The purpose of ITU-T Rec. T.812 ISO/IEC 15444-13 is to define a normative entry level JPEG 2000 encoder providing one or more optional complete encoding paths that use various features defined in the JPEG 2000 specifications. This Recommendation International Standard provides for an entry-level encoder that can be used in various applications with guidelines on its use, based on patents for which royalty and license fee free declarations are available. This Recommendation International Standard defines a set of lossless (bit-preserving) and lossy compression methods for coding bi-level, continuous-tone greyscale, palletized colour, or continuous-tone colour digital still images.