on wavelet technology. Its architecture lends itself to a wide range of uses from portable digital cameras through to advanced pre-press, medical imaging and other key sectors.
JPEG 2000 refers to all parts of the standard. Below is the list of current parts that make up the complete JPEG 2000 suite of standards. Recently, a new activity "High-Throughput JPEG 2000 (HTJ2K)" has been initiated.
Part 1, Core coding system
As its name suggests, Part 1 defines the core of JPEG 2000. This includes the syntax of the JPEG 2000 codestream and the necessary steps involved in encoding and decoding JPEG 2000 images.
This Part also defines a basic file format called JP2. This allows metadata such as colour space information (which is essential for accurate rendering) to be included with a JPEG 2000 codestream in an interoperable way. JP2 uses an extensible architecture shared with the other file formats in the JPEG 2000 family defined in later parts of the standard.
Furthermore, it includes guidelines and examples, a bibliography of technical references, and a list of companies from whom patent statements have been received by ISO. JPEG 2000 was developed with the intention that Part 1 could be implemented without the payment of licence fees or royalties, and identified patent holders have waived their rights toward this end. However, the JPEG committee cannot make a formal guarantee, and it remains the responsibility of the implementer to ensure that no patents are infringed.
Part 1 became an International Standard (ISO/IEC 15444-1) in December 2000 and is available for download from ITU-T as Recommendation T.800.