This extension for UIImage fixes image orientation for cases when the iamge was captured using AVFoundation in landscape interface orientation. Swift 3

UIImage+LandscapeCameraCaptureOrientationFix.swift

    
    func landscapeCameraCaptureOrientationFix(for interfaceOrinetation: UIInterfaceOrientation) -> UIImage? {
        var imageOrientation: UIImageOrientation!
        var shouldOrient: Bool = false
        
        if interfaceOrinetation == .landscapeRight {
            imageOrientation = UIImageOrientation.left
            shouldOrient = !shouldOrient
        } else if interfaceOrinetation == .landscapeLeft {
            imageOrientation = UIImageOrientation.right
            shouldOrient = !shouldOrient
        }
        if shouldOrient, let cgimage = self.cgImage {
            let image = UIImage(cgImage: cgimage, scale: self.scale, orientation: imageOrientation)
            return image
        }
        
        return self
    }
}