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 12087-3, called “Image Interchange Facility (IIF)”. It is Part 3 of the Image Processing and Interchange International Standard, defined in ISO/IEC 12087. The IPI-IIF facilitates the interchange of digital images. It consists of two major parts:

• the IPI-IIF data format (IIF-DF) definition, whose syntax is described using ASN. 1;
• the IPI-IIF gateway definition, whose functionality is described by an application programmers interface.

The IPI-IIF is based on the definition described in Part 1, Common Architecture for Imaging (CAI) of the ISO/IEC 12087.

Due to the fact that the syntax of the IIF-DF is expressed using the Abstract Syntax Notation One (ASN.1) defined by ISO/IEC 8824, this standard makes use of the Basic Encoding Rules (BER) for ASN.1, by referring to ISO/IEC 8825 for the definition of encoding rules.

Reference shall be made to this International Standard, and its definitions shall be employed, whenever images are interchanged, according to the IIF-DF, defined in ISO/IEC 12087-3.