gray_tophatgray_tophatGrayTophatGrayTophatgray_tophat (算子)

名称

gray_tophatgray_tophatGrayTophatGrayTophatgray_tophat — 对图像执行灰度值顶帽变换。

签名

描述

gray_tophatgray_tophatGrayTophatGrayTophatGrayTophatgray_tophat applies a gray value top 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 top hat transformation of an image i with a structuring element s is defined as i.e., the difference of the image and its opening with s (see gray_openinggray_openingGrayOpeningGrayOpeningGrayOpeninggray_opening). For the generation of structuring elements, see read_gray_seread_gray_seReadGraySeReadGraySeReadGraySeread_gray_se。

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

执行信息

• 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。
• 在内部数据级别上自动并行化。

参数

结果

gray_tophatgray_tophatGrayTophatGrayTophatGrayTophatgray_tophat returns 2 ( H_MSG_TRUE) if the structuring element is not the empty region.否则，将抛出异常。

可能的前趋

read_gray_seread_gray_seReadGraySeReadGraySeReadGraySeread_gray_se, gen_disc_segen_disc_seGenDiscSeGenDiscSeGenDiscSegen_disc_se, read_imageread_imageReadImageReadImageReadImageread_image

可能的后继

thresholdthresholdThresholdThresholdThresholdthreshold

替代

gray_openinggray_openingGrayOpeningGrayOpeningGrayOpeninggray_opening

另见

gray_bothatgray_bothatGrayBothatGrayBothatGrayBothatgray_bothat, top_hattop_hatTopHatTopHatTopHattop_hat, gray_erosion_rectgray_erosion_rectGrayErosionRectGrayErosionRectGrayErosionRectgray_erosion_rect, sub_imagesub_imageSubImageSubImageSubImagesub_image

模块

基础