Function skeletonize::edge_detection::sobel4 [−][src]
pub fn sobel4<F: ForegroundColor>(
img: &DynamicImage,
threshold: Option<f32>
) -> Result<DynamicImage, SkeletonizeError>
Detect edges in an image using four Sobel gradient operators:
SOBEL_NORTH, SOBEL_SOUTH,
SOBEL_EAST, and SOBEL_WEST.
threshold is an optional parameter between 0.0 and 1.0 which is used to
binarize the image. Pixels below that Luma threshold will be converted
to the background color.