使用OPENCV图像处理库，拉伸图像扩大分辨率

复制代码 代码如下:

//缩放图像文件

#include <opencv2/opencv.hpp>

using namespace std;

//隐藏控制台窗口

#pragma comment(linker, "/subsystem:"windows" /entry:"mainCRTStartup"")

int main()

{

const char *pstrImageName = "airplane.jpg";

const char *pstrSaveImageName = "airplane缩放图.jpg";

const char *pstrWindowsSrcTitle = "原图";

const char *pstrWindowsDstTitle = "缩放图";

double fScale = 2;//缩放倍数

CvSize czSize;//目标图像尺寸

//从文件中读取图像

IplImage *pSrcImage = cvLoadImage(pstrImageName, CV_LOAD_IMAGE_UNCHANGED);

IplImage *pDstImage = NULL;

//计算目标图像大小

czSize.width = pSrcImage->width * fScale;

czSize.height = pSrcImage->height * fScale;

//创建图像并缩放

pDstImage = cvCreateImage(czSize, pSrcImage->depth, pSrcImage->nChannels);

cvResize(pSrcImage, pDstImage, CV_INTER_AREA);

//创建窗口

cvNamedWindow(pstrWindowsSrcTitle, CV_WINDOW_AUTOSIZE);

cvNamedWindow(pstrWindowsDstTitle, CV_WINDOW_AUTOSIZE);

//在指定窗口中显示图像

cvShowImage(pstrWindowsSrcTitle, pSrcImage);

cvShowImage(pstrWindowsDstTitle, pDstImage);

//等待按键事件

cvWaitKey();

//保存图片

cvSaveImage(pstrSaveImageName, pDstImage);

cvDestroyWindow(pstrWindowsSrcTitle);

cvDestroyWindow(pstrWindowsDstTitle);

cvReleaseImage(&pSrcImage);

cvReleaseImage(&pDstImage);

return 0;

}