Perform a gray value bottom hat transformation on an image.
gray_bothat applies a gray value bottom hat transformation to the input image Image with the structuring element SE. The gray value bottom hat transformation of an image i with a structuring element s is defined as
bothat(i,s) = (i +- s) - i ,i.e., the difference of the closing of the image with s and the image (see gray_closing). For the generation of structuring elements, see read_gray_se.
|
Image (input_object) |
image(-array) -> object : byte / real |
| Input image. | |
|
SE (input_object) |
image -> object : byte |
| Structuring element. | |
|
ImageBotHat (output_object) |
image(-array) -> object : byte / real |
| Bottom hat image. | |
gray_bothat returns 2 (H_MSG_TRUE) if the structuring element is not the empty region. Otherwise, an exception is raised.
gray_bothat is reentrant and automatically parallelized (on tuple level).
gray_tophat, top_hat, gray_erosion_rect, sub_image
Image filters
