opencv 三通道图像转为单通道图像

图像转为单通道图像"/>

opencv 三通道图像转为单通道图像

// Test.cpp : 定义控制台应用程序的入口点。
//#include "stdafx.h"
#include <opencv.hpp>
#include <string>using namespace cv;
using namespace std;int main()
{string path = "D:\\temp\\label\\image3.png";Mat src = imread(path);Mat src8bit = Mat::zeros(Size(src.cols, src.rows), CV_8UC1);float R, G, B;R = 0.299;G = 0.387;B = 0.114;//R = 0.109;//G = 0.387;//B = 0.340;for (int i = 0; i < src.rows; i++){uchar* data = src.ptr<uchar>(i);for (int j = 0; j < src.cols * 3; j = j + 3){int r, g, b, val;r = R * data[j];g = G * data[j + 1];b = B * data[j + 2];val = r + g + b;src8bit.at<uchar>(i, j / 3) = val;}}return 0;
}