ITU-T Recommendations

Recommendation ITU-T T.801 | ISO/IEC 15444-2 defines a set of lossless (bit-preserving) and lossy compression methods for coding continuous-tone, bi-level, grey-scale, colour digital still images, or multi-component images.
This Recommendation | International Standard:
–specifies extended decoding processes for converting compressed image data to reconstructed image data;
–specifies an extended codestream syntax containing information for interpreting the compressed image data;
–specifies an extended file format;
–specifies a container to store image metadata;
–defines a standard set of image metadata;
–provides guidance on extended encoding processes for converting source image data to compressed image data;
–provides guidance on how to implement these processes in practice.
Relative to the second edition of this Recommendation | International Standard, this edition introduces the following changes:
–Support for progression order extensions
This third edition cancels and replaces the second edition (ITU-T T.801 (2021) | ISO/IEC 15444-2:2021), which has been technically revised.