Use the opencv stretch image to expand the resolution sample

Using OPENCV image processing library, stretch the image to expand the resolution

//Zoom image file
#include <opencv2/opencv.hpp>
using namespace std;
//Hide console window
#pragma comment(linker, "/subsystem:"windows" /entry:"mainCRTStartup"")
int main()
{
 const char *pstrImageName = "airplane.jpg";
 const char *pstrSaveImageName = "airplane Scaling figure .jpg";
 const char *pstrWindowsSrcTitle = " The original image ";
 const char *pstrWindowsDstTitle = " Scaling figure ";

 double fScale = 2;//Zoom multiples
 CvSize czSize; //Target image size

 //Reading an image from a file & NBSP;
 IplImage *pSrcImage = cvLoadImage(pstrImageName, CV_LOAD_IMAGE_UNCHANGED);
 IplImage *pDstImage = NULL; 

 //Calculate the target image size
 czSize.width = pSrcImage->width * fScale;
 czSize.height = pSrcImage->height * fScale;

 //Create the image and scale it
 pDstImage = cvCreateImage(czSize, pSrcImage->depth, pSrcImage->nChannels);
 cvResize(pSrcImage, pDstImage, CV_INTER_AREA);
 
 //Create a window
 cvNamedWindow(pstrWindowsSrcTitle, CV_WINDOW_AUTOSIZE);
 cvNamedWindow(pstrWindowsDstTitle, CV_WINDOW_AUTOSIZE);

 //Displays an image in the specified window
 cvShowImage(pstrWindowsSrcTitle, pSrcImage);
 cvShowImage(pstrWindowsDstTitle, pDstImage);

 //Waiting for key events
 cvWaitKey();

 //Save the picture
 cvSaveImage(pstrSaveImageName, pDstImage);

 cvDestroyWindow(pstrWindowsSrcTitle);
 cvDestroyWindow(pstrWindowsDstTitle);
 cvReleaseImage(&pSrcImage);
 cvReleaseImage(&pDstImage);
 return 0;
}