Baker Botts L.L.P.
Methods and systems for image data compression
In one embodiment, a computing system may access a first set of pixel values of an image having a bit depth. The first set of pixel values includes a first subset and a second subset. Each pixel value in the first subset is less than each pixel value in the second subset. The computing system may further determine an overflow range based on a pixel value overflow associated with the bit depth. The overflow range covers a second set of pixel values, which includes (1) the second subset and (2) an overflow representation of the first subset. In response to determining that the overflow range is less than a range covering the first set of pixel values, the computer system may then generate quantization levels corresponding to the overflow range and associate each pixel value of the second set of pixel values with one of the quantization levels.
Facebook Technologies, LLC
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Zhi Seokhoon Cheng
Zhou Kim Chang