Struct BilinearResizeU8Plan 

pub struct BilinearResizeU8Plan { /* private fields */ }

Reusable source coordinates and fixed-point coefficients for u8 bilinear resize.

Constructing a plan performs all half-pixel coordinate mapping once. Execution never allocates and accepts packed or explicitly strided input/output views.

Implementations

impl BilinearResizeU8Plan

pub fn new( input_width: usize, input_height: usize, output_width: usize, output_height: usize, ) -> Result<BilinearResizeU8Plan, VisionError>

Builds a plan for the named input and output dimensions.

pub const fn input_dimensions(&self) -> (usize, usize)

Returns the planned input dimensions as (width, height).

pub const fn output_dimensions(&self) -> (usize, usize)

Returns the planned output dimensions as (width, height).

pub fn resize<const CHANNELS: usize>( &self, input: ImageView<'_, u8, CHANNELS>, ) -> Result<Image<u8, CHANNELS>, VisionError>

Resizes into a newly allocated image while preserving input metadata.

pub fn resize_into<const CHANNELS: usize>( &self, input: ImageView<'_, u8, CHANNELS>, output: ImageViewMut<'_, u8, CHANNELS>, ) -> Result<(), VisionError>

Resizes into caller-owned storage without allocating.

pub fn resize_rgb_to_gray( &self, input: ImageView<'_, u8, 3>, ) -> Result<Image<u8, 1>, VisionError>

Fuses bilinear RGB resize and BT.601 grayscale conversion into one pass.

The result is bit-exact with this plan’s RGB Self::resize followed by SpatialRust’s Q14 RGB-to-gray conversion, while avoiding the intermediate three-channel image.

pub fn resize_rgb_to_gray_into( &self, input: ImageView<'_, u8, 3>, output: ImageViewMut<'_, u8, 1>, ) -> Result<(), VisionError>

Fuses bilinear RGB resize and BT.601 grayscale conversion into caller-owned storage.

pub fn resize_rgb_to_chw( &self, input: ImageView<'_, u8, 3>, scale: f32, mean: [f32; 3], std: [f32; 3], ) -> Result<PlanarImage<f32, 3>, VisionError>

Fuses bilinear RGB resize, per-channel normalization, and CHW packing.

The result is bit-exact with this plan’s RGB Self::resize followed by SpatialRust’s planar normalization for the same parameters, while avoiding the intermediate resized RGB image.

pub fn resize_rgb_to_chw_into( &self, input: ImageView<'_, u8, 3>, scale: f32, mean: [f32; 3], std: [f32; 3], output: &mut [f32], ) -> Result<(), VisionError>

Fuses bilinear RGB resize, normalization, and CHW packing into a reusable slice.

Trait Implementations

impl Clone for BilinearResizeU8Plan

fn clone(&self) -> BilinearResizeU8Plan

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BilinearResizeU8Plan

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl PartialEq for BilinearResizeU8Plan

fn eq(&self, other: &BilinearResizeU8Plan) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for BilinearResizeU8Plan

impl StructuralPartialEq for BilinearResizeU8Plan