Function imageproc::suppress::suppress_non_maximum

pub fn suppress_non_maximum<I, C>(
    image: &I, 
    radius: u32
) -> ImageBuffer<Luma<C>, Vec<C>> where
    I: GenericImage<Pixel = Luma<C>>,
    C: Primitive + Ord + 'static, 

Returned image has zeroes for all inputs pixels which do not have the greatest intensity in the (2 * radius + 1) square block centred on them. Ties are resolved lexicographically.