pub fn sobel_l1_magnitude_u8(
input: ImageView<'_, u8, 1>,
border: BorderMode<u8, 1>,
) -> VisionResult<Image<i16, 1>>Expand description
Computes exact 3×3 Sobel L1 magnitude (|Gx| + |Gy|) for grayscale u8.
The non-negative signed i16 output ranges from 0 through 2040. Fusing the
paired derivatives and magnitude avoids materializing two gradient images.