pub fn letterbox<T: PixelComponent, const CHANNELS: usize>(
input: ImageView<'_, T, CHANNELS>,
output_width: usize,
output_height: usize,
interpolation: Interpolation,
value: [T; CHANNELS],
) -> VisionResult<(Image<T, CHANNELS>, LetterboxTransform)>Expand description
Aspect-preserving resize followed by centered constant padding.