Rec. ITU-T T.800 | ISO/IEC 15444-1 describes an image compression system that allows great flexibility, not only for the compression of images but also for access into the codestream. The codestream provides a number of mechanisms for locating and extracting portions of the compressed image data for the purpose of retransmission, storage, display, or editing. This access allows storage and retrieval of compressed image data appropriate for a given application without decoding. This Recommendation | International Standard provides the framework, concepts, and methodology for testing and the criteria to be achieved to claim compliance to Rec. ITU-T T.800 | ISO/IEC 15444-1 or Rec. ITU-T T.814 | ISO/IEC 15444-15. The objective of standardization in this field is to promote interoperability between JPEG 2000 encoders and decoders and to test these systems for compliance to this Recommendation | International Standard. Compliance testing is the testing of a candidate product for the existence of specific characteristics required by a standard. It involves testing the capabilities of an implementation against both the compliance requirements in the relevant standard and the statement of the implementation's capability. The purpose of this Recommendation | International Standard is to define a common test methodology, to provide a framework for specifying abstract test suites (ATS), and to define the procedures to be followed during compliance testing. Any organization contemplating the use of test methods defined in this Recommendation | International Standard should carefully consider the constraints on their applicability. Compliance testing does not include robustness testing, acceptance testing, and performance testing. NOTE - This specification is in its 2nd edition in ITU and in its 3rd edition in ISO/IEC. This second (ITU) / third edition (ISO/IEC) cancels and replaces the previous edition which has been technically revised. The main changes compared to the previous edition are as follows: ? the criteria to be achieved to claim compliance with Rec. ITU-T 814 | ISO/IEC 15444-15 are added. This Recommendation | International Standard contains a normative electronic attachment with the codestreams used in the application of the procedures described herein and available at [https://www.itu.int/ifa/t/2017/sg16/exchange/wp3/q06/Refs/T.803-15444-4-Ed3_Codestreams.zip].