1f

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage!, editingInfo: [NSObject : AnyObject]!) {
        imageView.image = image
        let size = CGSizeApplyAffineTransform(image.size, CGAffineTransformMakeScale(0.5, 0.5))
        let hasAlpha = false
        let scale: CGFloat = 0.0 // Automatically use scale factor of main screen

        UIGraphicsBeginImageContextWithOptions(size, !hasAlpha, scale)
        image.drawInRect(CGRect(origin: CGPointZero, size: size))

        let scaledImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        dismissViewControllerAnimated(true, completion: nil)
    }