gray_opening_rectgray_opening_rectGrayOpeningRectGrayOpeningRectgray_opening_rect (算子)

名称

gray_opening_rectgray_opening_rectGrayOpeningRectGrayOpeningRectgray_opening_rect — 使用矩形掩模执行灰度值开。

签名

gray_opening_rect(Image : ImageOpening : MaskHeight, MaskWidth : )

描述

gray_opening_rectgray_opening_rectGrayOpeningRectGrayOpeningRectGrayOpeningRectgray_opening_rect applies a gray value opening to the input image ImageImageImageImageimageimage with a rectangular mask of size (MaskHeightMaskHeightMaskHeightMaskHeightmaskHeightmask_height, MaskWidthMaskWidthMaskWidthMaskWidthmaskWidthmask_width). The resulting image is returned in ImageOpeningImageOpeningImageOpeningImageOpeningimageOpeningimage_opening. If the parameters MaskHeightMaskHeightMaskHeightMaskHeightmaskHeightmask_height or MaskWidthMaskWidthMaskWidthMaskWidthmaskWidthmask_width 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.e., an erosion of the image with s followed by a dilation with s (see gray_erosion_rectgray_erosion_rectGrayErosionRectGrayErosionRectGrayErosionRectgray_erosion_rect and gray_dilation_rectgray_dilation_rectGrayDilationRectGrayDilationRectGrayDilationRectgray_dilation_rect).

注意

请注意，若使用域缩减后的图像作为输入，滤波器算子可能会返回意外结果。请参阅滤波器一章

执行信息

支持 OpenCL 计算设备。
多线程类型：可重入（与非独占算子并行运行）。
多线程作用域：全局（可从任何线程调用）。
在元组级别上自动并行化。
在通道级别上自动并行化。
在域级别上自动并行化。

参数

ImageImageImageImageimageimage (输入对象) (multichannel-)image(-array) → object (byte / direction / cyclic / uint2 / int2 / int4 / real)

输入图像。

ImageOpeningImageOpeningImageOpeningImageOpeningimageOpeningimage_opening (输出对象) (multichannel-)image(-array) → object (byte / direction / cyclic / uint2 / int2 / int4 / real)

Gray-opened image.

MaskHeightMaskHeightMaskHeightMaskHeightmaskHeightmask_height (输入控制) extent.y → (integer)

Height of the filter mask.

默认值： 11

建议值： 3, 5, 7, 9, 11, 13, 15

值范围： 3 ≤ MaskHeight MaskHeight MaskHeight MaskHeight maskHeight mask_height ≤ 511

最小增量： 2

建议增量： 2

限制： odd(MaskHeight) && MaskHeight < height(Image) * 2

MaskWidthMaskWidthMaskWidthMaskWidthmaskWidthmask_width (输入控制) extent.x → (integer)

Width of the filter mask.

默认值： 11

建议值： 3, 5, 7, 9, 11, 13, 15

值范围： 3 ≤ MaskWidth MaskWidth MaskWidth MaskWidth maskWidth mask_width ≤ 511

最小增量： 2

建议增量： 2

限制： odd(MaskWidth) && MaskWidth < width(Image) * 2

结果

gray_opening_rectgray_opening_rectGrayOpeningRectGrayOpeningRectGrayOpeningRectgray_opening_rect 在所有参数正确时返回 2 ( H_MSG_TRUE )。如果输入为空则可设置行为通过 set_system('no_object_result',<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>)。如有必要，则抛出异常。

替代

gray_openinggray_openingGrayOpeningGrayOpeningGrayOpeninggray_opening, gray_opening_shapegray_opening_shapeGrayOpeningShapeGrayOpeningShapeGrayOpeningShapegray_opening_shape

另见

opening_rectangle1opening_rectangle1OpeningRectangle1OpeningRectangle1OpeningRectangle1opening_rectangle1, gray_dilation_rectgray_dilation_rectGrayDilationRectGrayDilationRectGrayDilationRectgray_dilation_rect, gray_erosion_rectgray_erosion_rectGrayErosionRectGrayErosionRectGrayErosionRectgray_erosion_rect

模块

基础

算子