Color Space Conversions - OpenCV Documentation

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OpenCV  3.4.20-dev Open Source Computer Vision
Enumerations | Functions Color Space ConversionsImage Processing

Enumerations

enum  cv::ColorConversionCodes {   cv::COLOR_BGR2BGRA = 0,   cv::COLOR_RGB2RGBA = COLOR_BGR2BGRA,   cv::COLOR_BGRA2BGR = 1,   cv::COLOR_RGBA2RGB = COLOR_BGRA2BGR,   cv::COLOR_BGR2RGBA = 2,   cv::COLOR_RGB2BGRA = COLOR_BGR2RGBA,   cv::COLOR_RGBA2BGR = 3,   cv::COLOR_BGRA2RGB = COLOR_RGBA2BGR,   cv::COLOR_BGR2RGB = 4,   cv::COLOR_RGB2BGR = COLOR_BGR2RGB,   cv::COLOR_BGRA2RGBA = 5,   cv::COLOR_RGBA2BGRA = COLOR_BGRA2RGBA,   cv::COLOR_BGR2GRAY = 6,   cv::COLOR_RGB2GRAY = 7,   cv::COLOR_GRAY2BGR = 8,   cv::COLOR_GRAY2RGB = COLOR_GRAY2BGR,   cv::COLOR_GRAY2BGRA = 9,   cv::COLOR_GRAY2RGBA = COLOR_GRAY2BGRA,   cv::COLOR_BGRA2GRAY = 10,   cv::COLOR_RGBA2GRAY = 11,   cv::COLOR_BGR2BGR565 = 12,   cv::COLOR_RGB2BGR565 = 13,   cv::COLOR_BGR5652BGR = 14,   cv::COLOR_BGR5652RGB = 15,   cv::COLOR_BGRA2BGR565 = 16,   cv::COLOR_RGBA2BGR565 = 17,   cv::COLOR_BGR5652BGRA = 18,   cv::COLOR_BGR5652RGBA = 19,   cv::COLOR_GRAY2BGR565 = 20,   cv::COLOR_BGR5652GRAY = 21,   cv::COLOR_BGR2BGR555 = 22,   cv::COLOR_RGB2BGR555 = 23,   cv::COLOR_BGR5552BGR = 24,   cv::COLOR_BGR5552RGB = 25,   cv::COLOR_BGRA2BGR555 = 26,   cv::COLOR_RGBA2BGR555 = 27,   cv::COLOR_BGR5552BGRA = 28,   cv::COLOR_BGR5552RGBA = 29,   cv::COLOR_GRAY2BGR555 = 30,   cv::COLOR_BGR5552GRAY = 31,   cv::COLOR_BGR2XYZ = 32,   cv::COLOR_RGB2XYZ = 33,   cv::COLOR_XYZ2BGR = 34,   cv::COLOR_XYZ2RGB = 35,   cv::COLOR_BGR2YCrCb = 36,   cv::COLOR_RGB2YCrCb = 37,   cv::COLOR_YCrCb2BGR = 38,   cv::COLOR_YCrCb2RGB = 39,   cv::COLOR_BGR2HSV = 40,   cv::COLOR_RGB2HSV = 41,   cv::COLOR_BGR2Lab = 44,   cv::COLOR_RGB2Lab = 45,   cv::COLOR_BGR2Luv = 50,   cv::COLOR_RGB2Luv = 51,   cv::COLOR_BGR2HLS = 52,   cv::COLOR_RGB2HLS = 53,   cv::COLOR_HSV2BGR = 54,   cv::COLOR_HSV2RGB = 55,   cv::COLOR_Lab2BGR = 56,   cv::COLOR_Lab2RGB = 57,   cv::COLOR_Luv2BGR = 58,   cv::COLOR_Luv2RGB = 59,   cv::COLOR_HLS2BGR = 60,   cv::COLOR_HLS2RGB = 61,   cv::COLOR_BGR2HSV_FULL = 66,   cv::COLOR_RGB2HSV_FULL = 67,   cv::COLOR_BGR2HLS_FULL = 68,   cv::COLOR_RGB2HLS_FULL = 69,   cv::COLOR_HSV2BGR_FULL = 70,   cv::COLOR_HSV2RGB_FULL = 71,   cv::COLOR_HLS2BGR_FULL = 72,   cv::COLOR_HLS2RGB_FULL = 73,   cv::COLOR_LBGR2Lab = 74,   cv::COLOR_LRGB2Lab = 75,   cv::COLOR_LBGR2Luv = 76,   cv::COLOR_LRGB2Luv = 77,   cv::COLOR_Lab2LBGR = 78,   cv::COLOR_Lab2LRGB = 79,   cv::COLOR_Luv2LBGR = 80,   cv::COLOR_Luv2LRGB = 81,   cv::COLOR_BGR2YUV = 82,   cv::COLOR_RGB2YUV = 83,   cv::COLOR_YUV2BGR = 84,   cv::COLOR_YUV2RGB = 85,   cv::COLOR_YUV2RGB_NV12 = 90,   cv::COLOR_YUV2BGR_NV12 = 91,   cv::COLOR_YUV2RGB_NV21 = 92,   cv::COLOR_YUV2BGR_NV21 = 93,   cv::COLOR_YUV420sp2RGB = COLOR_YUV2RGB_NV21,   cv::COLOR_YUV420sp2BGR = COLOR_YUV2BGR_NV21,   cv::COLOR_YUV2RGBA_NV12 = 94,   cv::COLOR_YUV2BGRA_NV12 = 95,   cv::COLOR_YUV2RGBA_NV21 = 96,   cv::COLOR_YUV2BGRA_NV21 = 97,   cv::COLOR_YUV420sp2RGBA = COLOR_YUV2RGBA_NV21,   cv::COLOR_YUV420sp2BGRA = COLOR_YUV2BGRA_NV21,   cv::COLOR_YUV2RGB_YV12 = 98,   cv::COLOR_YUV2BGR_YV12 = 99,   cv::COLOR_YUV2RGB_IYUV = 100,   cv::COLOR_YUV2BGR_IYUV = 101,   cv::COLOR_YUV2RGB_I420 = COLOR_YUV2RGB_IYUV,   cv::COLOR_YUV2BGR_I420 = COLOR_YUV2BGR_IYUV,   cv::COLOR_YUV420p2RGB = COLOR_YUV2RGB_YV12,   cv::COLOR_YUV420p2BGR = COLOR_YUV2BGR_YV12,   cv::COLOR_YUV2RGBA_YV12 = 102,   cv::COLOR_YUV2BGRA_YV12 = 103,   cv::COLOR_YUV2RGBA_IYUV = 104,   cv::COLOR_YUV2BGRA_IYUV = 105,   cv::COLOR_YUV2RGBA_I420 = COLOR_YUV2RGBA_IYUV,   cv::COLOR_YUV2BGRA_I420 = COLOR_YUV2BGRA_IYUV,   cv::COLOR_YUV420p2RGBA = COLOR_YUV2RGBA_YV12,   cv::COLOR_YUV420p2BGRA = COLOR_YUV2BGRA_YV12,   cv::COLOR_YUV2GRAY_420 = 106,   cv::COLOR_YUV2GRAY_NV21 = COLOR_YUV2GRAY_420,   cv::COLOR_YUV2GRAY_NV12 = COLOR_YUV2GRAY_420,   cv::COLOR_YUV2GRAY_YV12 = COLOR_YUV2GRAY_420,   cv::COLOR_YUV2GRAY_IYUV = COLOR_YUV2GRAY_420,   cv::COLOR_YUV2GRAY_I420 = COLOR_YUV2GRAY_420,   cv::COLOR_YUV420sp2GRAY = COLOR_YUV2GRAY_420,   cv::COLOR_YUV420p2GRAY = COLOR_YUV2GRAY_420,   cv::COLOR_YUV2RGB_UYVY = 107,   cv::COLOR_YUV2BGR_UYVY = 108,   cv::COLOR_YUV2RGB_Y422 = COLOR_YUV2RGB_UYVY,   cv::COLOR_YUV2BGR_Y422 = COLOR_YUV2BGR_UYVY,   cv::COLOR_YUV2RGB_UYNV = COLOR_YUV2RGB_UYVY,   cv::COLOR_YUV2BGR_UYNV = COLOR_YUV2BGR_UYVY,   cv::COLOR_YUV2RGBA_UYVY = 111,   cv::COLOR_YUV2BGRA_UYVY = 112,   cv::COLOR_YUV2RGBA_Y422 = COLOR_YUV2RGBA_UYVY,   cv::COLOR_YUV2BGRA_Y422 = COLOR_YUV2BGRA_UYVY,   cv::COLOR_YUV2RGBA_UYNV = COLOR_YUV2RGBA_UYVY,   cv::COLOR_YUV2BGRA_UYNV = COLOR_YUV2BGRA_UYVY,   cv::COLOR_YUV2RGB_YUY2 = 115,   cv::COLOR_YUV2BGR_YUY2 = 116,   cv::COLOR_YUV2RGB_YVYU = 117,   cv::COLOR_YUV2BGR_YVYU = 118,   cv::COLOR_YUV2RGB_YUYV = COLOR_YUV2RGB_YUY2,   cv::COLOR_YUV2BGR_YUYV = COLOR_YUV2BGR_YUY2,   cv::COLOR_YUV2RGB_YUNV = COLOR_YUV2RGB_YUY2,   cv::COLOR_YUV2BGR_YUNV = COLOR_YUV2BGR_YUY2,   cv::COLOR_YUV2RGBA_YUY2 = 119,   cv::COLOR_YUV2BGRA_YUY2 = 120,   cv::COLOR_YUV2RGBA_YVYU = 121,   cv::COLOR_YUV2BGRA_YVYU = 122,   cv::COLOR_YUV2RGBA_YUYV = COLOR_YUV2RGBA_YUY2,   cv::COLOR_YUV2BGRA_YUYV = COLOR_YUV2BGRA_YUY2,   cv::COLOR_YUV2RGBA_YUNV = COLOR_YUV2RGBA_YUY2,   cv::COLOR_YUV2BGRA_YUNV = COLOR_YUV2BGRA_YUY2,   cv::COLOR_YUV2GRAY_UYVY = 123,   cv::COLOR_YUV2GRAY_YUY2 = 124,   cv::COLOR_YUV2GRAY_Y422 = COLOR_YUV2GRAY_UYVY,   cv::COLOR_YUV2GRAY_UYNV = COLOR_YUV2GRAY_UYVY,   cv::COLOR_YUV2GRAY_YVYU = COLOR_YUV2GRAY_YUY2,   cv::COLOR_YUV2GRAY_YUYV = COLOR_YUV2GRAY_YUY2,   cv::COLOR_YUV2GRAY_YUNV = COLOR_YUV2GRAY_YUY2,   cv::COLOR_RGBA2mRGBA = 125,   cv::COLOR_mRGBA2RGBA = 126,   cv::COLOR_RGB2YUV_I420 = 127,   cv::COLOR_BGR2YUV_I420 = 128,   cv::COLOR_RGB2YUV_IYUV = COLOR_RGB2YUV_I420,   cv::COLOR_BGR2YUV_IYUV = COLOR_BGR2YUV_I420,   cv::COLOR_RGBA2YUV_I420 = 129,   cv::COLOR_BGRA2YUV_I420 = 130,   cv::COLOR_RGBA2YUV_IYUV = COLOR_RGBA2YUV_I420,   cv::COLOR_BGRA2YUV_IYUV = COLOR_BGRA2YUV_I420,   cv::COLOR_RGB2YUV_YV12 = 131,   cv::COLOR_BGR2YUV_YV12 = 132,   cv::COLOR_RGBA2YUV_YV12 = 133,   cv::COLOR_BGRA2YUV_YV12 = 134,   cv::COLOR_BayerBG2BGR = 46,   cv::COLOR_BayerGB2BGR = 47,   cv::COLOR_BayerRG2BGR = 48,   cv::COLOR_BayerGR2BGR = 49,   cv::COLOR_BayerRGGB2BGR = COLOR_BayerBG2BGR,   cv::COLOR_BayerGRBG2BGR = COLOR_BayerGB2BGR,   cv::COLOR_BayerBGGR2BGR = COLOR_BayerRG2BGR,   cv::COLOR_BayerGBRG2BGR = COLOR_BayerGR2BGR,   cv::COLOR_BayerRGGB2RGB = COLOR_BayerBGGR2BGR,   cv::COLOR_BayerGRBG2RGB = COLOR_BayerGBRG2BGR,   cv::COLOR_BayerBGGR2RGB = COLOR_BayerRGGB2BGR,   cv::COLOR_BayerGBRG2RGB = COLOR_BayerGRBG2BGR,   cv::COLOR_BayerBG2RGB = COLOR_BayerRG2BGR,   cv::COLOR_BayerGB2RGB = COLOR_BayerGR2BGR,   cv::COLOR_BayerRG2RGB = COLOR_BayerBG2BGR,   cv::COLOR_BayerGR2RGB = COLOR_BayerGB2BGR,   cv::COLOR_BayerBG2GRAY = 86,   cv::COLOR_BayerGB2GRAY = 87,   cv::COLOR_BayerRG2GRAY = 88,   cv::COLOR_BayerGR2GRAY = 89,   cv::COLOR_BayerRGGB2GRAY = COLOR_BayerBG2GRAY,   cv::COLOR_BayerGRBG2GRAY = COLOR_BayerGB2GRAY,   cv::COLOR_BayerBGGR2GRAY = COLOR_BayerRG2GRAY,   cv::COLOR_BayerGBRG2GRAY = COLOR_BayerGR2GRAY,   cv::COLOR_BayerBG2BGR_VNG = 62,   cv::COLOR_BayerGB2BGR_VNG = 63,   cv::COLOR_BayerRG2BGR_VNG = 64,   cv::COLOR_BayerGR2BGR_VNG = 65,   cv::COLOR_BayerRGGB2BGR_VNG = COLOR_BayerBG2BGR_VNG,   cv::COLOR_BayerGRBG2BGR_VNG = COLOR_BayerGB2BGR_VNG,   cv::COLOR_BayerBGGR2BGR_VNG = COLOR_BayerRG2BGR_VNG,   cv::COLOR_BayerGBRG2BGR_VNG = COLOR_BayerGR2BGR_VNG,   cv::COLOR_BayerRGGB2RGB_VNG = COLOR_BayerBGGR2BGR_VNG,   cv::COLOR_BayerGRBG2RGB_VNG = COLOR_BayerGBRG2BGR_VNG,   cv::COLOR_BayerBGGR2RGB_VNG = COLOR_BayerRGGB2BGR_VNG,   cv::COLOR_BayerGBRG2RGB_VNG = COLOR_BayerGRBG2BGR_VNG,   cv::COLOR_BayerBG2RGB_VNG = COLOR_BayerRG2BGR_VNG,   cv::COLOR_BayerGB2RGB_VNG = COLOR_BayerGR2BGR_VNG,   cv::COLOR_BayerRG2RGB_VNG = COLOR_BayerBG2BGR_VNG,   cv::COLOR_BayerGR2RGB_VNG = COLOR_BayerGB2BGR_VNG,   cv::COLOR_BayerBG2BGR_EA = 135,   cv::COLOR_BayerGB2BGR_EA = 136,   cv::COLOR_BayerRG2BGR_EA = 137,   cv::COLOR_BayerGR2BGR_EA = 138,   cv::COLOR_BayerRGGB2BGR_EA = COLOR_BayerBG2BGR_EA,   cv::COLOR_BayerGRBG2BGR_EA = COLOR_BayerGB2BGR_EA,   cv::COLOR_BayerBGGR2BGR_EA = COLOR_BayerRG2BGR_EA,   cv::COLOR_BayerGBRG2BGR_EA = COLOR_BayerGR2BGR_EA,   cv::COLOR_BayerRGGB2RGB_EA = COLOR_BayerBGGR2BGR_EA,   cv::COLOR_BayerGRBG2RGB_EA = COLOR_BayerGBRG2BGR_EA,   cv::COLOR_BayerBGGR2RGB_EA = COLOR_BayerRGGB2BGR_EA,   cv::COLOR_BayerGBRG2RGB_EA = COLOR_BayerGRBG2BGR_EA,   cv::COLOR_BayerBG2RGB_EA = COLOR_BayerRG2BGR_EA,   cv::COLOR_BayerGB2RGB_EA = COLOR_BayerGR2BGR_EA,   cv::COLOR_BayerRG2RGB_EA = COLOR_BayerBG2BGR_EA,   cv::COLOR_BayerGR2RGB_EA = COLOR_BayerGB2BGR_EA,   cv::COLOR_BayerBG2BGRA = 139,   cv::COLOR_BayerGB2BGRA = 140,   cv::COLOR_BayerRG2BGRA = 141,   cv::COLOR_BayerGR2BGRA = 142,   cv::COLOR_BayerRGGB2BGRA = COLOR_BayerBG2BGRA,   cv::COLOR_BayerGRBG2BGRA = COLOR_BayerGB2BGRA,   cv::COLOR_BayerBGGR2BGRA = COLOR_BayerRG2BGRA,   cv::COLOR_BayerGBRG2BGRA = COLOR_BayerGR2BGRA,   cv::COLOR_BayerRGGB2RGBA = COLOR_BayerBGGR2BGRA,   cv::COLOR_BayerGRBG2RGBA = COLOR_BayerGBRG2BGRA,   cv::COLOR_BayerBGGR2RGBA = COLOR_BayerRGGB2BGRA,   cv::COLOR_BayerGBRG2RGBA = COLOR_BayerGRBG2BGRA,   cv::COLOR_BayerBG2RGBA = COLOR_BayerRG2BGRA,   cv::COLOR_BayerGB2RGBA = COLOR_BayerGR2BGRA,   cv::COLOR_BayerRG2RGBA = COLOR_BayerBG2BGRA,   cv::COLOR_BayerGR2RGBA = COLOR_BayerGB2BGRA,   cv::COLOR_COLORCVT_MAX = 143 }
 

Functions

void cv::cvtColor (InputArray src, OutputArray dst, int code, int dstCn=0)
 Converts an image from one color space to another. More...
 
void cv::cvtColorTwoPlane (InputArray src1, InputArray src2, OutputArray dst, int code)
 Converts an image from one color space to another where the source image is stored in two planes. More...
 
void cv::demosaicing (InputArray src, OutputArray dst, int code, int dstCn=0)
 main function for all demosaicing processes More...
 

Detailed Description

Enumeration Type Documentation

◆ ColorConversionCodes

enum cv::ColorConversionCodes

#include <opencv2/imgproc.hpp>

the color conversion codes

See alsoColor conversions
Enumerator
COLOR_BGR2BGRA Python: cv.COLOR_BGR2BGRA

add alpha channel to RGB or BGR image

COLOR_RGB2RGBA Python: cv.COLOR_RGB2RGBA
COLOR_BGRA2BGR Python: cv.COLOR_BGRA2BGR

remove alpha channel from RGB or BGR image

COLOR_RGBA2RGB Python: cv.COLOR_RGBA2RGB
COLOR_BGR2RGBA Python: cv.COLOR_BGR2RGBA

convert between RGB and BGR color spaces (with or without alpha channel)

COLOR_RGB2BGRA Python: cv.COLOR_RGB2BGRA
COLOR_RGBA2BGR Python: cv.COLOR_RGBA2BGR
COLOR_BGRA2RGB Python: cv.COLOR_BGRA2RGB
COLOR_BGR2RGB Python: cv.COLOR_BGR2RGB
COLOR_RGB2BGR Python: cv.COLOR_RGB2BGR
COLOR_BGRA2RGBA Python: cv.COLOR_BGRA2RGBA
COLOR_RGBA2BGRA Python: cv.COLOR_RGBA2BGRA
COLOR_BGR2GRAY Python: cv.COLOR_BGR2GRAY

convert between RGB/BGR and grayscale, color conversions

COLOR_RGB2GRAY Python: cv.COLOR_RGB2GRAY
COLOR_GRAY2BGR Python: cv.COLOR_GRAY2BGR
COLOR_GRAY2RGB Python: cv.COLOR_GRAY2RGB
COLOR_GRAY2BGRA Python: cv.COLOR_GRAY2BGRA
COLOR_GRAY2RGBA Python: cv.COLOR_GRAY2RGBA
COLOR_BGRA2GRAY Python: cv.COLOR_BGRA2GRAY
COLOR_RGBA2GRAY Python: cv.COLOR_RGBA2GRAY
COLOR_BGR2BGR565 Python: cv.COLOR_BGR2BGR565

convert between RGB/BGR and BGR565 (16-bit images)

COLOR_RGB2BGR565 Python: cv.COLOR_RGB2BGR565
COLOR_BGR5652BGR Python: cv.COLOR_BGR5652BGR
COLOR_BGR5652RGB Python: cv.COLOR_BGR5652RGB
COLOR_BGRA2BGR565 Python: cv.COLOR_BGRA2BGR565
COLOR_RGBA2BGR565 Python: cv.COLOR_RGBA2BGR565
COLOR_BGR5652BGRA Python: cv.COLOR_BGR5652BGRA
COLOR_BGR5652RGBA Python: cv.COLOR_BGR5652RGBA
COLOR_GRAY2BGR565 Python: cv.COLOR_GRAY2BGR565

convert between grayscale to BGR565 (16-bit images)

COLOR_BGR5652GRAY Python: cv.COLOR_BGR5652GRAY
COLOR_BGR2BGR555 Python: cv.COLOR_BGR2BGR555

convert between RGB/BGR and BGR555 (16-bit images)

COLOR_RGB2BGR555 Python: cv.COLOR_RGB2BGR555
COLOR_BGR5552BGR Python: cv.COLOR_BGR5552BGR
COLOR_BGR5552RGB Python: cv.COLOR_BGR5552RGB
COLOR_BGRA2BGR555 Python: cv.COLOR_BGRA2BGR555
COLOR_RGBA2BGR555 Python: cv.COLOR_RGBA2BGR555
COLOR_BGR5552BGRA Python: cv.COLOR_BGR5552BGRA
COLOR_BGR5552RGBA Python: cv.COLOR_BGR5552RGBA
COLOR_GRAY2BGR555 Python: cv.COLOR_GRAY2BGR555

convert between grayscale and BGR555 (16-bit images)

COLOR_BGR5552GRAY Python: cv.COLOR_BGR5552GRAY
COLOR_BGR2XYZ Python: cv.COLOR_BGR2XYZ

convert RGB/BGR to CIE XYZ, color conversions

COLOR_RGB2XYZ Python: cv.COLOR_RGB2XYZ
COLOR_XYZ2BGR Python: cv.COLOR_XYZ2BGR
COLOR_XYZ2RGB Python: cv.COLOR_XYZ2RGB
COLOR_BGR2YCrCb Python: cv.COLOR_BGR2YCrCb

convert RGB/BGR to luma-chroma (aka YCC), color conversions

COLOR_RGB2YCrCb Python: cv.COLOR_RGB2YCrCb
COLOR_YCrCb2BGR Python: cv.COLOR_YCrCb2BGR
COLOR_YCrCb2RGB Python: cv.COLOR_YCrCb2RGB
COLOR_BGR2HSV Python: cv.COLOR_BGR2HSV

convert RGB/BGR to HSV (hue saturation value) with H range 0..180 if 8 bit image, color conversions

COLOR_RGB2HSV Python: cv.COLOR_RGB2HSV
COLOR_BGR2Lab Python: cv.COLOR_BGR2Lab

convert RGB/BGR to CIE Lab, color conversions

COLOR_RGB2Lab Python: cv.COLOR_RGB2Lab
COLOR_BGR2Luv Python: cv.COLOR_BGR2Luv

convert RGB/BGR to CIE Luv, color conversions

COLOR_RGB2Luv Python: cv.COLOR_RGB2Luv
COLOR_BGR2HLS Python: cv.COLOR_BGR2HLS

convert RGB/BGR to HLS (hue lightness saturation) with H range 0..180 if 8 bit image, color conversions

COLOR_RGB2HLS Python: cv.COLOR_RGB2HLS
COLOR_HSV2BGR Python: cv.COLOR_HSV2BGR

backward conversions HSV to RGB/BGR with H range 0..180 if 8 bit image

COLOR_HSV2RGB Python: cv.COLOR_HSV2RGB
COLOR_Lab2BGR Python: cv.COLOR_Lab2BGR
COLOR_Lab2RGB Python: cv.COLOR_Lab2RGB
COLOR_Luv2BGR Python: cv.COLOR_Luv2BGR
COLOR_Luv2RGB Python: cv.COLOR_Luv2RGB
COLOR_HLS2BGR Python: cv.COLOR_HLS2BGR

backward conversions HLS to RGB/BGR with H range 0..180 if 8 bit image

COLOR_HLS2RGB Python: cv.COLOR_HLS2RGB
COLOR_BGR2HSV_FULL Python: cv.COLOR_BGR2HSV_FULL

convert RGB/BGR to HSV (hue saturation value) with H range 0..255 if 8 bit image, color conversions

COLOR_RGB2HSV_FULL Python: cv.COLOR_RGB2HSV_FULL
COLOR_BGR2HLS_FULL Python: cv.COLOR_BGR2HLS_FULL

convert RGB/BGR to HLS (hue lightness saturation) with H range 0..255 if 8 bit image, color conversions

COLOR_RGB2HLS_FULL Python: cv.COLOR_RGB2HLS_FULL
COLOR_HSV2BGR_FULL Python: cv.COLOR_HSV2BGR_FULL

backward conversions HSV to RGB/BGR with H range 0..255 if 8 bit image

COLOR_HSV2RGB_FULL Python: cv.COLOR_HSV2RGB_FULL
COLOR_HLS2BGR_FULL Python: cv.COLOR_HLS2BGR_FULL

backward conversions HLS to RGB/BGR with H range 0..255 if 8 bit image

COLOR_HLS2RGB_FULL Python: cv.COLOR_HLS2RGB_FULL
COLOR_LBGR2Lab Python: cv.COLOR_LBGR2Lab
COLOR_LRGB2Lab Python: cv.COLOR_LRGB2Lab
COLOR_LBGR2Luv Python: cv.COLOR_LBGR2Luv
COLOR_LRGB2Luv Python: cv.COLOR_LRGB2Luv
COLOR_Lab2LBGR Python: cv.COLOR_Lab2LBGR
COLOR_Lab2LRGB Python: cv.COLOR_Lab2LRGB
COLOR_Luv2LBGR Python: cv.COLOR_Luv2LBGR
COLOR_Luv2LRGB Python: cv.COLOR_Luv2LRGB
COLOR_BGR2YUV Python: cv.COLOR_BGR2YUV

convert between RGB/BGR and YUV

COLOR_RGB2YUV Python: cv.COLOR_RGB2YUV
COLOR_YUV2BGR Python: cv.COLOR_YUV2BGR
COLOR_YUV2RGB Python: cv.COLOR_YUV2RGB
COLOR_YUV2RGB_NV12 Python: cv.COLOR_YUV2RGB_NV12

YUV 4:2:0 family to RGB.

COLOR_YUV2BGR_NV12 Python: cv.COLOR_YUV2BGR_NV12
COLOR_YUV2RGB_NV21 Python: cv.COLOR_YUV2RGB_NV21
COLOR_YUV2BGR_NV21 Python: cv.COLOR_YUV2BGR_NV21
COLOR_YUV420sp2RGB Python: cv.COLOR_YUV420sp2RGB
COLOR_YUV420sp2BGR Python: cv.COLOR_YUV420sp2BGR
COLOR_YUV2RGBA_NV12 Python: cv.COLOR_YUV2RGBA_NV12
COLOR_YUV2BGRA_NV12 Python: cv.COLOR_YUV2BGRA_NV12
COLOR_YUV2RGBA_NV21 Python: cv.COLOR_YUV2RGBA_NV21
COLOR_YUV2BGRA_NV21 Python: cv.COLOR_YUV2BGRA_NV21
COLOR_YUV420sp2RGBA Python: cv.COLOR_YUV420sp2RGBA
COLOR_YUV420sp2BGRA Python: cv.COLOR_YUV420sp2BGRA
COLOR_YUV2RGB_YV12 Python: cv.COLOR_YUV2RGB_YV12
COLOR_YUV2BGR_YV12 Python: cv.COLOR_YUV2BGR_YV12
COLOR_YUV2RGB_IYUV Python: cv.COLOR_YUV2RGB_IYUV
COLOR_YUV2BGR_IYUV Python: cv.COLOR_YUV2BGR_IYUV
COLOR_YUV2RGB_I420 Python: cv.COLOR_YUV2RGB_I420
COLOR_YUV2BGR_I420 Python: cv.COLOR_YUV2BGR_I420
COLOR_YUV420p2RGB Python: cv.COLOR_YUV420p2RGB
COLOR_YUV420p2BGR Python: cv.COLOR_YUV420p2BGR
COLOR_YUV2RGBA_YV12 Python: cv.COLOR_YUV2RGBA_YV12
COLOR_YUV2BGRA_YV12 Python: cv.COLOR_YUV2BGRA_YV12
COLOR_YUV2RGBA_IYUV Python: cv.COLOR_YUV2RGBA_IYUV
COLOR_YUV2BGRA_IYUV Python: cv.COLOR_YUV2BGRA_IYUV
COLOR_YUV2RGBA_I420 Python: cv.COLOR_YUV2RGBA_I420
COLOR_YUV2BGRA_I420 Python: cv.COLOR_YUV2BGRA_I420
COLOR_YUV420p2RGBA Python: cv.COLOR_YUV420p2RGBA
COLOR_YUV420p2BGRA Python: cv.COLOR_YUV420p2BGRA
COLOR_YUV2GRAY_420 Python: cv.COLOR_YUV2GRAY_420
COLOR_YUV2GRAY_NV21 Python: cv.COLOR_YUV2GRAY_NV21
COLOR_YUV2GRAY_NV12 Python: cv.COLOR_YUV2GRAY_NV12
COLOR_YUV2GRAY_YV12 Python: cv.COLOR_YUV2GRAY_YV12
COLOR_YUV2GRAY_IYUV Python: cv.COLOR_YUV2GRAY_IYUV
COLOR_YUV2GRAY_I420 Python: cv.COLOR_YUV2GRAY_I420
COLOR_YUV420sp2GRAY Python: cv.COLOR_YUV420sp2GRAY
COLOR_YUV420p2GRAY Python: cv.COLOR_YUV420p2GRAY
COLOR_YUV2RGB_UYVY Python: cv.COLOR_YUV2RGB_UYVY

YUV 4:2:2 family to RGB.

COLOR_YUV2BGR_UYVY Python: cv.COLOR_YUV2BGR_UYVY
COLOR_YUV2RGB_Y422 Python: cv.COLOR_YUV2RGB_Y422
COLOR_YUV2BGR_Y422 Python: cv.COLOR_YUV2BGR_Y422
COLOR_YUV2RGB_UYNV Python: cv.COLOR_YUV2RGB_UYNV
COLOR_YUV2BGR_UYNV Python: cv.COLOR_YUV2BGR_UYNV
COLOR_YUV2RGBA_UYVY Python: cv.COLOR_YUV2RGBA_UYVY
COLOR_YUV2BGRA_UYVY Python: cv.COLOR_YUV2BGRA_UYVY
COLOR_YUV2RGBA_Y422 Python: cv.COLOR_YUV2RGBA_Y422
COLOR_YUV2BGRA_Y422 Python: cv.COLOR_YUV2BGRA_Y422
COLOR_YUV2RGBA_UYNV Python: cv.COLOR_YUV2RGBA_UYNV
COLOR_YUV2BGRA_UYNV Python: cv.COLOR_YUV2BGRA_UYNV
COLOR_YUV2RGB_YUY2 Python: cv.COLOR_YUV2RGB_YUY2
COLOR_YUV2BGR_YUY2 Python: cv.COLOR_YUV2BGR_YUY2
COLOR_YUV2RGB_YVYU Python: cv.COLOR_YUV2RGB_YVYU
COLOR_YUV2BGR_YVYU Python: cv.COLOR_YUV2BGR_YVYU
COLOR_YUV2RGB_YUYV Python: cv.COLOR_YUV2RGB_YUYV
COLOR_YUV2BGR_YUYV Python: cv.COLOR_YUV2BGR_YUYV
COLOR_YUV2RGB_YUNV Python: cv.COLOR_YUV2RGB_YUNV
COLOR_YUV2BGR_YUNV Python: cv.COLOR_YUV2BGR_YUNV
COLOR_YUV2RGBA_YUY2 Python: cv.COLOR_YUV2RGBA_YUY2
COLOR_YUV2BGRA_YUY2 Python: cv.COLOR_YUV2BGRA_YUY2
COLOR_YUV2RGBA_YVYU Python: cv.COLOR_YUV2RGBA_YVYU
COLOR_YUV2BGRA_YVYU Python: cv.COLOR_YUV2BGRA_YVYU
COLOR_YUV2RGBA_YUYV Python: cv.COLOR_YUV2RGBA_YUYV
COLOR_YUV2BGRA_YUYV Python: cv.COLOR_YUV2BGRA_YUYV
COLOR_YUV2RGBA_YUNV Python: cv.COLOR_YUV2RGBA_YUNV
COLOR_YUV2BGRA_YUNV Python: cv.COLOR_YUV2BGRA_YUNV
COLOR_YUV2GRAY_UYVY Python: cv.COLOR_YUV2GRAY_UYVY
COLOR_YUV2GRAY_YUY2 Python: cv.COLOR_YUV2GRAY_YUY2
COLOR_YUV2GRAY_Y422 Python: cv.COLOR_YUV2GRAY_Y422
COLOR_YUV2GRAY_UYNV Python: cv.COLOR_YUV2GRAY_UYNV
COLOR_YUV2GRAY_YVYU Python: cv.COLOR_YUV2GRAY_YVYU
COLOR_YUV2GRAY_YUYV Python: cv.COLOR_YUV2GRAY_YUYV
COLOR_YUV2GRAY_YUNV Python: cv.COLOR_YUV2GRAY_YUNV
COLOR_RGBA2mRGBA Python: cv.COLOR_RGBA2mRGBA

alpha premultiplication

COLOR_mRGBA2RGBA Python: cv.COLOR_mRGBA2RGBA
COLOR_RGB2YUV_I420 Python: cv.COLOR_RGB2YUV_I420

RGB to YUV 4:2:0 family.

COLOR_BGR2YUV_I420 Python: cv.COLOR_BGR2YUV_I420
COLOR_RGB2YUV_IYUV Python: cv.COLOR_RGB2YUV_IYUV
COLOR_BGR2YUV_IYUV Python: cv.COLOR_BGR2YUV_IYUV
COLOR_RGBA2YUV_I420 Python: cv.COLOR_RGBA2YUV_I420
COLOR_BGRA2YUV_I420 Python: cv.COLOR_BGRA2YUV_I420
COLOR_RGBA2YUV_IYUV Python: cv.COLOR_RGBA2YUV_IYUV
COLOR_BGRA2YUV_IYUV Python: cv.COLOR_BGRA2YUV_IYUV
COLOR_RGB2YUV_YV12 Python: cv.COLOR_RGB2YUV_YV12
COLOR_BGR2YUV_YV12 Python: cv.COLOR_BGR2YUV_YV12
COLOR_RGBA2YUV_YV12 Python: cv.COLOR_RGBA2YUV_YV12
COLOR_BGRA2YUV_YV12 Python: cv.COLOR_BGRA2YUV_YV12
COLOR_BayerBG2BGR Python: cv.COLOR_BayerBG2BGR

Demosaicing, see color conversions for additional information.

equivalent to RGGB Bayer pattern

COLOR_BayerGB2BGR Python: cv.COLOR_BayerGB2BGR

equivalent to GRBG Bayer pattern

COLOR_BayerRG2BGR Python: cv.COLOR_BayerRG2BGR

equivalent to BGGR Bayer pattern

COLOR_BayerGR2BGR Python: cv.COLOR_BayerGR2BGR

equivalent to GBRG Bayer pattern

COLOR_BayerRGGB2BGR Python: cv.COLOR_BayerRGGB2BGR
COLOR_BayerGRBG2BGR Python: cv.COLOR_BayerGRBG2BGR
COLOR_BayerBGGR2BGR Python: cv.COLOR_BayerBGGR2BGR
COLOR_BayerGBRG2BGR Python: cv.COLOR_BayerGBRG2BGR
COLOR_BayerRGGB2RGB Python: cv.COLOR_BayerRGGB2RGB
COLOR_BayerGRBG2RGB Python: cv.COLOR_BayerGRBG2RGB
COLOR_BayerBGGR2RGB Python: cv.COLOR_BayerBGGR2RGB
COLOR_BayerGBRG2RGB Python: cv.COLOR_BayerGBRG2RGB
COLOR_BayerBG2RGB Python: cv.COLOR_BayerBG2RGB

equivalent to RGGB Bayer pattern

COLOR_BayerGB2RGB Python: cv.COLOR_BayerGB2RGB

equivalent to GRBG Bayer pattern

COLOR_BayerRG2RGB Python: cv.COLOR_BayerRG2RGB

equivalent to BGGR Bayer pattern

COLOR_BayerGR2RGB Python: cv.COLOR_BayerGR2RGB

equivalent to GBRG Bayer pattern

COLOR_BayerBG2GRAY Python: cv.COLOR_BayerBG2GRAY

equivalent to RGGB Bayer pattern

COLOR_BayerGB2GRAY Python: cv.COLOR_BayerGB2GRAY

equivalent to GRBG Bayer pattern

COLOR_BayerRG2GRAY Python: cv.COLOR_BayerRG2GRAY

equivalent to BGGR Bayer pattern

COLOR_BayerGR2GRAY Python: cv.COLOR_BayerGR2GRAY

equivalent to GBRG Bayer pattern

COLOR_BayerRGGB2GRAY Python: cv.COLOR_BayerRGGB2GRAY
COLOR_BayerGRBG2GRAY Python: cv.COLOR_BayerGRBG2GRAY
COLOR_BayerBGGR2GRAY Python: cv.COLOR_BayerBGGR2GRAY
COLOR_BayerGBRG2GRAY Python: cv.COLOR_BayerGBRG2GRAY
COLOR_BayerBG2BGR_VNG Python: cv.COLOR_BayerBG2BGR_VNG

Demosaicing using Variable Number of Gradients.

equivalent to RGGB Bayer pattern

COLOR_BayerGB2BGR_VNG Python: cv.COLOR_BayerGB2BGR_VNG

equivalent to GRBG Bayer pattern

COLOR_BayerRG2BGR_VNG Python: cv.COLOR_BayerRG2BGR_VNG

equivalent to BGGR Bayer pattern

COLOR_BayerGR2BGR_VNG Python: cv.COLOR_BayerGR2BGR_VNG

equivalent to GBRG Bayer pattern

COLOR_BayerRGGB2BGR_VNG Python: cv.COLOR_BayerRGGB2BGR_VNG
COLOR_BayerGRBG2BGR_VNG Python: cv.COLOR_BayerGRBG2BGR_VNG
COLOR_BayerBGGR2BGR_VNG Python: cv.COLOR_BayerBGGR2BGR_VNG
COLOR_BayerGBRG2BGR_VNG Python: cv.COLOR_BayerGBRG2BGR_VNG
COLOR_BayerRGGB2RGB_VNG Python: cv.COLOR_BayerRGGB2RGB_VNG
COLOR_BayerGRBG2RGB_VNG Python: cv.COLOR_BayerGRBG2RGB_VNG
COLOR_BayerBGGR2RGB_VNG Python: cv.COLOR_BayerBGGR2RGB_VNG
COLOR_BayerGBRG2RGB_VNG Python: cv.COLOR_BayerGBRG2RGB_VNG
COLOR_BayerBG2RGB_VNG Python: cv.COLOR_BayerBG2RGB_VNG

equivalent to RGGB Bayer pattern

COLOR_BayerGB2RGB_VNG Python: cv.COLOR_BayerGB2RGB_VNG

equivalent to GRBG Bayer pattern

COLOR_BayerRG2RGB_VNG Python: cv.COLOR_BayerRG2RGB_VNG

equivalent to BGGR Bayer pattern

COLOR_BayerGR2RGB_VNG Python: cv.COLOR_BayerGR2RGB_VNG

equivalent to GBRG Bayer pattern

COLOR_BayerBG2BGR_EA Python: cv.COLOR_BayerBG2BGR_EA

Edge-Aware Demosaicing.

equivalent to RGGB Bayer pattern

COLOR_BayerGB2BGR_EA Python: cv.COLOR_BayerGB2BGR_EA

equivalent to GRBG Bayer pattern

COLOR_BayerRG2BGR_EA Python: cv.COLOR_BayerRG2BGR_EA

equivalent to BGGR Bayer pattern

COLOR_BayerGR2BGR_EA Python: cv.COLOR_BayerGR2BGR_EA

equivalent to GBRG Bayer pattern

COLOR_BayerRGGB2BGR_EA Python: cv.COLOR_BayerRGGB2BGR_EA
COLOR_BayerGRBG2BGR_EA Python: cv.COLOR_BayerGRBG2BGR_EA
COLOR_BayerBGGR2BGR_EA Python: cv.COLOR_BayerBGGR2BGR_EA
COLOR_BayerGBRG2BGR_EA Python: cv.COLOR_BayerGBRG2BGR_EA
COLOR_BayerRGGB2RGB_EA Python: cv.COLOR_BayerRGGB2RGB_EA
COLOR_BayerGRBG2RGB_EA Python: cv.COLOR_BayerGRBG2RGB_EA
COLOR_BayerBGGR2RGB_EA Python: cv.COLOR_BayerBGGR2RGB_EA
COLOR_BayerGBRG2RGB_EA Python: cv.COLOR_BayerGBRG2RGB_EA
COLOR_BayerBG2RGB_EA Python: cv.COLOR_BayerBG2RGB_EA

equivalent to RGGB Bayer pattern

COLOR_BayerGB2RGB_EA Python: cv.COLOR_BayerGB2RGB_EA

equivalent to GRBG Bayer pattern

COLOR_BayerRG2RGB_EA Python: cv.COLOR_BayerRG2RGB_EA

equivalent to BGGR Bayer pattern

COLOR_BayerGR2RGB_EA Python: cv.COLOR_BayerGR2RGB_EA

equivalent to GBRG Bayer pattern

COLOR_BayerBG2BGRA Python: cv.COLOR_BayerBG2BGRA

Demosaicing with alpha channel.

equivalent to RGGB Bayer pattern

COLOR_BayerGB2BGRA Python: cv.COLOR_BayerGB2BGRA

equivalent to GRBG Bayer pattern

COLOR_BayerRG2BGRA Python: cv.COLOR_BayerRG2BGRA

equivalent to BGGR Bayer pattern

COLOR_BayerGR2BGRA Python: cv.COLOR_BayerGR2BGRA

equivalent to GBRG Bayer pattern

COLOR_BayerRGGB2BGRA Python: cv.COLOR_BayerRGGB2BGRA
COLOR_BayerGRBG2BGRA Python: cv.COLOR_BayerGRBG2BGRA
COLOR_BayerBGGR2BGRA Python: cv.COLOR_BayerBGGR2BGRA
COLOR_BayerGBRG2BGRA Python: cv.COLOR_BayerGBRG2BGRA
COLOR_BayerRGGB2RGBA Python: cv.COLOR_BayerRGGB2RGBA
COLOR_BayerGRBG2RGBA Python: cv.COLOR_BayerGRBG2RGBA
COLOR_BayerBGGR2RGBA Python: cv.COLOR_BayerBGGR2RGBA
COLOR_BayerGBRG2RGBA Python: cv.COLOR_BayerGBRG2RGBA
COLOR_BayerBG2RGBA Python: cv.COLOR_BayerBG2RGBA

equivalent to RGGB Bayer pattern

COLOR_BayerGB2RGBA Python: cv.COLOR_BayerGB2RGBA

equivalent to GRBG Bayer pattern

COLOR_BayerRG2RGBA Python: cv.COLOR_BayerRG2RGBA

equivalent to BGGR Bayer pattern

COLOR_BayerGR2RGBA Python: cv.COLOR_BayerGR2RGBA

equivalent to GBRG Bayer pattern

COLOR_COLORCVT_MAX Python: cv.COLOR_COLORCVT_MAX

Function Documentation

◆ cvtColor()

void cv::cvtColor ( InputArray  src,
OutputArray  dst,
int  code,
int  dstCn = 0 
)
Python:
cv.cvtColor(src, code[, dst[, dstCn]]) -> dst

#include <opencv2/imgproc.hpp>

Converts an image from one color space to another.

The function converts an input image from one color space to another. In case of a transformation to-from RGB color space, the order of the channels should be specified explicitly (RGB or BGR). Note that the default color format in OpenCV is often referred to as RGB but it is actually BGR (the bytes are reversed). So the first byte in a standard (24-bit) color image will be an 8-bit Blue component, the second byte will be Green, and the third byte will be Red. The fourth, fifth, and sixth bytes would then be the second pixel (Blue, then Green, then Red), and so on.

The conventional ranges for R, G, and B channel values are:

  • 0 to 255 for CV_8U images
  • 0 to 65535 for CV_16U images
  • 0 to 1 for CV_32F images

In case of linear transformations, the range does not matter. But in case of a non-linear transformation, an input RGB image should be normalized to the proper value range to get the correct results, for example, for RGB \(\rightarrow\) L*u*v* transformation. For example, if you have a 32-bit floating-point image directly converted from an 8-bit image without any scaling, then it will have the 0..255 value range instead of 0..1 assumed by the function. So, before calling cvtColor , you need first to scale the image down:

img *= 1./255;cvtColor(img, img, COLOR_BGR2Luv);

If you use cvtColor with 8-bit images, the conversion will have some information lost. For many applications, this will not be noticeable but it is recommended to use 32-bit images in applications that need the full range of colors or that convert an image before an operation and then convert back.

If conversion adds the alpha channel, its value will set to the maximum of corresponding channel range: 255 for CV_8U, 65535 for CV_16U, 1 for CV_32F.

Parameters
srcinput image: 8-bit unsigned, 16-bit unsigned ( CV_16UC... ), or single-precision floating-point.
dstoutput image of the same size and depth as src.
codecolor space conversion code (see ColorConversionCodes).
dstCnnumber of channels in the destination image; if the parameter is 0, the number of the channels is derived automatically from src and code.
See alsoColor conversions Examples: samples/cpp/camshiftdemo.cpp, samples/cpp/edge.cpp, samples/cpp/facedetect.cpp, samples/cpp/ffilldemo.cpp, samples/cpp/lkdemo.cpp, samples/cpp/train_HOG.cpp, samples/cpp/tutorial_code/ImgTrans/houghcircles.cpp, samples/cpp/tutorial_code/ImgTrans/houghlines.cpp, samples/cpp/tutorial_code/ImgTrans/Sobel_Demo.cpp, samples/cpp/tutorial_code/ml/introduction_to_pca/introduction_to_pca.cpp, samples/cpp/watershed.cpp, samples/dnn/colorization.cpp, samples/dnn/text_detection.cpp, and samples/tapi/hog.cpp.

◆ cvtColorTwoPlane()

void cv::cvtColorTwoPlane ( InputArray  src1,
InputArray  src2,
OutputArray  dst,
int  code 
)
Python:
cv.cvtColorTwoPlane(src1, src2, code[, dst]) -> dst

#include <opencv2/imgproc.hpp>

Converts an image from one color space to another where the source image is stored in two planes.

This function only supports YUV420 to RGB conversion as of now.

Parameters
src18-bit image (CV_8U) of the Y plane.
src2image containing interleaved U/V plane.
dstoutput image.
codeSpecifies the type of conversion. It can take any of the following values:
  • COLOR_YUV2BGR_NV12
  • COLOR_YUV2RGB_NV12
  • COLOR_YUV2BGRA_NV12
  • COLOR_YUV2RGBA_NV12
  • COLOR_YUV2BGR_NV21
  • COLOR_YUV2RGB_NV21
  • COLOR_YUV2BGRA_NV21
  • COLOR_YUV2RGBA_NV21

◆ demosaicing()

void cv::demosaicing ( InputArray  src,
OutputArray  dst,
int  code,
int  dstCn = 0 
)
Python:
cv.demosaicing(src, code[, dst[, dstCn]]) -> dst

#include <opencv2/imgproc.hpp>

main function for all demosaicing processes

Parameters
srcinput image: 8-bit unsigned or 16-bit unsigned.
dstoutput image of the same size and depth as src.
codeColor space conversion code (see the description below).
dstCnnumber of channels in the destination image; if the parameter is 0, the number of the channels is derived automatically from src and code.

The function can do the following transformations:

  • Demosaicing using bilinear interpolation

    COLOR_BayerBG2BGR , COLOR_BayerGB2BGR , COLOR_BayerRG2BGR , COLOR_BayerGR2BGR

    COLOR_BayerBG2GRAY , COLOR_BayerGB2GRAY , COLOR_BayerRG2GRAY , COLOR_BayerGR2GRAY

  • Demosaicing using Variable Number of Gradients.

    COLOR_BayerBG2BGR_VNG , COLOR_BayerGB2BGR_VNG , COLOR_BayerRG2BGR_VNG , COLOR_BayerGR2BGR_VNG

  • Edge-Aware Demosaicing.

    COLOR_BayerBG2BGR_EA , COLOR_BayerGB2BGR_EA , COLOR_BayerRG2BGR_EA , COLOR_BayerGR2BGR_EA

  • Demosaicing with alpha channel

    COLOR_BayerBG2BGRA , COLOR_BayerGB2BGRA , COLOR_BayerRG2BGRA , COLOR_BayerGR2BGRA

See alsocvtColor Generated on Tue Jun 17 2025 23:15:49 for OpenCV by   doxygen 1.8.13

Tag » Color Space Conversion