I have the below simple code for CIPersonSegmentation
if let image = UIImage(named: "demo9"), let editted = applyPersonFilter(to: image) {
imageView.image = editted
}
func applyPersonFilter(to image: UIImage) -> UIImage? {
guard let ciImage = CIImage(image: image) else { return nil }
let context = CIContext(options: nil)
let filter = CIFilter(name: "CIPersonSegmentation", parameters: [
kCIInputImageKey: ciImage,
"inputQualityLevel": 1.0
])
guard let outputImage = filter?.outputImage else {
return nil
}
print("outputImage: \(outputImage.extent)")
guard let cgImage = context.createCGImage(outputImage, from: outputImage.extent) else { return nil }
return UIImage(cgImage: cgImage)
}
This simply crashes at createCGImage with:
Thread 1: EXC_BAD_ACCESS (code=EXC_I386_GPFLT)
Note that the print before context.createCGImage logs (0.0, 0.0, 512.0, 384.0).
If I replace the "CIPersonSegmentation" with some other filter name, then it works fine.
EDIT:
I suspect I may have figured out the problem. I was running the above code on the simulator when it was crashing. Then I came across this article when researching some other image editing:
It says:
"The requests may fail. For example, handler throws an error if you try to run the code on an iOS Simulator:
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