#denoising #denoise #openimagedenoise

sys oidn

A wrapper for the Intel OpenImageDenoise image denoising library

12 stable releases

2.2.3 Apr 21, 2024
1.4.3 Nov 19, 2022
1.4.2 Feb 15, 2022
1.4.1 May 22, 2021
0.1.0 Feb 9, 2019

#115 in Images

37 downloads per month
Used in 2 crates

MIT license

772 lines


Crates.io CI

Rust bindings to Intel’s Open Image Denoise library.


Rust docs can be found here.

Open Image Denoise documentation can be found here.


The crate provides a lightweight wrapper over the Open Image Denoise library, along with raw C bindings exposed under oidn::sys. Below is an example of using the RT filter from Open Image Denoise (the RayTracing filter) to denoise an image.

extern crate oidn;

fn main() {
    // Load scene, render image, etc.

    let input_img: Vec<f32> = // A float3 RGB image produced by your renderer
    let mut filter_output = vec![0.0f32; input_img.len()];

    let device = oidn::Device::new();
        // Optionally add float3 normal and albedo buffers as well
        .image_dimensions(input.width() as usize, input.height() as usize);
        .filter(&input_img[..], &mut filter_output[..])
        .expect("Filter config error!");

    if let Err(e) = device.get_error() {
        println!("Error denosing image: {}", e.1);

    // Save out or display filter_output image

The simple example loads a JPG, denoises it, and saves the output image to a JPG. The denoise_exr example loads an HDR color EXR file, denoises it and saves the tonemapped result out to a JPG. The denoise_exr app can also take albedo and normal data through additional EXR files.


~19K SLoC