Create AVSemanticSegmentationMatte from image data seems to leak memory

I compared with several options to use get auxiliary images from CIImage.

These options leak AVSemanticSegmentationMatte when using debug memory graph

CIImage.init(data: data, options: [.auxiliarySemanticSegmentationSkinMatte: true])

CIImage.init(data: data, options: [.auxiliarySemanticSegmentationHairMatte: true])

CIImage.init(data: data, options: [.auxiliarySemanticSegmentationTeethMatte: true])

Other options .auxiliaryDisparity and .auxiliaryPortraitEffectsMatte do not leak AVDepthData nor AVPortraitEffectsMatte.

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kobunketsu
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  • I am using Xcode13.1 with iOS15.0, code is tested on photos shot with iPhoneXS, using objc and swift, both have this memory leak issue.

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    kobunketsu

  • Does it still exist after you released the CIContext you used for rendering? The context usually caches some intermediate images and objects to speed up consecutive render calls.

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    FrankSchlegel
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