CPC G06T 9/40 (2013.01) [G06N 7/01 (2023.01); G06T 3/40 (2013.01); H04N 19/13 (2014.11); H04N 19/186 (2014.11); H04N 19/1883 (2014.11); H04N 19/96 (2014.11)] | 20 Claims |
1. In a digital medium environment for compressing digital images, a method implemented by a computing device, the method comprising:
receiving, by the computing device, digital image data describing pixels of a digital image;
grouping, by the computing device, first differences between values of the pixels and first prediction values of the pixels into context groups;
determining, by the computing device, a pixel predictor for each of the context groups based on a compression criterion;
generating, by the computing device, second prediction values of the pixels using the determined pixel predictor for pixels corresponding to the first differences included in each of the context groups; and
grouping, by the computing device, second differences between the values of the pixels and the second prediction values of the pixels into different context groups.
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