A fast linear-time gaussian blur based on http://blog.ivank.net/fastest-gaussian-blur.html.
This implementation was based on https://github.com/fschutt/fastblur.
These functions in-place blur a given slice of (presumably) image data, with any number of channels and the given blur radius. Performance is roughly linear time, and uses a single allocation for a backing store, of the same size as the input slice.
Blur an RgbImage
rust
fn blur_fast(rgb_image: &mut image::RgbImage, radius: f32) -> Result<(), blurslice::SliceSizeError> {
let width = rgb_image.width() as usize;
let height = rgb_image.width() as usize;
let samples = rgb_image.as_flat_samples_mut();
blurslice::gaussian_blur_bytes::<3>(samples.samples, width, height, radius)
}