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POCant save image using OpenCV
primarykey
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9962738
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AcceptedAnswerId
0
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2
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4
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CreationDate
2012-04-01T07:43:21.607
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0
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2013-02-18T08:53:30.507
LastEditDate
2012-04-01T16:38:56.057
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1288
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0
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1
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-1
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1905
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I was trying to save images from a video file but It couldn't save any image in my hard drive. I compiled following program without errors. <pre><code>#include <stdio.h> #include <stdlib.h> #include <cv.h> #include <cxcore.h> #include <highgui.h> int main(int argc, char* argv[]) { int c=1; IplImage* img=0; IplImage* small; IplImage* small=new IplImage(inputArray); char buffer[1000]; CvCapture* cv_cap=cvCaptureFromFile("test.avi"); cvNamedWindow("Video",CV_WINDOW_AUTOSIZE); while(1) { img=cvQueryFrame(cv_cap); cvShowImage("Video",img); small = cvCreateImage(cvSize(img->width/2,img->height/2), 8, 3); sprintf(buffer,"C:/image%u.jpg",c); c++; if (cvWaitKey(100)== 27) break; } cvDestroyWindow("Video"); return 0; } </code></pre> I am using a 2.3.1 openCV library and Visual Studio 2010. How can I save the image from a video file? <hr> I have also tried this code,above program code are something wrong.please see following program code.After i adding following code ,also there was a same problem. <pre><code> cvSaveImage(buffer,img); </code></pre> Corrected program is shown below.please see this and tell me what i did wrong.but there is not compile error.after i run the program it doesn't save any image. <pre><code> #include"stdafx.h" #include<cv.h> #include<highgui.h> #include<cxcore.h> int main(int argc, char* argv[]) { int c=1; IplImage* img=0; char buffer[1000]; CvCapture* cv_cap=cvCaptureFromCAM(-1); cvNamedWindow("Video",CV_WINDOW_AUTOSIZE); while(1) { img=cvQueryFrame(cv_cap); cvShowImage("Video",img); sprintf(buffer,"D:/image%u.jpg",c); cvSaveImage(buffer,img); c++; if (cvWaitKey(100)== 27) break; } cvDestroyWindow("Video"); return 0; } </code></pre> can you tell me how to save a image .above program doesn't save any images.please give me your suggestions.thank you.
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<c++><opencv>
Title
Cant save image using OpenCV
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 POCant save image using OpenCV
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