首页 / 操作系统 / Linux / OpenCV3读取、写入和保存图像
需要说明的是在OpenCV3中已经将imread()和imwrite()函数转移到imgcodecs模块中,因此读写图像时,需要包含imgcodecs.hpp头文件,但是highgui.hpp头文件中已经包含了该头文件,因此不用再显式包含了。#include <iostream>
#include <string>
using namespace std;// OpenCV includes
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
using namespace cv;int main(int argc, const char** argv)
{
// Read images
Mat color = imread("../images/eating.jpg");
Mat gray = imread("../images/eating.jpg", 0); // Write images
imwrite("gray.jpg", gray); // Get same pixel with opencv function
int myRow = color.cols - 1;
int myCol = color.rows - 1;
Vec3b pixel = color.at<Vec3b>(myRow, myCol);
cout << "Pixel Value (B, G, R): ("
<< (int)pixel[0] << ", "
<< (int)pixel[1] << ", "
<< (int)pixel[2] << ")" << endl; // Show images
imshow("Color Image", color);
imshow("Gray Image", gray); // Wait for any key
waitKey(0);
return 0;
}显示的图片效果如下:OpenCV官方教程中文版(For Python) PDF http://www.linuxidc.com/Linux/2015-08/121400.htmUbuntu Linux下安装OpenCV2.4.1所需包 http://www.linuxidc.com/Linux/2012-08/68184.htmUbuntu 12.04 安装 OpenCV2.4.2 http://www.linuxidc.com/Linux/2012-09/70158.htmCentOS下OpenCV无法读取视频文件 http://www.linuxidc.com/Linux/2011-07/39295.htmUbuntu 12.04下安装OpenCV 2.4.5总结 http://www.linuxidc.com/Linux/2013-06/86704.htmUbuntu 10.04中安装OpenCv2.1九步曲 http://www.linuxidc.com/Linux/2010-09/28678.htm基于QT和OpenCV的人脸识别系统 http://www.linuxidc.com/Linux/2011-11/47806.htm[翻译]Ubuntu 14.04, 13.10 下安装 OpenCV 2.4.9 http://www.linuxidc.com/Linux/2014-12/110045.htmOpenCV的详细介绍:请点这里
OpenCV的下载地址:请点这里本文永久更新链接地址:http://www.linuxidc.com/Linux/2016-05/131619.htm