最近用opencv2.2以上版本，尝试采用C++风格来编程。函数
发现最简单的 imread, imshow 都出错了。ui
最后发现问题。debug
release版的程序必须调用release版的opencv lib，3d
opencv_core242.libit
opencv_legacy242.libopencv
opencv_highgui242.libclass
opencv_features2d242.libgui
opencv_flann242.lib
opencv_calib3d242.lib
opencv_imgproc242.lib
opencv_video242.lib
debug版的程序必须调用debug版的opencv lib，
opencv_core242d.lib
opencv_legacy242d.lib
opencv_highgui242d.lib
opencv_features2d242d.lib
opencv_flann242d.lib
opencv_calib3d242d.lib
opencv_imgproc242d.lib
opencv_video242d.lib