此程序主要是检测黄色区域（用于人脸识别）

所用摄像头为USB320X240RGB的

原理：

先利用颜色找出符合条件的大面积黄

再利用模板闭运算补充连通与

再利用XY轴上连同域的寻找

标出人脸-The procedure is to detect the yellow area (for recognition) camera for USB320X240RGB used the principle: first, to identify qualified by the color yellow and then use a large area of the template to add connectivity and re-closing operation axis together with the domain using the search XY Face marked