Function grayscale

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

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