The popular Halide camera app has been updated to add Portrait Mode support for pets and other objects on the iPhone XR.In a post explaining how the depth camera works on the single lens iPhone XR, Halide notes that Apple uses machine learning to create a Portrait Effects Matte:
With PEM, Apple is feeding the 2D color image and 3D depth map into a machine learning system, and the software guesses what the high-resolution matte should look like. It figures out which parts of the image are outlines of people, and even takes extra care to preserve individual hairs, eyeglasses, and other parts that often go missing when a portrait blurring effect is applied.
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