How to directly rotate CVImageBuffer image in IOS 4 without converting to UIImage?

Question

I am using OpenCV 2.2 on the iPhone to detect faces. I\'m using the IOS 4\'s AVCaptureSession to get access to the camera stream, as seen in the code that follows.

Answer 1

Maybe easier to just set the video orientation the way you want:

connection.videoOrientation = AVCaptureVideoOrientationPortrait

This way you don't need to do that rotation gimmick at all