ISO/IEC 18477-4:2017/Cor 1:2023

Overview

ISO/IEC 18477-4:2017/Cor 1:2023 is a technical corrigendum to the international standard ISO/IEC 18477-4:2017, published by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). This corrigendum updates the part focused on conformance testing for scalable compression and coding of continuous-tone still images. The amendment ensures enhanced clarity and accessibility by providing updated references and executable test suites.

The ISO/IEC 18477 series is fundamental for standardized methods in compressing and encoding continuous-tone still images, facilitating scalable image representation with applications across multimedia, broadcasting, and digital archiving. Part 4 specifically addresses conformance testing to validate implementations against the standard.

Key Topics

• Conformance Testing Updates
  The corrigendum adds new instructions to Clause B.1, notably directing users to executable test suites that help verify conformance to the standard. This enhancement supports developers and implementers in validating their image compression tools effectively.

• Scalable Compression Focus
  The standard supports multiple encoding layers and resolutions, enabling scalable transmission and storage of images without significant loss in visual quality.

• Technical Consistency
  This corrigendum ensures that the conformance testing mechanisms remain consistent with ongoing technological advancements and practical implementation requirements.

• Accessibility Improvements
  By providing direct links to executable test suites, the corrigendum facilitates easier adoption and testing of conformance, streamlining quality assurance processes.

Applications

• Digital Imaging Software
  Software developers use this standard and its conformance tests to ensure that their image compression algorithms meet international requirements for scalable continuous-tone still images.

• Broadcasting and Media
  Scalable image coding allows broadcasters to transmit images in varying resolutions depending on bandwidth availability, improving user experience across devices.

• Archival and Preservation
  Institutions that archive digital images rely on standardized compression techniques to maintain image integrity while optimizing storage space.

• Multimedia Systems
  Integration into multimedia coding frameworks supports efficient transmission and rendering of high-quality images across different platforms.

Related Standards

• ISO/IEC 18477 Series
  This set covers various aspects of scalable compression and coding of continuous-tone still images, including baseline specifications and advanced coding techniques.

• ISO/IEC 15948 (PNG)
  Another image compression standard focusing on lossless compression of continuous-tone images.

• JPEG and JPEG 2000 Standards
  Widely used standards for still image compression with scalability features related to this ISO/IEC series.

• ISO/IEC JTC 1/SC 29
  The subcommittee responsible for coding of audio, picture, multimedia, and hypermedia information, which maintains and develops these standards.

For developers and organizations involved in image compression technology, adherence to ISO/IEC 18477-4:2017/Cor 1:2023 ensures reliable conformance testing capabilities that enhance interoperability and quality assurance in scalable image coding implementations. Access the official executable test suites at ISO Standards Website to validate software compliance effectively.