How to create openCV image of certain (R, G, B) color and get that color name?
I need to create an image filled with some (R,G,B) color. And 开发者_高级运维get that color name like some (R,G,B) = black or red and so on. Can we do such thing with openCV, and how to do it?
Static color map class with static methods (both answers combined). Simply copy and use.
#pragma once
#include <opencv/cv.hpp>
#include <opencv/cv.h>
class Color
{
public:
static cv::Scalar aliceblue;
static cv::Scalar antiquewhite;
static cv::Scalar aqua;
static cv::Scalar aquamarine;
static cv::Scalar azure;
static cv::Scalar beige;
static cv::Scalar bisque;
static cv::Scalar black;
static cv::Scalar blanchedalmond;
static cv::Scalar blue;
static cv::Scalar blueviolet;
static cv::Scalar brown;
static cv::Scalar burlywood;
static cv::Scalar cadetblue;
static cv::Scalar chartreuse;
static cv::Scalar chocolate;
static cv::Scalar coral;
static cv::Scalar cornflowerblue;
static cv::Scalar cornsilk;
static cv::Scalar crimson;
static cv::Scalar cyan;
static cv::Scalar darkblue;
static cv::Scalar darkcyan;
static cv::Scalar darkgoldenrod;
static cv::Scalar darkgray;
static cv::Scalar darkgreen;
static cv::Scalar darkgrey;
static cv::Scalar darkkhaki;
static cv::Scalar darkmagenta;
static cv::Scalar darkolivegreen;
static cv::Scalar darkorange;
static cv::Scalar darkorchid;
static cv::Scalar darkred;
static cv::Scalar darksalmon;
static cv::Scalar darkseagreen;
static cv::Scalar darkslateblue;
static cv::Scalar darkslategray;
static cv::Scalar darkslategrey;
static cv::Scalar darkturquoise;
static cv::Scalar darkviolet;
static cv::Scalar deeppink;
static cv::Scalar deepskyblue;
static cv::Scalar dimgray;
static cv::Scalar dimgrey;
static cv::Scalar dodgerblue;
static cv::Scalar firebrick;
static cv::Scalar floralwhite;
static cv::Scalar forestgreen;
static cv::Scalar fuchsia;
static cv::Scalar gainsboro;
static cv::Scalar ghostwhite;
static cv::Scalar gold;
static cv::Scalar goldenrod;
static cv::Scalar gray;
static cv::Scalar green;
static cv::Scalar greenyellow;
static cv::Scalar grey;
static cv::Scalar honeydew;
static cv::Scalar hotpink;
static cv::Scalar indianred;
static cv::Scalar indigo;
static cv::Scalar ivory;
static cv::Scalar khaki;
static cv::Scalar lavender;
static cv::Scalar lavenderblush;
static cv::Scalar lawngreen;
static cv::Scalar lemonchiffon;
static cv::Scalar lightblue;
static cv::Scalar lightcoral;
static cv::Scalar lightcyan;
static cv::Scalar lightgoldenrodyellow;
static cv::Scalar lightgray;
static cv::Scalar lightgreen;
static cv::Scalar lightgrey;
static cv::Scalar lightpink;
static cv::Scalar lightsalmon;
static cv::Scalar lightseagreen;
static cv::Scalar lightskyblue;
static cv::Scalar lightslategray;
static cv::Scalar lightslategrey;
static cv::Scalar lightsteelblue;
static cv::Scalar lightyellow;
static cv::Scalar lime;
static cv::Scalar limegreen;
static cv::Scalar linen;
static cv::Scalar magenta;
static cv::Scalar maroon;
static cv::Scalar mediumaquamarine;
static cv::Scalar mediumblue;
static cv::Scalar mediumorchid;
static cv::Scalar mediumpurple;
static cv::Scalar mediumseagreen;
static cv::Scalar mediumslateblue;
static cv::Scalar mediumspringgreen;
static cv::Scalar mediumturquoise;
static cv::Scalar mediumvioletred;
static cv::Scalar midnightblue;
static cv::Scalar mintcream;
static cv::Scalar mistyrose;
static cv::Scalar moccasin;
static cv::Scalar navajowhite;
static cv::Scalar navy;
static cv::Scalar oldlace;
static cv::Scalar olive;
static cv::Scalar olivedrab;
static cv::Scalar orange;
static cv::Scalar orangered;
static cv::Scalar orchid;
static cv::Scalar palegoldenrod;
static cv::Scalar palegreen;
static cv::Scalar paleturquoise;
static cv::Scalar palevioletred;
static cv::Scalar papayawhip;
static cv::Scalar peachpuff;
static cv::Scalar peru;
static cv::Scalar pink;
static cv::Scalar plum;
static cv::Scalar powderblue;
static cv::Scalar purple;
static cv::Scalar red;
static cv::Scalar rosybrown;
static cv::Scalar royalblue;
static cv::Scalar saddlebrown;
static cv::Scalar salmon;
static cv::Scalar sandybrown;
static cv::Scalar seagreen;
static cv::Scalar seashell;
static cv::Scalar sienna;
static cv::Scalar silver;
static cv::Scalar skyblue;
static cv::Scalar slateblue;
static cv::Scalar slategray;
static cv::Scalar slategrey;
static cv::Scalar snow;
static cv::Scalar springgreen;
static cv::Scalar steelblue;
static cv::Scalar tan;
static cv::Scalar teal;
static cv::Scalar thistle;
static cv::Scalar tomato;
static cv::Scalar turquoise;
static cv::Scalar violet;
static cv::Scalar wheat;
static cv::Scalar white;
static cv::Scalar whitesmoke;
static cv::Scalar yellow;
static cv::Scalar yellowgreen;
};
//In the cpp file add:
cv::Scalar Color::aliceblue(255, 248, 240);
cv::Scalar Color::antiquewhite(215, 235, 250);
cv::Scalar Color::aqua(255, 255, 0);
cv::Scalar Color::aquamarine(212, 255, 127);
cv::Scalar Color::azure(255, 255, 240);
cv::Scalar Color::beige(220, 245, 245);
cv::Scalar Color::bisque(196, 228, 255);
cv::Scalar Color::black(0, 0, 0);
cv::Scalar Color::blanchedalmond(205, 235, 255);
cv::Scalar Color::blue(255, 0, 0);
cv::Scalar Color::blueviolet(226, 43, 138);
cv::Scalar Color::brown(42, 42, 165);
cv::Scalar Color::burlywood(135, 184, 222);
cv::Scalar Color::cadetblue(160, 158, 95);
cv::Scalar Color::chartreuse(0, 255, 127);
cv::Scalar Color::chocolate(30, 105, 210);
cv::Scalar Color::coral(80, 127, 255);
cv::Scalar Color::cornflowerblue(237, 149, 100);
cv::Scalar Color::cornsilk(220, 248, 255);
cv::Scalar Color::crimson(60, 20, 220);
cv::Scalar Color::cyan(255, 255, 0);
cv::Scalar Color::darkblue(139, 0, 0);
cv::Scalar Color::darkcyan(139, 139, 0);
cv::Scalar Color::darkgoldenrod(11, 134, 184);
cv::Scalar Color::darkgray(169, 169, 169);
cv::Scalar Color::darkgreen(0, 100, 0);
cv::Scalar Color::darkgrey(169, 169, 169);
cv::Scalar Color::darkkhaki(107, 183, 189);
cv::Scalar Color::darkmagenta(139, 0, 139);
cv::Scalar Color::darkolivegreen(47, 107, 85);
cv::Scalar Color::darkorange(0, 140, 255);
cv::Scalar Color::darkorchid(204, 50, 153);
cv::Scalar Color::darkred(0, 0, 139);
cv::Scalar Color::darksalmon(122, 150, 233);
cv::Scalar Color::darkseagreen(143, 188, 143);
cv::Scalar Color::darkslateblue(139, 61, 72);
cv::Scalar Color::darkslategray(79, 79, 47);
cv::Scalar Color::darkslategrey(79, 79, 47);
cv::Scalar Color::darkturquoise(209, 206, 0);
cv::Scalar Color::darkviolet(211, 0, 148);
cv::Scalar Color::deeppink(147, 20, 255);
cv::Scalar Color::deepskyblue(255, 191, 0);
cv::Scalar Color::dimgray(105, 105, 105);
cv::Scalar Color::dimgrey(105, 105, 105);
cv::Scalar Color::dodgerblue(255, 144, 30);
cv::Scalar Color::firebrick(34, 34, 178);
cv::Scalar Color::floralwhite(240, 250, 255);
cv::Scalar Color::forestgreen(34, 139, 34);
cv::Scalar Color::fuchsia(255, 0, 255);
cv::Scalar Color::gainsboro(220, 220, 220);
cv::Scalar Color::ghostwhite(255, 248, 248);
cv::Scalar Color::gold(0, 215, 255);
cv::Scalar Color::goldenrod(32, 165, 218);
cv::Scalar Color::gray(128, 128, 128);
cv::Scalar Color::green(0, 128, 0);
cv::Scalar Color::greenyellow(47, 255, 173);
cv::Scalar Color::grey(128, 128, 128);
cv::Scalar Color::honeydew(240, 255, 240);
cv::Scalar Color::hotpink(180, 105, 255);
cv::Scalar Color::indianred(92, 92, 205);
cv::Scalar Color::indigo(130, 0, 75);
cv::Scalar Color::ivory(240, 255, 255);
cv::Scalar Color::khaki(140, 230, 240);
cv::Scalar Color::lavender(250, 230, 230);
cv::Scalar Color::lavenderblush(245, 240, 255);
cv::Scalar Color::lawngreen(0, 252, 124);
cv::Scalar Color::lemonchiffon(205, 250, 255);
cv::Scalar Color::lightblue(230, 216, 173);
cv::Scalar Color::lightcoral(128, 128, 240);
cv::Scalar Color::lightcyan(255, 255, 224);
cv::Scalar Color::lightgoldenrodyellow(210, 250, 250);
cv::Scalar Color::lightgray(211, 211, 211);
cv::Scalar Color::lightgreen(144, 238, 144);
cv::Scalar Color::lightgrey(211, 211, 211);
cv::Scalar Color::lightpink(193, 182, 255);
cv::Scalar Color::lightsalmon(122, 160, 255);
cv::Scalar Color::lightseagreen(170, 178, 32);
cv::Scalar Color::lightskyblue(250, 206, 135);
cv::Scalar Color::lightslategray(153, 136, 119);
cv::Scalar Color::lightslategrey(153, 136, 119);
cv::Scalar Color::lightsteelblue(222, 196, 176);
cv::Scalar Color::lightyellow(224, 255, 255);
cv::Scalar Color::lime(0, 255, 0);
cv::Scalar Color::limegreen(50, 205, 50);
cv::Scalar Color::linen(230, 240, 250);
cv::Scalar Color::magenta(255, 0, 255);
cv::Scalar Color::maroon(0, 0, 128);
cv::Scalar Color::mediumaquamarine(170, 205, 102);
cv::Scalar Color::mediumblue(205, 0, 0);
cv::Scalar Color::mediumorchid(211, 85, 186);
cv::Scalar Color::mediumpurple(219, 112, 147);
cv::Scalar Color::mediumseagreen(113, 179, 60);
cv::Scalar Color::mediumslateblue(238, 104, 123);
cv::Scalar Color::mediumspringgreen(154, 250, 0);
cv::Scalar Color::mediumturquoise(204, 209, 72);
cv::Scalar Color::mediumvioletred(133, 21, 199);
cv::Scalar Color::midnightblue(112, 25, 25);
cv::Scalar Color::mintcream(250, 255, 245);
cv::Scalar Color::mistyrose(225, 228, 255);
cv::Scalar Color::moccasin(181, 228, 255);
cv::Scalar Color::navajowhite(173, 222, 255);
cv::Scalar Color::navy(128, 0, 0);
cv::Scalar Color::oldlace(230, 245, 253);
cv::Scalar Color::olive(0, 128, 128);
cv::Scalar Color::olivedrab(35, 142, 107);
cv::Scalar Color::orange(0, 165, 255);
cv::Scalar Color::orangered(0, 69, 255);
cv::Scalar Color::orchid(214, 112, 218);
cv::Scalar Color::palegoldenrod(170, 232, 238);
cv::Scalar Color::palegreen(152, 251, 152);
cv::Scalar Color::paleturquoise(238, 238, 175);
cv::Scalar Color::palevioletred(147, 112, 219);
cv::Scalar Color::papayawhip(213, 239, 255);
cv::Scalar Color::peachpuff(185, 218, 255);
cv::Scalar Color::peru(63, 133, 205);
cv::Scalar Color::pink(203, 192, 255);
cv::Scalar Color::plum(221, 160, 221);
cv::Scalar Color::powderblue(230, 224, 176);
cv::Scalar Color::purple(128, 0, 128);
cv::Scalar Color::red(0, 0, 255);
cv::Scalar Color::rosybrown(143, 143, 188);
cv::Scalar Color::royalblue(225, 105, 65);
cv::Scalar Color::saddlebrown(19, 69, 139);
cv::Scalar Color::salmon(114, 128, 250);
cv::Scalar Color::sandybrown(96, 164, 244);
cv::Scalar Color::seagreen(87, 139, 46);
cv::Scalar Color::seashell(238, 245, 255);
cv::Scalar Color::sienna(45, 82, 160);
cv::Scalar Color::silver(192, 192, 192);
cv::Scalar Color::skyblue(235, 206, 135);
cv::Scalar Color::slateblue(205, 90, 106);
cv::Scalar Color::slategray(144, 128, 112);
cv::Scalar Color::slategrey(144, 128, 112);
cv::Scalar Color::snow(250, 250, 255);
cv::Scalar Color::springgreen(127, 255, 0);
cv::Scalar Color::steelblue(180, 130, 70);
cv::Scalar Color::tan(140, 180, 210);
cv::Scalar Color::teal(128, 128, 0);
cv::Scalar Color::thistle(216, 191, 216);
cv::Scalar Color::tomato(71, 99, 255);
cv::Scalar Color::turquoise(208, 224, 64);
cv::Scalar Color::violet(238, 130, 238);
cv::Scalar Color::wheat(179, 222, 245);
cv::Scalar Color::white(255, 255, 255);
cv::Scalar Color::whitesmoke(245, 245, 245);
cv::Scalar Color::yellow(0, 255, 255);
cv::Scalar Color::yellowgreen(50, 205, 154);
//In the header file add:
class Color
{
public:
static cv::Scalar ColorBlue;
static cv::Scalar ColorRed;
static cv::Scalar ColorGreen;
static cv::Scalar ColorWhite;
static cv::Scalar ColorBlack;
};
//In the cpp file add:
cv::Scalar Color::ColorBlue(255, 0, 0, 0);
cv::Scalar Color::ColorRed(0, 255, 0, 0);
cv::Scalar Color::ColorGreen(0, 0, 255, 0);
cv::Scalar Color::ColorWhite(255, 255, 255, 0);
cv::Scalar Color::ColorBlack(0, 0, 0, 0);
opencv doesn't create images with a color, easiest way is either a fill or just draw a filled rectangle with the chosen color.
See https://docs.opencv.org/trunk/dc/da5/tutorial_py_drawing_functions.html
There isn't (AFAIK) a function to return the color name, easiest way is to get a list of colors from somewhere and check the RGB values against the pixel. If you need a closest rather than exact match (rememebr there aren't names for all 244bit colors!) look at HSV color space
Here is a list of official css colors, translated to OpenCV BGR Scalar:
Just put in colors.h and never again worry about BGR - RGB - Color-Name translation..
#define COLORS_aliceblue Scalar(255,248,240)
#define COLORS_antiquewhite Scalar(215,235,250)
#define COLORS_aqua Scalar(255,255,0)
#define COLORS_aquamarine Scalar(212,255,127)
#define COLORS_azure Scalar(255,255,240)
#define COLORS_beige Scalar(220,245,245)
#define COLORS_bisque Scalar(196,228,255)
#define COLORS_black Scalar(0,0,0)
#define COLORS_blanchedalmond Scalar(205,235,255)
#define COLORS_blue Scalar(255,0,0)
#define COLORS_blueviolet Scalar(226,43,138)
#define COLORS_brown Scalar(42,42,165)
#define COLORS_burlywood Scalar(135,184,222)
#define COLORS_cadetblue Scalar(160,158,95)
#define COLORS_chartreuse Scalar(0,255,127)
#define COLORS_chocolate Scalar(30,105,210)
#define COLORS_coral Scalar(80,127,255)
#define COLORS_cornflowerblue Scalar(237,149,100)
#define COLORS_cornsilk Scalar(220,248,255)
#define COLORS_crimson Scalar(60,20,220)
#define COLORS_cyan Scalar(255,255,0)
#define COLORS_darkblue Scalar(139,0,0)
#define COLORS_darkcyan Scalar(139,139,0)
#define COLORS_darkgoldenrod Scalar(11,134,184)
#define COLORS_darkgray Scalar(169,169,169)
#define COLORS_darkgreen Scalar(0,100,0)
#define COLORS_darkgrey Scalar(169,169,169)
#define COLORS_darkkhaki Scalar(107,183,189)
#define COLORS_darkmagenta Scalar(139,0,139)
#define COLORS_darkolivegreen Scalar(47,107,85)
#define COLORS_darkorange Scalar(0,140,255)
#define COLORS_darkorchid Scalar(204,50,153)
#define COLORS_darkred Scalar(0,0,139)
#define COLORS_darksalmon Scalar(122,150,233)
#define COLORS_darkseagreen Scalar(143,188,143)
#define COLORS_darkslateblue Scalar(139,61,72)
#define COLORS_darkslategray Scalar(79,79,47)
#define COLORS_darkslategrey Scalar(79,79,47)
#define COLORS_darkturquoise Scalar(209,206,0)
#define COLORS_darkviolet Scalar(211,0,148)
#define COLORS_deeppink Scalar(147,20,255)
#define COLORS_deepskyblue Scalar(255,191,0)
#define COLORS_dimgray Scalar(105,105,105)
#define COLORS_dimgrey Scalar(105,105,105)
#define COLORS_dodgerblue Scalar(255,144,30)
#define COLORS_firebrick Scalar(34,34,178)
#define COLORS_floralwhite Scalar(240,250,255)
#define COLORS_forestgreen Scalar(34,139,34)
#define COLORS_fuchsia Scalar(255,0,255)
#define COLORS_gainsboro Scalar(220,220,220)
#define COLORS_ghostwhite Scalar(255,248,248)
#define COLORS_gold Scalar(0,215,255)
#define COLORS_goldenrod Scalar(32,165,218)
#define COLORS_gray Scalar(128,128,128)
#define COLORS_green Scalar(0,128,0)
#define COLORS_greenyellow Scalar(47,255,173)
#define COLORS_grey Scalar(128,128,128)
#define COLORS_honeydew Scalar(240,255,240)
#define COLORS_hotpink Scalar(180,105,255)
#define COLORS_indianred Scalar(92,92,205)
#define COLORS_indigo Scalar(130,0,75)
#define COLORS_ivory Scalar(240,255,255)
#define COLORS_khaki Scalar(140,230,240)
#define COLORS_lavender Scalar(250,230,230)
#define COLORS_lavenderblush Scalar(245,240,255)
#define COLORS_lawngreen Scalar(0,252,124)
#define COLORS_lemonchiffon Scalar(205,250,255)
#define COLORS_lightblue Scalar(230,216,173)
#define COLORS_lightcoral Scalar(128,128,240)
#define COLORS_lightcyan Scalar(255,255,224)
#define COLORS_lightgoldenrodyellow Scalar(210,250,250)
#define COLORS_lightgray Scalar(211,211,211)
#define COLORS_lightgreen Scalar(144,238,144)
#define COLORS_lightgrey Scalar(211,211,211)
#define COLORS_lightpink Scalar(193,182,255)
#define COLORS_lightsalmon Scalar(122,160,255)
#define COLORS_lightseagreen Scalar(170,178,32)
#define COLORS_lightskyblue Scalar(250,206,135)
#define COLORS_lightslategray Scalar(153,136,119)
#define COLORS_lightslategrey Scalar(153,136,119)
#define COLORS_lightsteelblue Scalar(222,196,176)
#define COLORS_lightyellow Scalar(224,255,255)
#define COLORS_lime Scalar(0,255,0)
#define COLORS_limegreen Scalar(50,205,50)
#define COLORS_linen Scalar(230,240,250)
#define COLORS_magenta Scalar(255,0,255)
#define COLORS_maroon Scalar(0,0,128)
#define COLORS_mediumaquamarine Scalar(170,205,102)
#define COLORS_mediumblue Scalar(205,0,0)
#define COLORS_mediumorchid Scalar(211,85,186)
#define COLORS_mediumpurple Scalar(219,112,147)
#define COLORS_mediumseagreen Scalar(113,179,60)
#define COLORS_mediumslateblue Scalar(238,104,123)
#define COLORS_mediumspringgreen Scalar(154,250,0)
#define COLORS_mediumturquoise Scalar(204,209,72)
#define COLORS_mediumvioletred Scalar(133,21,199)
#define COLORS_midnightblue Scalar(112,25,25)
#define COLORS_mintcream Scalar(250,255,245)
#define COLORS_mistyrose Scalar(225,228,255)
#define COLORS_moccasin Scalar(181,228,255)
#define COLORS_navajowhite Scalar(173,222,255)
#define COLORS_navy Scalar(128,0,0)
#define COLORS_oldlace Scalar(230,245,253)
#define COLORS_olive Scalar(0,128,128)
#define COLORS_olivedrab Scalar(35,142,107)
#define COLORS_orange Scalar(0,165,255)
#define COLORS_orangered Scalar(0,69,255)
#define COLORS_orchid Scalar(214,112,218)
#define COLORS_palegoldenrod Scalar(170,232,238)
#define COLORS_palegreen Scalar(152,251,152)
#define COLORS_paleturquoise Scalar(238,238,175)
#define COLORS_palevioletred Scalar(147,112,219)
#define COLORS_papayawhip Scalar(213,239,255)
#define COLORS_peachpuff Scalar(185,218,255)
#define COLORS_peru Scalar(63,133,205)
#define COLORS_pink Scalar(203,192,255)
#define COLORS_plum Scalar(221,160,221)
#define COLORS_powderblue Scalar(230,224,176)
#define COLORS_purple Scalar(128,0,128)
#define COLORS_red Scalar(0,0,255)
#define COLORS_rosybrown Scalar(143,143,188)
#define COLORS_royalblue Scalar(225,105,65)
#define COLORS_saddlebrown Scalar(19,69,139)
#define COLORS_salmon Scalar(114,128,250)
#define COLORS_sandybrown Scalar(96,164,244)
#define COLORS_seagreen Scalar(87,139,46)
#define COLORS_seashell Scalar(238,245,255)
#define COLORS_sienna Scalar(45,82,160)
#define COLORS_silver Scalar(192,192,192)
#define COLORS_skyblue Scalar(235,206,135)
#define COLORS_slateblue Scalar(205,90,106)
#define COLORS_slategray Scalar(144,128,112)
#define COLORS_slategrey Scalar(144,128,112)
#define COLORS_snow Scalar(250,250,255)
#define COLORS_springgreen Scalar(127,255,0)
#define COLORS_steelblue Scalar(180,130,70)
#define COLORS_tan Scalar(140,180,210)
#define COLORS_teal Scalar(128,128,0)
#define COLORS_thistle Scalar(216,191,216)
#define COLORS_tomato Scalar(71,99,255)
#define COLORS_turquoise Scalar(208,224,64)
#define COLORS_violet Scalar(238,130,238)
#define COLORS_wheat Scalar(179,222,245)
#define COLORS_white Scalar(255,255,255)
#define COLORS_whitesmoke Scalar(245,245,245)
#define COLORS_yellow Scalar(0,255,255)
#define COLORS_yellowgreen Scalar(50,205,154)
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