I am using a MacBook Pro OS X version 10.12.1 with an external USB Web Camera. If I look at an image in photo booth with the external web camera the image is correct. However when I capture frames from the same web cam and display it, the image shows up rotated 90 degrees clockwise. What am I doing wrong ?
Here is the code :
CvCapture *capture = 0;
capture = cvCaptureFromCAM(1); // 1 = web cam , -1 = autodetect , 0 = default
if (!capture)
{
fprintf(stderr, "!!! Cannot open initialize webcam!\n" );
return;
}
// Create a window for the video
cvNamedWindow("Frame Captured", CV_WINDOW_AUTOSIZE);
IplImage* frame = 0;
char key = 0;
while (key != 27) // ESC
{
frame = cvQueryFrame(capture);
if(!frame)
{
fprintf( stderr, "!!! cvQueryFrame failed!\n" );
break;
}
// Display frame
cvShowImage("Frame Captured", frame);
// Exit when user press ESC
key = cvWaitKey(10);
}
// Free memory
cvDestroyWindow("result");
cvReleaseCapture(&capture);
}
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