Image rotating after CIFilter

Question

I\'m applying a CIFilter to a portrait image. For some reason, it gets rotated 90 clockwise. How can I fix this? My code is below

var imgOrientation = oImage         


        

Answer 1

I'm going to guess that the problem is this line:

var newImage = UIImage(CIImage:outputImage, scale:imgScale, orientation:imgOrientation)

That is not how you render a filter into a UIImage. What you want to do is call CIContext(options: nil) to get a CIContext, and then send that CIContext the message createCGImage:fromRect: to get a CGImage. Now turn that CGImage into a UIImage, and, as you do so, you can apply your orientation.