gray_opening_rectgray_opening_rectgray_opening_rectGrayOpeningRectGrayOpeningRect (Operator)

Name

gray_opening_rectgray_opening_rectgray_opening_rectGrayOpeningRectGrayOpeningRect — Perform a gray value opening with a rectangular mask.

Signature

Description

gray_opening_rectgray_opening_rectgray_opening_rectGrayOpeningRectGrayOpeningRect applies a gray value opening to the input image ImageImageImageImageimage with a rectangular mask of size (MaskHeightMaskHeightMaskHeightMaskHeightmaskHeight, MaskWidthMaskWidthMaskWidthMaskWidthmaskWidth). The resulting image is returned in ImageOpeningImageOpeningImageOpeningImageOpeningimageOpening. If the parameters MaskHeightMaskHeightMaskHeightMaskHeightmaskHeight or MaskWidthMaskWidthMaskWidthMaskWidthmaskWidth are even, they are changed to the next larger odd value. At the border of the image the gray values are mirrored.

The gray value opening of an image i with a rectangular structuring element s is defined as

  i -+ s = (i - s) + s ,

i.e., an erosion of the image with s followed by a dilation with s (see gray_erosion_rectgray_erosion_rectgray_erosion_rectGrayErosionRectGrayErosionRect and gray_dilation_rectgray_dilation_rectgray_dilation_rectGrayDilationRectGrayDilationRect).

Parallelization

• Supports OpenCL compute devices.
• 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 domain level.

Parameters

Result

gray_opening_rectgray_opening_rectgray_opening_rectGrayOpeningRectGrayOpeningRect returns 2 (H_MSG_TRUE) if all parameters are correct. If the input is empty the behavior can be set via set_system('no_object_result',<Result>)set_system("no_object_result",<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>). If necessary, an exception is raised.

Alternatives

gray_openinggray_openinggray_openingGrayOpeningGrayOpening, gray_opening_shapegray_opening_shapegray_opening_shapeGrayOpeningShapeGrayOpeningShape

See also

opening_rectangle1opening_rectangle1opening_rectangle1OpeningRectangle1OpeningRectangle1, gray_dilation_rectgray_dilation_rectgray_dilation_rectGrayDilationRectGrayDilationRect, gray_erosion_rectgray_erosion_rectgray_erosion_rectGrayErosionRectGrayErosionRect

Module

Foundation