message: Fixed height assignment
diff: height = CVPixelBufferGetHeight(self.CIImage.pixelBuffer);
  } else if (self.CIImage.CGImage) {
  width = CGImageGetWidth(self.CIImage.CGImage);
  - height = CGImageGetWidth(self.CIImage.CGImage);
  + height = CGImageGetHeight(self.CIImage.CGImage);
  }
  return CGSizeMake(width, height);
  }
  