The scope of JPEG XE is the creation of a standard for the representation of Events in an efficient way allowing interoperability between sensing, storage, and processing, targeting machine vision and other relevant applications. An Event is the message that signals the result of an observation at a precise point in time. It is typically triggered by a detected change in the physical world. Examples are contrast detection (CD) events from an event-based vision sensor or inertial measurement unit (IMU) readings. Part 1 – Core coding system This part defines the syntax and an accompanying decompression process that is capable of efficiently representing event sequences and allows for low-latency and low-complexity implementations. Part 2 – Profiles and levels This part defines several subsets of the syntax specified in Part 1 as profiles and levels. Part 3 – Reference software This part contains the reference software of the JPEG XE series. It acts as a guideline for implementation and as a reference for conformance testing. Part 4 – Conformance This part specifies the framework, concepts, methodology for testing, and criteria to be achieved to claim conformance to multiple parts of the JPEG XE series. It lists the conformance testing procedures. Part 5 – File formats and metadata This part specifies file formats to store JPEG XE codestreams along with metadata on the event sequences. It further also defines metadata information that can be embedded into the Part 1 syntax.