实现图片特征区域（先选定）然后识别出相同颜色区域的功能。比如指定黄色的区域是背景区域，程序将图片中所有同样颜色背景区域显示出来。-Achieve Pictures feature region (first choice) and then identify the functional areas of the same color. For example, the area is designated yellow background region, the program will i