gray_dilationgray_dilationgray_dilationGrayDilationGrayDilation (Operator)

Name

gray_dilationgray_dilationgray_dilationGrayDilationGrayDilation — Perform a gray value dilation on an image.

Signature

gray_dilation(Image, SE : ImageDilation : : )

gray_dilationgray_dilationgray_dilationGrayDilationGrayDilation applies a gray value dilation to the input image ImageImageImageImageimage with the structuring element SESESESESE. The image type of the structuring element SESESESESE must match the image type of the input image ImageImageImageImageimage. The gray value dilation of an image i with a structuring element s at the pixel position x is defined as:

  (i+s)(x) =  max { f(x-z)+s(z) | z in S }

Here, S is the domain of the structuring element s (see read_gray_seread_gray_seread_gray_seReadGraySeReadGraySe).

The gray value dilation is particularly fast for flat structuring elements, i.e., structuring elements with a constant gray level within their domain.

Parallelization

Multithreading type: reentrant (runs in parallel with non-exclusive operators).
Multithreading scope: global (may be called from any thread).
Automatically parallelized on tuple level.
Automatically parallelized on internal data level.

Parameters

ImageImageImageImageimage (input_object) (multichannel-)image(-array) → object (byte / uint2 / real)

Input image.

SESESESESE (input_object) singlechannelimage → object (byte / uint2 / real)

Structuring element.

ImageDilationImageDilationImageDilationImageDilationimageDilation (output_object) (multichannel-)image(-array) → object (byte / uint2 / real)

Gray-dilated image.

Result

gray_dilationgray_dilationgray_dilationGrayDilationGrayDilation returns 2 (H_MSG_TRUE) if the structuring element is not the empty region. Otherwise, an exception is raised.