scope:

This Recommendation International Standard defines a set of lossless (bit-preserving) and nearly lossless (where the error for each reconstructed sample is bounded by a predefined value) compression methods for coding continuous-tone (including bi-level), gray-scale, or colour digital still images. This Recommendation/Internation Standard: -specifies extensions (including arithmetic coding, extensions of near lossless coding, extensions of prediction and extensions of Golomb coding) to processes for converting source image data to compressed image data;-specifies extensions to processes for converting compressed image data to reconstructed image data including an extension for sample tranformation for inverse colour transforms;-specifies coded representations for compressed image data;-provides guidance on how to implement these processes in practice.