参考资料：
http://hahack.com/codes/opencv-and-mvc/
http://blog.csdn.net/yzhang6_10/article/details/50808460
http://wiki.opencv.org.cn/index.php/OpenCV_%E7%BC%96%E7%A0%81%E6%A0%B7%E5%BC%8F%E6%8C%87%E5%8D%97
