Operators |
gray_opening — Perform a gray value opening on an image.
gray_opening(Image, SE : ImageOpening : : )
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
i -+ s = (i - s) + transpose(s) ,
i.e., an erosion of the image with s followed by a dilation with the transposed structuring element (see gray_erosion and gray_dilation). For the generation of structuring elements, see read_gray_se.
The gray value opening is particularly fast for flat structuring elements, i.e., structuring elements with a constant gray level within their domain.
Input image.
Structuring element.
Gray-opened image.
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
Foundation
Operators |