ISO/IEC 39794-6:2021 信息技术 可扩展的生物特征数据交换格式 第6部分：虹膜图像数据

标准编号：ISO/IEC 39794-6:2021

中文名称：信息技术 可扩展的生物特征数据交换格式 第6部分：虹膜图像数据

英文名称：Information technology — Extensible biometric data interchange formats — Part 6: Iris image data

发布日期：2021-03

标准范围

本文件规定:-用于表示虹膜图像数据的通用可扩展数据交换格式:基于ASN.1中的可扩展规范的标记二进制数据格式和基于XML模式定义的文本数据格式，两者都能够保存相同的信息，-数据记录内容的示例，-数据采集中的特定应用要求、建议和最佳实践，以及-适用于本文件的一致性测试断言和一致性测试程序。虹膜图像信息存储为:-可选地用ISO/IEC 15948或ISO/IEC 15444-1压缩的强度值阵列，或-可选地用ISO/IEC 15948或ISO/IEC 15444-1压缩的强度值阵列，其可以在虹膜周围裁剪，其中虹膜位于中心，并且其可以结合区域-非虹膜区域的感兴趣掩蔽。本文件还规定了适用于本文件的一致性测试方法、测试断言和测试程序的要素。它规定:-与虹膜图像数据格式的结构有关的测试断言，如本文档第6、7、8和9条中所规定的，-通过检查每个字段内可能包含的值的类型来测试与内部一致性有关的断言，以及-语义测试断言。本文件中规定的一致性测试方法并未建立:-生物识别产品的其他特性的测试或生物识别产品的其他类型的测试（例如验收、性能、稳健性、安全性），或-未产生符合本文件要求的数据记录的系统的一致性测试。本文件不确定:-相机光学规格的要求，或-对虹膜图像的光度特性的要求，或-关于登记程序、工作流程和iris设备使用的要求。

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.

标准预览图