ISO/IEC 39794-6:2021

This document specifies:

generic extensible data interchange formats for the representation of iris image data: a tagged binary data format based on an extensible specification in ASN.1 and a textual data format based on an XML schema definition that are both capable of holding the same information,

examples of data record contents,

application specific requirements, recommendations, and best practices in data acquisition, and

conformance test assertions and conformance test procedures applicable to this document.

The iris image information is stored as:

an array of intensity values optionally compressed with ISO/IEC 15948 or ISO/IEC 15444-1, or

an array of intensity values optionally compressed with ISO/IEC 15948 or ISO/IEC 15444-1 that can be cropped around the iris, with the iris at the centre, and which can incorporate region-of-interest masking of non-iris regions.

This document also specifies elements of conformance testing methodology, test assertions, and test procedures, as applicable to this document.

It establishes:

test assertions pertaining to the structure of the iris image data format, as specified in Clauses 6, 7, 8 and 9 of this document,

test assertions pertaining to internal consistency by checking the types of values that may be contained within each field, and

semantic test assertions.

The conformance testing methodology specified in this document does not establish:

tests of other characteristics of biometric products or other types of testing of biometric products (e.g. acceptance, performance, robustness, security), or

tests of conformance of systems that do not produce data records conforming to the requirements of this document.

This document does not establish:

requirements on the optical specifications of cameras, or

requirements on photometric properties of iris images, or

requirements on enrolment processes, workflow and use of iris equipment.