OpenCV 颜色空间转换参数CV_BGR2GRAY改变

OpenCV的颜色空间转换函数：

 

C++: void cvtColor(InputArray src, OutputArray dst, int code, int dstCn=0 )

 

参数dstCn原来一直沿用CV_BGR2GRAY, CV_RGB2GRAY, CV_GRAY2BGR, CV_GRAY2RGB等格式，但最新几个版本的OpenCV已改为COLOR_BGR2GRAY类似形式，今天才看源代码imgproc.hpp才发现，但官方文档还没修改，如下图，如果程序中使用较新的版本OpenCV，采用CV_BGR2GRAY可能会一直出错。

 

 

 

新的OpenCV中imgproc.hpp的定义如下：

enum
{
    COLOR_BGR2BGRA =,
    COLOR_RGB2RGBA =COLOR_BGR2BGRA,

    COLOR_BGRA2BGR =,
    COLOR_RGBA2RGB =COLOR_BGRA2BGR,

    COLOR_BGR2RGBA =,
    COLOR_RGB2BGRA =COLOR_BGR2RGBA,

    COLOR_RGBA2BGR =,
    COLOR_BGRA2RGB =COLOR_RGBA2BGR,

    COLOR_BGR2RGB =,
    COLOR_RGB2BGR =COLOR_BGR2RGB,

    COLOR_BGRA2RGBA =,
    COLOR_RGBA2BGRA =COLOR_BGRA2RGBA,

    COLOR_BGR2GRAY =,
    COLOR_RGB2GRAY =,
    COLOR_GRAY2BGR =,
    COLOR_GRAY2RGB =COLOR_GRAY2BGR,
    COLOR_GRAY2BGRA =,
    COLOR_GRAY2RGBA =COLOR_GRAY2BGRA,
    COLOR_BGRA2GRAY =,
    COLOR_RGBA2GRAY =,

    COLOR_BGR2BGR565 =,
    COLOR_RGB2BGR565 =,
    COLOR_BGR5652BGR =,
    COLOR_BGR5652RGB =,
    COLOR_BGRA2BGR565 =,
    COLOR_RGBA2BGR565 =,
    COLOR_BGR5652BGRA =,
    COLOR_BGR5652RGBA =,

    COLOR_GRAY2BGR565 =,
    COLOR_BGR5652GRAY =,

    COLOR_BGR2BGR555 =,
    COLOR_RGB2BGR555 =,
    COLOR_BGR5552BGR =,
    COLOR_BGR5552RGB =,
    COLOR_BGRA2BGR555 =,
    COLOR_RGBA2BGR555 =,
    COLOR_BGR5552BGRA =,
    COLOR_BGR5552RGBA =,

    COLOR_GRAY2BGR555 =,
    COLOR_BGR5552GRAY =,

    COLOR_BGR2XYZ =,
    COLOR_RGB2XYZ =,
    COLOR_XYZ2BGR =,
    COLOR_XYZ2RGB =,

    COLOR_BGR2YCrCb =,
    COLOR_RGB2YCrCb =,
    COLOR_YCrCb2BGR =,
    COLOR_YCrCb2RGB =,

    COLOR_BGR2HSV =,
    COLOR_RGB2HSV =,

    COLOR_BGR2Lab =,
    COLOR_RGB2Lab =,

    COLOR_BayerBG2BGR =,
    COLOR_BayerGB2BGR =,
    COLOR_BayerRG2BGR =,
    COLOR_BayerGR2BGR =,

    COLOR_BayerBG2RGB =COLOR_BayerRG2BGR,
    COLOR_BayerGB2RGB =COLOR_BayerGR2BGR,
    COLOR_BayerRG2RGB =COLOR_BayerBG2BGR,
    COLOR_BayerGR2RGB =COLOR_BayerGB2BGR,

    COLOR_BGR2Luv =,
    COLOR_RGB2Luv =,
    COLOR_BGR2HLS =,
    COLOR_RGB2HLS =,

    COLOR_HSV2BGR =,
    COLOR_HSV2RGB =,

    COLOR_Lab2BGR =,
    COLOR_Lab2RGB =,
    COLOR_Luv2BGR =,
    COLOR_Luv2RGB =,
    COLOR_HLS2BGR =,
    COLOR_HLS2RGB =,

    COLOR_BayerBG2BGR_VNG =,
    COLOR_BayerGB2BGR_VNG =,
    COLOR_BayerRG2BGR_VNG =,
    COLOR_BayerGR2BGR_VNG =,

    COLOR_BayerBG2RGB_VNG =COLOR_BayerRG2BGR_VNG,
    COLOR_BayerGB2RGB_VNG =COLOR_BayerGR2BGR_VNG,
    COLOR_BayerRG2RGB_VNG =COLOR_BayerBG2BGR_VNG,
    COLOR_BayerGR2RGB_VNG =COLOR_BayerGB2BGR_VNG,

    COLOR_BGR2HSV_FULL = ,
    COLOR_RGB2HSV_FULL = ,
    COLOR_BGR2HLS_FULL = ,
    COLOR_RGB2HLS_FULL = ,

    COLOR_HSV2BGR_FULL = ,
    COLOR_HSV2RGB_FULL = ,
    COLOR_HLS2BGR_FULL = ,
    COLOR_HLS2RGB_FULL = ,

    COLOR_LBGR2Lab = ,
    COLOR_LRGB2Lab = ,
    COLOR_LBGR2Luv = ,
    COLOR_LRGB2Luv = ,

    COLOR_Lab2LBGR = ,
    COLOR_Lab2LRGB = ,
    COLOR_Luv2LBGR = ,
    COLOR_Luv2LRGB = ,

    COLOR_BGR2YUV = ,
    COLOR_RGB2YUV = ,
    COLOR_YUV2BGR = ,
    COLOR_YUV2RGB = ,

    COLOR_BayerBG2GRAY = ,
    COLOR_BayerGB2GRAY = ,
    COLOR_BayerRG2GRAY = ,
    COLOR_BayerGR2GRAY = ,

    //YUV 4:2:0 formats family
    COLOR_YUV2RGB_NV12 = ,
    COLOR_YUV2BGR_NV12 = ,
    COLOR_YUV2RGB_NV21 = ,
    COLOR_YUV2BGR_NV21 = ,
    COLOR_YUV420sp2RGB = COLOR_YUV2RGB_NV21,
    COLOR_YUV420sp2BGR = COLOR_YUV2BGR_NV21,

    COLOR_YUV2RGBA_NV12 = ,
    COLOR_YUV2BGRA_NV12 = ,
    COLOR_YUV2RGBA_NV21 = ,
    COLOR_YUV2BGRA_NV21 = ,
    COLOR_YUV420sp2RGBA = COLOR_YUV2RGBA_NV21,
    COLOR_YUV420sp2BGRA = COLOR_YUV2BGRA_NV21,

    COLOR_YUV2RGB_YV12 = ,
    COLOR_YUV2BGR_YV12 = ,
    COLOR_YUV2RGB_IYUV = ,
    COLOR_YUV2BGR_IYUV = ,
    COLOR_YUV2RGB_I420 = COLOR_YUV2RGB_IYUV,
    COLOR_YUV2BGR_I420 = COLOR_YUV2BGR_IYUV,
    COLOR_YUV420p2RGB = COLOR_YUV2RGB_YV12,
    COLOR_YUV420p2BGR = COLOR_YUV2BGR_YV12,

    COLOR_YUV2RGBA_YV12 = ,
    COLOR_YUV2BGRA_YV12 = ,
    COLOR_YUV2RGBA_IYUV = ,
    COLOR_YUV2BGRA_IYUV = ,
    COLOR_YUV2RGBA_I420 = COLOR_YUV2RGBA_IYUV,
    COLOR_YUV2BGRA_I420 = COLOR_YUV2BGRA_IYUV,
    COLOR_YUV420p2RGBA = COLOR_YUV2RGBA_YV12,
    COLOR_YUV420p2BGRA = COLOR_YUV2BGRA_YV12,

    COLOR_YUV2GRAY_420 = ,
    COLOR_YUV2GRAY_NV21 = COLOR_YUV2GRAY_420,
    COLOR_YUV2GRAY_NV12 = COLOR_YUV2GRAY_420,
    COLOR_YUV2GRAY_YV12 = COLOR_YUV2GRAY_420,
    COLOR_YUV2GRAY_IYUV = COLOR_YUV2GRAY_420,
    COLOR_YUV2GRAY_I420 = COLOR_YUV2GRAY_420,
    COLOR_YUV420sp2GRAY = COLOR_YUV2GRAY_420,
    COLOR_YUV420p2GRAY = COLOR_YUV2GRAY_420,

    //YUV 4:2:2 formats family
    COLOR_YUV2RGB_UYVY = ,
    COLOR_YUV2BGR_UYVY = ,
    //COLOR_YUV2RGB_VYUY = 109,
    //COLOR_YUV2BGR_VYUY = 110,
    COLOR_YUV2RGB_Y422 = COLOR_YUV2RGB_UYVY,
    COLOR_YUV2BGR_Y422 = COLOR_YUV2BGR_UYVY,
    COLOR_YUV2RGB_UYNV = COLOR_YUV2RGB_UYVY,
    COLOR_YUV2BGR_UYNV = COLOR_YUV2BGR_UYVY,

    COLOR_YUV2RGBA_UYVY = ,
    COLOR_YUV2BGRA_UYVY = ,
    //COLOR_YUV2RGBA_VYUY = 113,
    //COLOR_YUV2BGRA_VYUY = 114,
    COLOR_YUV2RGBA_Y422 = COLOR_YUV2RGBA_UYVY,
    COLOR_YUV2BGRA_Y422 = COLOR_YUV2BGRA_UYVY,
    COLOR_YUV2RGBA_UYNV = COLOR_YUV2RGBA_UYVY,
    COLOR_YUV2BGRA_UYNV = COLOR_YUV2BGRA_UYVY,

    COLOR_YUV2RGB_YUY2 = ,
    COLOR_YUV2BGR_YUY2 = ,
    COLOR_YUV2RGB_YVYU = ,
    COLOR_YUV2BGR_YVYU = ,
    COLOR_YUV2RGB_YUYV = COLOR_YUV2RGB_YUY2,
    COLOR_YUV2BGR_YUYV = COLOR_YUV2BGR_YUY2,
    COLOR_YUV2RGB_YUNV = COLOR_YUV2RGB_YUY2,
    COLOR_YUV2BGR_YUNV = COLOR_YUV2BGR_YUY2,

    COLOR_YUV2RGBA_YUY2 = ,
    COLOR_YUV2BGRA_YUY2 = ,
    COLOR_YUV2RGBA_YVYU = ,
    COLOR_YUV2BGRA_YVYU = ,
    COLOR_YUV2RGBA_YUYV = COLOR_YUV2RGBA_YUY2,
    COLOR_YUV2BGRA_YUYV = COLOR_YUV2BGRA_YUY2,
    COLOR_YUV2RGBA_YUNV = COLOR_YUV2RGBA_YUY2,
    COLOR_YUV2BGRA_YUNV = COLOR_YUV2BGRA_YUY2,

    COLOR_YUV2GRAY_UYVY = ,
    COLOR_YUV2GRAY_YUY2 = ,
    //COLOR_YUV2GRAY_VYUY = COLOR_YUV2GRAY_UYVY,
    COLOR_YUV2GRAY_Y422 = COLOR_YUV2GRAY_UYVY,
    COLOR_YUV2GRAY_UYNV = COLOR_YUV2GRAY_UYVY,
    COLOR_YUV2GRAY_YVYU = COLOR_YUV2GRAY_YUY2,
    COLOR_YUV2GRAY_YUYV = COLOR_YUV2GRAY_YUY2,
    COLOR_YUV2GRAY_YUNV = COLOR_YUV2GRAY_YUY2,

    // alpha premultiplication
    COLOR_RGBA2mRGBA = ,
    COLOR_mRGBA2RGBA = ,

    COLOR_RGB2YUV_I420 = ,
    COLOR_BGR2YUV_I420 = ,
    COLOR_RGB2YUV_IYUV = COLOR_RGB2YUV_I420,
    COLOR_BGR2YUV_IYUV = COLOR_BGR2YUV_I420,

    COLOR_RGBA2YUV_I420 = ,
    COLOR_BGRA2YUV_I420 = ,
    COLOR_RGBA2YUV_IYUV = COLOR_RGBA2YUV_I420,
    COLOR_BGRA2YUV_IYUV = COLOR_BGRA2YUV_I420,
    COLOR_RGB2YUV_YV12 = ,
    COLOR_BGR2YUV_YV12 = ,
    COLOR_RGBA2YUV_YV12 = ,
    COLOR_BGRA2YUV_YV12 = ,

    COLOR_COLORCVT_MAX =
};