devela::_dep::image::imageops

Function grayscale_alpha

pub fn grayscale_alpha<I>(
    image: &I,
) -> ImageBuffer<LumaA<<<I as GenericImageView>::Pixel as Pixel>::Subpixel>, Vec<<<I as GenericImageView>::Pixel as Pixel>::Subpixel>>
where
    I: GenericImageView,
Available on crate feature dep_image only.
Expand description

Convert the supplied image to grayscale. Alpha channel is preserved.