndarray::DataMut<Elem = T>>(
+        array: &'a mut ndarray::ArrayBase<S, ndarray::Ix3>,
+    ) -> Self {
+        Self {
+            data: array.view_mut(),
+        }
+    }
+}
+
+impl<'a, T: seal::Sealed> NdarrayImageContainerMut<'a, T, ndarray::Ix2> {
+    pub fn new<S: ndarray::DataMut<Elem = T>>(
+        array: &'a mut ndarray::ArrayBase<S, ndarray::Ix2>,
+    ) -> Self {
+        Self {
+            data: array.view_mut(),
+        }
+    }
+}
+
+pub struct NdarrayImageContainerTyped<'a, T: seal::Sealed, D: ndarray::Dimension, P: PixelTrait> {
+    #[allow(dead_code)]
+    data: ndarray::ArrayView<'a, T, D>,
+    __marker: std::marker::PhantomData<P>,
+}
+
+// unsafe impl<'a, T: seal::Sealed + Sync + InnerPixel, P: PixelTrait> ImageView
+//     for NdarrayImageContainerTyped<'a, T, ndarray::Ix3, P>
+// where
+//     T: bytemuck::Pod,
+// {
+//     type Pixel = P;
+//     fn width(&self) -> u32 {
+//         self.data.shape()[1] as u32
+//     }
+//     fn height(&self) -> u32 {
+//         self.data.shape()[0] as u32
+//     }
+//     fn iter_rows(&self, start_row: u32) -> impl Iterator<Item = &[Self::Pixel]> {
+//         self.data
+//             .rows()
+//             .into_iter()
+//             .skip(start_row as usize)
+//             .map(|row| {
+//                 row.as_slice()
+//                     .unwrap_or_default()
+//                     .chunks_exact(P::CHANNELS as usize)
+//             })
+//     }
+// }
+
+// impl<'a, T: fast_image_resize::pixels::InnerPixel + seal::Sealed, D: ndarray::Dimension>
+//     fast_image_resize::IntoImageView for NdarrayImageContainer<'a, T, D>
+// {
+//     fn pixel_type(&self) -> Option<PixelType> {
+//         match D::NDIM {
+//             Some(2) => Some(to_pixel_type::<T>(1).expect("Failed to convert to pixel type")),
+//             Some(3) => Some(
+//                 to_pixel_type::<T>(self.data.shape()[2]).expect("Failed to convert to pixel type"),
+//             ),
+//             _ => None,
+//         }
+//     }
+//     fn width(&self) -> u32 {
+//         self.data.shape()[1] as u32
+//     }
+//     fn height(&self) -> u32 {
+//         self.data.shape()[0] as u32
+//     }
+//     fn image_view<P: PixelTrait>(&'a self) -> Option<NdarrayImageContainerTyped<'a, T, D, P>> {
+//         Some(NdarrayImageContainerTyped {
+//             data: self.data.view(),
+//             __marker: std::marker::PhantomData,
+//         })
+//     }
+// }
+
+pub fn to_pixel_type<T: seal::Sealed>(u: usize) -> Result<PixelType> {
+    match (core::any::type_name::<T>(), u) {
+        ("u8", 1) => Ok(PixelType::U8),
+        ("u8", 2) => Ok(PixelType::U8x2),
+        ("u8", 3) => Ok(PixelType::U8x3),
+        ("u8", 4) => Ok(PixelType::U8x4),
+        ("u16", 1) => Ok(PixelType::U16),
+        ("i32", 1) => Ok(PixelType::I32),
+        ("f32", 1) => Ok(PixelType::F32),
+        ("f32", 2) => Ok(PixelType::F32x2),
+        ("f32", 3) => Ok(PixelType::F32x3),
+        ("f32", 4) => Ok(PixelType::F32x4),
+        _ => Err(Report::new(NdFirError).attach_printable("Unsupported pixel type")),
+    }
+}
+
+mod seal {
+    pub trait Sealed {}
+    impl Sealed for u8 {}
+    impl Sealed for u16 {}
+    impl Sealed for i32 {}
+    impl Sealed for f32 {}
+}
+
+impl<S: ndarray::Data<Elem = T>, T: seal::Sealed + bytemuck::Pod, D: ndarray::Dimension>
+    NdAsImage<T, D> for ndarray::ArrayBase<S, D>
+{
+    /// Clones self and makes a new image
+    fn as_image_ref(&self) -> Result<ImageRef> {
+        let shape = self.shape();
+        let rows = *shape
+            .first()
+            .ok_or_else(|| Report::new(NdFirError).attach_printable("Failed to get rows"))?
+            as u32;
+        let cols = *shape.get(1).unwrap_or(&1) as u32;
+        let channels = *shape.get(2).unwrap_or(&1);
+        let data = self
+            .as_slice()
+            .ok_or(NdFirError)
+            .attach_printable("The ndarray is non continuous")?;
+        let data_bytes: &[u8] = bytemuck::cast_slice(data);
+
+        let pixel_type = to_pixel_type::<T>(channels)?;
+        ImageRef::new(cols, rows, data_bytes, pixel_type)
+            .change_context(NdFirError)
+            .attach_printable("Failed to create Image from ndarray")
+    }
+}
+
+impl<S: ndarray::DataMut<Elem = T>, T: seal::Sealed + bytemuck::Pod, D: ndarray::Dimension>
+    NdAsImageMut<T, D> for ndarray::ArrayBase<S, D>
+{
+    fn as_image_ref_mut(&mut self) -> Result<Image<'_>>
+    where
+        S: ndarray::DataMut<Elem = T>,
+    {
+        let shape = self.shape();
+        let rows = *shape
+            .first()
+            .ok_or_else(|| Report::new(NdFirError).attach_printable("Failed to get rows"))?
+            as u32;
+        let cols = *shape.get(1).unwrap_or(&1) as u32;
+        let channels = *shape.get(2).unwrap_or(&1);
+        let data = self
+            .as_slice_mut()
+            .ok_or(NdFirError)
+            .attach_printable("The ndarray is non continuous")?;
+        let data_bytes: &mut [u8] = bytemuck::cast_slice_mut(data);
+
+        let pixel_type = to_pixel_type::<T>(channels)?;
+        Image::from_slice_u8(cols, rows, data_bytes, pixel_type)
+            .change_context(NdFirError)
+            .attach_printable("Failed to create Image from ndarray")
+    }
+}
+
+pub trait NdFir<T, D> {
+    fn fast_resize<'o>(
+        &self,
+        height: usize,
+        width: usize,
+        options: impl Into<Option<&'o ResizeOptions>>,
+    ) -> Result<ndarray::Array<T, D>>;
+}
+
+impl<T: seal::Sealed + bytemuck::Pod + num::Zero, S: ndarray::Data<Elem = T>> NdFir<T, ndarray::Ix3>
+    for ndarray::ArrayBase<S, ndarray::Ix3>
+{
+    fn fast_resize<'o>(
+        &self,
+        height: usize,
+        width: usize,
+        options: impl Into<Option<&'o ResizeOptions>>,
+    ) -> Result<ndarray::Array3<T>> {
+        let source = self.as_image_ref()?;
+        let (_height, _width, channels) = self.dim();
+        let mut dest = ndarray::Array3::<T>::zeros((height, width, channels));
+        let mut dest_image = dest.as_image_ref_mut()?;
+        let mut resizer = fast_image_resize::Resizer::default();
+        resizer
+            .resize(&source, &mut dest_image, options)
+            .change_context(NdFirError)?;
+        Ok(dest)
+    }
+}
+
+impl<T: seal::Sealed + bytemuck::Pod + num::Zero, S: ndarray::Data<Elem = T>> NdFir<T, ndarray::Ix2>
+    for ndarray::ArrayBase<S, ndarray::Ix2>
+{
+    fn fast_resize<'o>(
+        &self,
+        height: usize,
+        width: usize,
+        options: impl Into<Option<&'o ResizeOptions>>,
+    ) -> Result<ndarray::Array<T, ndarray::Ix2>> {
+        let source = self.as_image_ref()?;
+        let (_height, _width) = self.dim();
+        let mut dest = ndarray::Array::<T, ndarray::Ix2>::zeros((height, width));
+        let mut dest_image = dest.as_image_ref_mut()?;
+        let mut resizer = fast_image_resize::Resizer::default();
+        resizer
+            .resize(&source, &mut dest_image, options)
+            .change_context(NdFirError)?;
+        Ok(dest)
+    }
+}
+
+#[test]
+pub fn test_ndarray_fast_image_resize_u8() {
+    let source_fhd = ndarray::Array3::<u8>::ones((1920, 1080, 3));
+    let mut resized_hd = ndarray::Array3::<u8>::zeros((1280, 720, 3));
+    let mut resizer = fast_image_resize::Resizer::default();
+    resizer
+        .resize(
+            &source_fhd.as_image_ref().unwrap(),
+            &mut resized_hd.as_image_ref_mut().unwrap(),
+            None,
+        )
+        .unwrap();
+    assert_eq!(resized_hd.shape(), [1280, 720, 3]);
+}

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src/facedet.rs

@@ -1,12 +1,49 @@
 use crate::errors::*;
 use error_stack::ResultExt;
-use mnn_bridge::ndarray::NdarrayToMnn;
+use mnn_bridge::ndarray::*;
+use nalgebra::Point2;
+use ndarray_resize::NdFir;
 use std::path::Path;
 
+pub struct FaceDetectionConfig {
+    min_sizes: Vec<Point2<u32>>,
+    steps: Vec<u32>,
+    variance: Vec<f32>,
+}
 pub struct FaceDetection {
     handle: mnn_sync::SessionHandle,
 }
 
+pub struct FaceDetectionModelOutput {
+    pub bbox: ndarray::Array3<f32>,
+    pub confidence: ndarray::Array3<f32>,
+    pub landmark: ndarray::Array3<f32>,
+}
+
+impl FaceDetectionModelOutput {
+    pub fn print(&self, limit: usize) {
+        tracing::info!("Detected {} faces", self.bbox.shape()[1]);
+
+        for (bbox, confidence) in self
+            .bbox
+            .clone()
+            .remove_axis(ndarray::Axis(0))
+            .axis_iter(ndarray::Axis(0))
+            .zip(
+                self.confidence
+                    .clone()
+                    .remove_axis(ndarray::Axis(0))
+                    .axis_iter(ndarray::Axis(0))
+                    .map(|c| c[1]),
+            )
+            .filter(|(_, c)| *c > 0.1)
+            .take(limit)
+        {
+            tracing::info!("Face BBox: {:?}, Confidence: {:.2}", bbox, confidence);
+        }
+    }
+}
+
 impl FaceDetection {
     pub fn new(path: impl AsRef<Path>) -> Result<Self> {
         let model = std::fs::read(path)
@@ -33,35 +70,78 @@ impl FaceDetection {
         Ok(FaceDetection { handle })
     }
 
-    pub fn detect_faces(&self, image: ndarray::Array3<u8>) -> Result<ndarray::Array2<u8>> {
+    pub fn detect_faces(&self, image: ndarray::Array3<u8>) -> Result<FaceDetectionModelOutput> {
-        use mnn_bridge::ndarray::MnnToNdarray;
+        use ::tap::*;
         let output = self
             .handle
             .run(move |sr| {
-                let tensor = image
+                let mut resized = image
-                    .as_mnn_tensor()
+                    .fast_resize(640, 640, None)
-                    .ok_or_else(|| Error)
+                    .change_context(mnn::ErrorKind::TensorError)?
+                    .mapv(|f| f as f32)
+                    .tap_mut(|arr| {
+                        arr.axis_iter_mut(ndarray::Axis(2))
+                            .zip([104, 117, 123])
+                            .for_each(|(mut array, pixel)| {
+                                let pixel = pixel as f32;
+                                array.map_inplace(|v| *v -= pixel);
+                            });
+                    })
+                    .permuted_axes((2, 0, 1))
+                    .insert_axis(ndarray::Axis(0))
+                    .as_standard_layout()
+                    .into_owned();
+                let tensor = resized
+                    .as_mnn_tensor_mut()
                     .attach_printable("Failed to convert ndarray to mnn tensor")
                     .change_context(mnn::error::ErrorKind::TensorError)?;
+                tracing::trace!("Image Tensor shape: {:?}", tensor.shape());
                 let (intptr, session) = sr.both_mut();
                 tracing::trace!("Copying input tensor to host");
-                // let input = intptr.input::<u8>(session, "input")?;
+                unsafe {
-                // dbg!(input.shape());
+                    let mut input = intptr.input_unresized::<f32>(session, "input")?;
-                // let mut t = input.create_host_tensor_from_device(false);
+                    tracing::trace!("Input shape: {:?}", input.shape());
-                // tensor.copy_to_host_tensor(&mut t)?;
+                    intptr.resize_tensor_by_nchw::<mnn::View<&mut f32>, _>(
-                //
+                        input.view_mut(),
-                // intptr.run_session(&session)?;
+                        1,
-                // let output = intptr.output::<u8>(&session, "output").unwrap();
+                        3,
-                // let output_tensor = output.create_host_tensor_from_device(true);
+                        640,
-                // let output_array = output_tensor
+                        640,
-                //     .try_as_ndarray()
+                    );
-                //     .change_context(mnn::error::ErrorKind::TensorError)?
+                }
-                //     .to_owned();
+                intptr.resize_session(session);
-                // Ok(output_array)
+                let mut input = intptr.input::<f32>(session, "input")?;
-                Ok(ndarray::Array2::<u8>::zeros((1, 1))) // Placeholder for actual output
+                tracing::trace!("Input shape: {:?}", input.shape());
+                input.copy_from_host_tensor(tensor.view())?;
+
+                tracing::info!("Running face detection session");
+                intptr.run_session(&session)?;
+                let output_tensor = intptr
+                    .output::<f32>(&session, "bbox")?
+                    .create_host_tensor_from_device(true)
+                    .as_ndarray()
+                    .to_owned();
+                tracing::trace!("Output Bbox: \t\t{:?}", output_tensor.shape());
+                let output_confidence = intptr
+                    .output::<f32>(&session, "confidence")?
+                    .create_host_tensor_from_device(true)
+                    .as_ndarray::<ndarray::Ix3>()
+                    .to_owned();
+                tracing::trace!("Output Confidence: \t{:?}", output_confidence.shape());
+                let output_landmark = intptr
+                    .output::<f32>(&session, "landmark")?
+                    .create_host_tensor_from_device(true)
+                    .as_ndarray::<ndarray::Ix3>()
+                    .to_owned();
+                tracing::trace!("Output Landmark: \t{:?}", output_landmark.shape());
+                Ok(FaceDetectionModelOutput {
+                    bbox: output_tensor,
+                    confidence: output_confidence,
+                    landmark: output_landmark,
+                })
             })
             .map_err(|e| e.into_inner())
-            .change_context(Error);
+            .change_context(Error)?;
-        output
+        Ok(output)
     }
 }

src/main.rs

@@ -19,12 +19,15 @@ pub fn main() -> Result<()> {
                 .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()
+            let array = image
+                .into_ndarray()
                 .change_context(errors::Error)
                 .attach_printable("Failed to convert image to ndarray")?;
-            model.detect_faces(array)
+            let output = model
+                .detect_faces(array)
                 .change_context(errors::Error)
                 .attach_printable("Failed to detect faces")?;
+            output.print(20);
         }
         cli::SubCommand::List(list) => {
             println!("List: {:?}", list);