CIFilter has changed UIImage Aspect Ratio - SWIFT

Question

I have implemented a CIFilter to profileImages in my iOS app. I have added orientation to prevent pixelation but I am suffering from the aspect ratio "ScaleAspectFill" not being applied to the images. The same images in colour have the perfect aspect ratio...i.e. when I just have:

self.p1ProfilePic.image = p1Img

1. I have specified exact height and widths for the profile images in Storyboard.
2. I have tried adding programmatically the .contentMode as .ScaleAspectFill but with no effect whatsoever.

3. What am I missing here? CGRect?

           let originalImageP1 = CIImage(image: p1Img!)
           let filter = CIFilter(name: "CIPhotoEffectTonal")
           filter!.setDefaults()
           filter!.setValue(originalImageP1, forKey: kCIInputImageKey)
           let outputImage = filter!.outputImage
           self.p1ProfilePic.image = UIImage(CIImage: outputImage!, scale: UIScreen.mainScreen().scale, orientation: .Up)
   

Answer 1

Creating a UIImage from a CIImage with your technique creates images that don't respect contentMode. Try this instead:

let ciContext = CIContext()
let cgImage = ciContext.createCGImage(filter.outputImage!,
    fromRect: filter.outputImage!.extent)

self.p1ProfilePic.image = UIImage(CGImage: cgImage)

Cheers!

Simon