gray_opening — Perform a gray value opening on an image.
gray_opening applies a gray value opening to the input image Image with the structuring element SE. The image type of the structuring element SE must match the image type of the input image Image. The gray value opening of an image i with a structuring element s is defined as
The gray value opening is particularly fast for flat structuring elements, i.e., structuring elements with a constant gray level within their domain.
gray_opening returns 2 (H_MSG_TRUE) if the structuring element is not the empty region. Otherwise, an exception is raised.
read_gray_se, gen_disc_se, read_image
dual_rank, gray_opening_rect, gray_opening_shape
opening, gray_dilation, gray_erosion