程序运行时，先根据弹出对话框的提示值修改主程序开始处的摄像头图像高和宽。重新编译后运行程序即可。如果如果弹出对话框的提示值与程序中默认的设置值相同，则不用修改。-Program runs, the first pop-up dialog box in accordance with amendments to the main program prompts the beginning of the value of the camera image height and width. Recompiled to run after the procedures. If pop-up dialog box if the value of tips and procedures in the same default settings, it need not be amended.