gray_bothatgray_bothatGrayBothatgray_bothatGrayBothatGrayBothat (Operator)

Name

gray_bothatgray_bothatGrayBothatgray_bothatGrayBothatGrayBothat — Perform a gray value bottom hat transformation on an image.

Signature

gray_bothat(Image, SE : ImageBotHat : : )

gray_bothatgray_bothatGrayBothatgray_bothatGrayBothatGrayBothat applies a gray value bottom hat transformation to the input image ImageImageImageImageImageimage with the structuring element SESESESESESE. The image type of the structuring element SESESESESESE must match the image type of the input image ImageImageImageImageImageimage. 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_closinggray_closingGrayClosinggray_closingGrayClosingGrayClosing). For the generation of structuring elements, see read_gray_seread_gray_seReadGraySeread_gray_seReadGraySeReadGraySe.

The gray value erosion 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 channel level.
Automatically parallelized on internal data level.

Parameters

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

Input image.

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

Structuring element.

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

Bottom hat image.

Result

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