JPEG 2000 is an image coding system that uses state-of-the-art compression techniques based 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.
Source : JPEG – JPEG 2000