[OpenCV] Convert RGB to Web-Safe Colors

Convert RGB to Web-Safe Colors

	#include <iostream>
	#include <opencv2/opencv.hpp>
	#include <opencv2/highgui/highgui.hpp>
	using namespace cv;
	int convertToWebSafe(int color) {
	//0 51 102 153 204 255
	// 25 76 127 178 229
	if (color >= 229)
	return 255;
	else if (color >= 178)
	return 204;
	else if (color >= 127)
	return 153;
	else if (color >= 76)
	return 102;
	else if (color >= 25)
	return 51;
	else
	return 0;
	}
	int main()
	{
	Mat3b image= imread("C:/img/Fig0608(RGB-full-color-cube).tif");//image
	Mat3b srcImage = imread("C:/img/Fig0608(RGB-full-color-cube).tif");//src image
	int i, j;
	int r, g, b;
	printf("%d,%d",image.size().width, image.size().height);
	for (i = 0; i < image.size().width;i++) { //access each pixel
	for (j = 0; j < image.size().height;j++) {
	b = image.at<cv::Vec3b>(j, i)[0]; //b
	g = image.at<cv::Vec3b>(j, i)[1]; //g
	r = image.at<cv::Vec3b>(j, i)[2]; //r
	//
	image.at<cv::Vec3b>(j, i)[0] = convertToWebSafe(b);
	image.at<cv::Vec3b>(j, i)[1] = convertToWebSafe(g);
	image.at<cv::Vec3b>(j, i)[2] = convertToWebSafe(r);
	//printf("%d", image.at<cv::Vec3b>(j, i)[0]);
	}
	}
	imshow("web safe", image);
	imshow("src", srcImage);
	waitKey(0);
	return 0;
	}

view raw convert_rgb_to_web_safe_color.c hosted with ❤ by GitHub