This International Standard defines the encoding rules which shall apply to the representation of IPI-IIF image data.The IPI-IIF data format is defined in ISO/IEC standard 12087-3, called ""Image Interchange Facility (IIF)"".
DS/ISO/IEC 12089:1998 history
1998DS/ISO/IEC 12089:1998 Information technology - Computer graphics and image processing - Encoding for the Image Interchange Facility (IIF)