Type Definition GrayImage
image
type GrayImage = ImageBuffer<Luma<u8>, Vec<u8>>;
Sendable grayscale image buffer
impl GrayImage
pub fn expand_palette( self, palette: &[(u8, u8, u8)], transparent_idx: Option<u8>) -> RgbaImage
Expands a color palette by re-using the existing buffer. Assumes 8 bit per pixel. Uses an optionally transparent index to adjust it's alpha value accordingly.