Information technology. Digital compression and coding of continuous-tone still images. Registration of JPEG profiles, SPIFF profiles, SPIFF tags, SPIFF colour spaces, APPn markers, SPIFF compression types, and Registration Authorities (REGAUT)|Colour codes, Coding (data conversion), Verification, Tables (data), Computer software, Approval organizations, Identification methods, Data security, Photographic images, Recording systems, Tags (data processing), Syntax, Character strings, Data conversion, Information marks, Coded representation, Data structures, Digital recording methods, Data processing, Video recording, Block formats, Profile, Decoding, Designations, Data compression, Data storage protection, Codes, Conformity, Data layout Registration organization