Function `interpolate_bilinear`

fn interpolate_bilinear<P: Pixel, impl GenericImageView<Pixel = P>: GenericImageView<Pixel = P>>(img: &impl GenericImageView<Pixel = P>, x: f32, y: f32) -> Option<P>

Linearly sample from an image using coordinates in [0, w-1] and [0, h-1].