Function fast_blur
#[must_use]
pub fn fast_blur<P: Pixel>(input_buffer: &ImageBuffer<P, Vec<P::Subpixel>>, sigma: f32) -> ImageBuffer<P, Vec<P::Subpixel>>Approximation of Gaussian blur.
Arguments
image_buffer- source image.sigma- value controls image flattening level.
This method assumes alpha pre-multiplication for images that contain non-constant alpha.
This method typically assumes that the input is scene-linear light. If it is not, color distortion may occur.
Source: Kovesi, P.: Fast Almost-Gaussian Filtering The Australian Pattern Recognition Society Conference: DICTA 2010. December 2010. Sydney.