From Just Solve the File Format Problem
JPEG Pleno is an image format designed to be used with certain advanced forms of imagery, such as light-field (plenoptic) cameras. It will be published as ISO/IEC 21794. As of 2020-03, it is a work in progress.
- ISO/IEC 21794 - Plenoptic image coding system (JPEG Pleno). (These documents are probably not free to download.)