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C # class batmapCodePudding user response:
Third-party plug-in![](https://img.codepudding.com/202010/147760160115001.gif)
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PS, bibulous look at the gray valueCodePudding user response:
Screenshots, thrown into the drawing tools, can see the colorCodePudding user response:
C # Emgucv class library is suitable for processing imageThis is the method of use: emgucv
https://www.cnblogs.com/motao9527/p/10220445.html
Gray histogram threshold value is calculated using the extracting grey value
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(int) (color. R * 0.3 + color. G * 0.59 + color in B * 0.11);The RGB respectively is red, green, and blue components
There is a simple Color. GetBrightness
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![](https://img.codepudding.com/202010/147760160115002.gif)
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https://www.cnblogs.com/DuanLaoYe/p/5386146.html