ISO/IEC 8613-7:1994/Cor 1:1998

Overview

ISO/IEC 8613-7:1994/Cor 1:1998 is a technical corrigendum to the international standard for Information Technology titled Open Document Architecture (ODA) and Interchange Format: Raster graphics content architectures. Published by ISO and the International Electrotechnical Commission (IEC), this corrigendum provides crucial corrections and clarifications to the original 1994 standard covering raster graphics content architectures within the ODA framework.

The Open Document Architecture (ODA) standard aims to provide a universal method for creating, exchanging, and managing complex documents that include text, graphics, and other multimedia elements. Specifically, part 7 addresses the technical structure and encoding of raster graphics within ODA documents, which is essential for preserving image quality and interoperability across diverse systems.

Key Topics

This technical corrigendum addresses several important corrections to the original specification to ensure accuracy and consistency in the implementation of raster graphics architectures:

• Corrections in Coordinate Definitions
  The corrigendum revises coordinate constraints in graphic element positioning, clarifying the correct use of variables (e.g., replacing "where X1 ≤ 2 and Y1 ≤ Y2" with "where X1 ≤ X2 and Y1 ≤ Y2") to avoid ambiguity in graphical layouts.

• Data Type Name Standardization
  Terminology for key data types such as Raster-Gr-Coding-Attributes and Tile-Type have been harmonized by fixing typographical errors:

  • Changing "number-of-pels-er-line" to "number-of-pels-per-line"
  • Correcting "bits-per-colour-omponent" to "bits-per-colour-component"
  • Adjusting Tile-Type enumeration values for encoding types to lowercase prefixes for uniformity (e.g., t6-encoded instead of T.6-encoded).

• Attribute Definition Clarifications
  Modifications ensure that attributes related to color components and tile coding conform strictly to the intended format, improving interoperability and document fidelity.

Applications

This corrigendum is essential for developers, document architects, and IT professionals who implement or utilize ODA standards involving raster graphic content:

• Document Interchange Systems
  Ensures accurate raster graphic handling in multi-platform document exchange solutions, critical for maintaining image integrity.

• Digital Archiving and Preservation
  Supports consistent raster graphic encoding and decoding in ODA-based archival formats, aiding long-term digital preservation efforts.

• Software Development
  Guides software engineers in updating ODA-compliant document processors, viewers, and converters to reflect clarified raster graphic attributes and data types.

• Standard Compliance Verification
  Assists certification bodies and compliance testers by providing precise definitions and corrections for rigorous standard conformance evaluations.

Related Standards

ISO/IEC 8613-7:1994/Cor 1:1998 aligns with and complements several related standards in information technology and document architecture:

• ISO/IEC 8613 (ODA Series) - The full Open Document Architecture standard, detailing text, graphics, and compound document structures.
• ITU-T Rec. T.417 - Telecommunications standards related to document architecture referenced within this corrigendum.
• Raster Graphic Coding Standards - Other industry standards on image encoding formats (such as TIFF, JPEG) which may interface with ODA raster content.
• ISO/IEC JTC 1 - The joint technical committee responsible for developing IT standards, including ODA and related document interchange formats.

This technical corrigendum ensures that raster graphics content architectures within the Open Document Architecture remain precise, interoperable, and practical for real-world document exchange applications. Adhering to these corrections enhances the robustness of ODA implementations worldwide.