c++ - How to close camera (OpenCv Beaglebone) -

good day,

i trying figure out how close camera on beaglebone in opencv. have tried numerous commands such release(&camera) none exist , camera continues stay on when don't want to.

videocapture capture(0); capture.set(cv_cap_prop_frame_width,320); capture.set(cv_cap_prop_frame_height,240); if(!capture.isopened()){      cout << "failed connect camera." << endl; } mat frame, edges, cont;  while(1){     cout<<sending<<endl;     if(sending){         for(int i=0; i<frames; i++){             capture >> frame;             if(frame.empty()){             cout << "failed capture image" << endl;             return 0;             }             cvtcolor(frame, edges, cv_bgr2gray); 

code this, @ end of loop, want close camera, of course still stays open

the camera deinitialized automatically in videocapture destructor.

check example opencv docu:

int main(int, char**) {     videocapture cap(0); // open default camera     if(!cap.isopened())  // check if succeeded         return -1;      mat edges;     namedwindow("edges",1);     for(;;)     {         mat frame;         cap >> frame; // new frame camera         cvtcolor(frame, edges, cv_bgr2gray);         gaussianblur(edges, edges, size(7,7), 1.5, 1.5);         canny(edges, edges, 0, 30, 3);         imshow("edges", edges);         if(waitkey(30) >= 0) break;     }     // camera deinitialized automatically in videocapture destructor     return 0; } 

also

cvqueryframe

grabs , returns frame camera or file

iplimage* cvqueryframe( cvcapture* capture );

capture video capturing structure.

the function cvqueryframe grabs frame camera or video file, decompresses , > returns it. function combination of cvgrabframe , cvretrieveframe in 1 > call. the returned image should not released or modified user.

also check: http://derekmolloy.ie/beaglebone/beaglebone-video-capture-and-image-processing-on-embedded-linux-using-opencv/

i hope works you. best of luck.