Perform a gray value top hat transformation on an image.
::gray_tophat applies a gray value top hat transformation to the input image Image with the structuring element SE. The gray value top hat transformation of an image i with a structuring element s is defined as
tophat(i,s) = i - (i -+ s) ,i.e., the difference of the image and its opening with s (see ::gray_opening). For the generation of structuring elements, see ::read_gray_se.
|
Image (input_object) |
image(-array) -> Hobject: HImage(Array) ( byte ) |
| Input image. | |
|
SE (input_object) |
image -> Hobject: HImage ( byte ) |
| Structuring element. | |
|
ImageTopHat (output_object) |
image(-array) -> Hobject * : HImage(Array) ( byte ) |
| Top hat image. | |
::gray_tophat returns H_MSG_TRUE if the structuring element is not the empty region. Otherwise, an exception is raised.
::gray_bothat, ::top_hat, ::gray_erosion_rect, ::sub_image
Image filters
