createNonInterpolatedUIImageFromCIImage flips the image

[kauffmanelia]

I just started using this guide on how to generate QR codes for my app and it mostly works, but I notice that the -createNonInterpolatedUIImageFromCIImage method posted here actually flips the given image vertically. I verified this by comparing it to UIImage +imageWithCIImage, which gave me an interpolated image that was the right orientation. Adding a line
scaledImage = [UIImage imageWithCGImage:scaledImage.CGImage scale:1.0 orientation:UIImageOrientationDownMirrored];
into the end of the method flips it back to vertical.

[WingedToaster]

A better way of doing this is probably within the existing CGContext. Should add these 2 lines before CGContextDrawImage(context, CGContextGetClipBoundingBox(context), cgImage);

CGContextTranslateCTM(context, 0, size);
CGContextScaleCTM(context, 1.0, -1.0);