opencv調用攝像頭截圖保存圖片

int process(VideoCapture& capture)html {     int n = 0;     char filename[200];     string window_name = "video | q or esc to quit";     cout << " \n\t按下【Space】空格鍵能夠截圖，圖片將存放在工程目錄下。\n\n\t【Esc】和【q】鍵 - 退

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