HOG Descriptor Reference

Computes Histogram of Oriented Gradients (HOG) descriptors for image regions.

::: note This module is under active development. API signatures may change between versions. :::

HogDescriptor

pub struct HogDescriptor {
    cell_size: usize,
    block_size: usize,
    nbins: usize,
}

impl HogDescriptor {
    pub fn new(cell_size: usize, block_size: usize, nbins: usize) -> Self;
    pub fn compute<B: Backend>(&self, image: &Image<B>) -> Result<Tensor<B, 1>>;
}

Parameters

Parameter	Type	Description
cell_size	usize	Size of each cell in pixels (e.g., 8).
block_size	usize	Number of cells per block (e.g., 2 for 2×2).
nbins	usize	Number of orientation bins (e.g., 9).

Example

use iris::prelude::*;
use burn::backend::wgpu::Wgpu;

type Backend = Wgpu;
let device = Default::default();

let img = Image::<Backend>::open("person.png", &device)?;
let hog = HogDescriptor::new(8, 2, 9);
let descriptor = hog.compute(&img)?;
println!("HOG descriptor shape: {:?}", descriptor.dims());