说明：  可根据像素三原色的数值，识别图片中的不同颜色的区域，并计算特定颜色范围的面积。可用于计算无损检测C扫结果中的损伤面积。
(According to the values of the three primary colors of the pixel, the areas of different colors in the picture can be identified, and the area of a specific color range can be calculated. It can be used to calculate the damage area in the C-scan result of non-destructive testing.)