《学习opencv》第四章课后习题1

news/2024/7/8 15:35:03 标签: merge, image, null, c

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<code class="language-cpp">本人自己做的：




#include "stdafx.h"
#include<opencv/cv.h>
#include<opencv/highgui.h>

int main()
{
 //a.1从视频中趣图并显示。
 CvCapture* capture = cvCreateFileCapture("C:\\test.avi");
    IplImage* frame= cvQueryFrame( capture );
    if( !frame ) return -1;
 cvNamedWindow("class="tags" href="/tags/IMAGE.html" title=image>imagefromviedo", CV_WINDOW_AUTOSIZE );
    cvShowImage("class="tags" href="/tags/IMAGE.html" title=image>imagefromviedo", frame );

 //a.2将图转换为灰度图
    IplImage* gray=cvCreateImage(cvGetSize(frame),IPL_DEPTH_8U,1);
    cvCvtColor(frame,gray,CV_BGR2GRAY);
 cvNamedWindow("convert2gray", CV_WINDOW_AUTOSIZE );
    cvShowImage("convert2gray", gray );

 //a.3对图像做canny边缘检测
    IplImage* toCanny=cvCreateImage(cvGetSize(frame),IPL_DEPTH_8U,1);
    cvCanny(gray,toCanny,50,150,3);
 cvNamedWindow("Canny",CV_WINDOW_AUTOSIZE);
    cvShowImage("Canny", toCanny);
  
 

 //b.三合一
 IplImage* class="tags" href="/tags/MERGE.html" title=merge>merge=cvCreateImage(cvSize(3*frame->width,frame->height),IPL_DEPTH_8U,3);
    cvSetZero(class="tags" href="/tags/MERGE.html" title=merge>merge);

 CvRect rect1=cvRect(0,0,frame->width,frame->height);
    cvSetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge,rect1);
 frame->nChannels =3;
    cvCopy(frame,class="tags" href="/tags/MERGE.html" title=merge>merge,NULL);
    cvResetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge);

 CvRect rect2=cvRect(frame->width,0,frame->width,frame->height);
    cvSetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge,rect2);
 gray->nChannels =3;
    cvCopy(gray,class="tags" href="/tags/MERGE.html" title=merge>merge,NULL);
    cvResetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge);

 CvRect rect3=cvRect(2*frame->width,0,frame->width,frame->height);
    cvSetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge,rect3);
 toCanny->nChannels =3;
    cvCopy(toCanny,class="tags" href="/tags/MERGE.html" title=merge>merge,NULL);
    cvResetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge);

 //c.加标志
 CvFont textfont = cvFont(10.0,1);  
    cvInitFont(&textfont, CV_FONT_HERSHEY_SIMPLEX, 0.5f, 0.5f, 0, 1);  
    cvPutText(class="tags" href="/tags/MERGE.html" title=merge>merge, "Frame", cvPoint(10,20), &textfont, cvScalar(0,0,255));  
    cvPutText(class="tags" href="/tags/MERGE.html" title=merge>merge, "Gray", cvPoint(frame->width+10,20), &textfont, cvScalar(255,0,0));  
    cvPutText(class="tags" href="/tags/MERGE.html" title=merge>merge, "toCanny", cvPoint(frame->width*2+10, 20), &textfont, cvScalar(0,255,0));  

 cvNamedWindow("class="tags" href="/tags/MERGE.html" title=merge>merge", CV_WINDOW_AUTOSIZE );
    cvShowImage("class="tags" href="/tags/MERGE.html" title=merge>merge", class="tags" href="/tags/MERGE.html" title=merge>merge );

 cvWaitKey(0);

 

    

    cvDestroyWindow("class="tags" href="/tags/MERGE.html" title=merge>merge");
 cvReleaseImage( &class="tags" href="/tags/MERGE.html" title=merge>merge );
    
    cvReleaseCapture( &capture );
    cvDestroyWindow("class="tags" href="/tags/IMAGE.html" title=image>imagefromviedo");
 cvReleaseImage( &frame );

 cvDestroyWindow("convert2gray");
 cvReleaseImage( &gray );
    
 
 cvDestroyWindow("Canny");
 cvReleaseImage( &toCanny );
    
 return 0;
 /*//a.1从视频中趣图并显示。
 CvCapture* capture = cvCreateFileCapture("c:\\test.avi");
    IplImage* frame= cvQueryFrame( capture );
    if( !frame ) return -1;
 cvNamedWindow("class="tags" href="/tags/IMAGE.html" title=image>imagefromviedo", CV_WINDOW_AUTOSIZE );
    cvShowImage("class="tags" href="/tags/IMAGE.html" title=image>imagefromviedo", frame );

 //a.2将图转换为灰度图
    IplImage* gray=cvCreateImage(cvGetSize(frame),IPL_DEPTH_8U,1);
 IplImage* class="tags" href="/tags/IMAGE.html" title=image>image_gray=cvCreateImage(cvGetSize(frame),IPL_DEPTH_8U,3);//用于合并显示的灰度图
    cvCvtColor(frame,gray,CV_BGR2GRAY);
 cvCvtColor(gray,class="tags" href="/tags/IMAGE.html" title=image>image_gray,CV_GRAY2BGR);
 cvNamedWindow("convert2gray", CV_WINDOW_AUTOSIZE );
    cvShowImage("convert2gray", class="tags" href="/tags/IMAGE.html" title=image>image_gray );

 //a.3对图像做canny边缘检测
    IplImage* toCanny=cvCreateImage(cvGetSize(frame),IPL_DEPTH_8U,1);
 IplImage* class="tags" href="/tags/IMAGE.html" title=image>image_toCanny=cvCreateImage(cvGetSize(frame),IPL_DEPTH_8U,3);//用于合并显示的Canny边缘检测图
 
    cvCanny(gray,toCanny,50,150,3);
 cvCvtColor(toCanny,class="tags" href="/tags/IMAGE.html" title=image>image_toCanny,CV_GRAY2BGR);
 cvNamedWindow("Canny",CV_WINDOW_AUTOSIZE);
    cvShowImage("Canny",class="tags" href="/tags/IMAGE.html" title=image>image_toCanny);
  
 

 //b.三合一
 IplImage* class="tags" href="/tags/MERGE.html" title=merge>merge=cvCreateImage(cvSize(3*frame->width,frame->height),IPL_DEPTH_8U,3);
    cvSetZero(class="tags" href="/tags/MERGE.html" title=merge>merge);

 CvRect rect1=cvRect(0,0,frame->width,frame->height);
    cvSetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge,rect1);
    cvCopy(frame,class="tags" href="/tags/MERGE.html" title=merge>merge,NULL);
    cvResetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge);

 CvRect rect2=cvRect(frame->width,0,frame->width,frame->height);
    cvSetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge,rect2);
    cvCopy(class="tags" href="/tags/IMAGE.html" title=image>image_gray,class="tags" href="/tags/MERGE.html" title=merge>merge,NULL);
    cvResetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge);

 CvRect rect3=cvRect(2*frame->width,0,frame->width,frame->height);
    cvSetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge,rect3);
    cvCopy(class="tags" href="/tags/IMAGE.html" title=image>image_toCanny,class="tags" href="/tags/MERGE.html" title=merge>merge,NULL);
    cvResetImageROI(class="tags" href="/tags/MERGE.html" title=merge>merge);

 cvNamedWindow("class="tags" href="/tags/MERGE.html" title=merge>merge");
 cvShowImage("class="tags" href="/tags/MERGE.html" title=merge>merge",class="tags" href="/tags/MERGE.html" title=merge>merge);

 cvWaitKey(0);

   
    cvReleaseCapture( &capture );
 cvReleaseImage( &frame );
    cvDestroyWindow("class="tags" href="/tags/IMAGE.html" title=image>imagefromviedo");

 cvReleaseImage( &gray );
 cvReleaseImage( &class="tags" href="/tags/IMAGE.html" title=image>image_gray );
    cvDestroyWindow("convert2gray");

 cvReleaseImage( &toCanny );
 cvReleaseImage( &class="tags" href="/tags/IMAGE.html" title=image>image_toCanny );
    cvDestroyWindow("Canny");

 cvReleaseImage( &class="tags" href="/tags/MERGE.html" title=merge>merge );
    cvDestroyWindow("class="tags" href="/tags/MERGE.html" title=merge>merge");
 return 0;*/
}

 



code>

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