Xcode上利用opencv: (一)显示图片,缩小图像

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补充: xcode上配置opencv请看:
https://blog.csdn.net/qq_37486501/article/details/81387689

Xcode上opencv显示图片

int main( )
{
    //读入图像
    //原图像
    Mat srcImage=imread("/Users/liyixin/Pictures/tree.jpg");

    //创建窗口
    namedWindow("FomalSize",CV_WINDOW_NORMAL);

    //显示原图
    imshow("FomalSize",srcImage);
    waitKey(0);
}

Xcode上opencv缩小图像

#include <iostream>
#include <opencv2/opencv.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv/cvaux.hpp>
#include <fstream>
using namespace std;
using namespace cv;
int main( )
{
 //读入图像
    //原图像
    Mat srcImage=imread("/Users/..../Pictures/tree.jpg");
    //修改尺寸后的图像
    Mat samImage; samImage=srcImage;

    //创建窗口
    //namedWindow("FomalSize",CV_WINDOW_NORMAL);
    //namedWindow("Smallsize",CV_WINDOW_NORMAL);

    //显示原图
    //imshow("FomalSize",srcImage);

    //尺寸调整
    resize(srcImage,samImage,Size(srcImage.cols/8,srcImage.rows/8),0,0,INTER_LINEAR);

    //显示尺寸调整后的图
    imshow("Smallsize", samImage);
    waitKey(0);
}

推荐两个博客:(写得很好,可以借鉴~)
https://blog.csdn.net/poem_qianmo/article/details/22745559
https://blog.csdn.net/MoreWindows/article/details/8239560