第四大类：对彩色图像的一些处理
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CogColorExtractorTool：you use to extract pixels from a color image in order to create a grey-scale image of light and dark pixels based on the reference colors you specify. The tool also generates a color image that can be used as a diagnostic tool to verify that you are extracting the pixels of a desired color, or set of colors. The following figure shows the Color Extractor tool edit control。
CogColorMatchTool：
you use to examine an area of color in an image and generate a set of match scores between the examined area and a table of reference colors. The Color Match tool can be used to determine which color is currently present within an area of a run-time image. The following figure shows the Color Match tool edit control。
CogColorSegmenterTool：you use to separate pixels from a color image into a grey scale image of light and dark pixels, where light pixels represent color pixels that fall within a desirable range of color and dark pixels represent color pixels that fall outside any desirable range of color. The grey scale image that a Color Segmenter tool generates represents just the portion(s) of the input image having color values that you want to analyze further. The following figure shows the Color Segmenter tool edit control。
CogCompositeColorMatchTool：you use to examine the color content of an area in an image and generate a set of match scores between the examined area and a table of reference entries, where each entry consists of a combination of color combined with a sample of each possible image the vision application might encounter. Unlike the Color Match tool, which calculates an average for the color pixels within a region, you can use a Composite Color Match tool to distinguish between patterns of color or textures of color. The following figure shows the Composite Color Match tool edit control。
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