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ISO/IEC 10918-3:1997

Information technology - Digital compression and coding of continuous-tone still images: Extensions

This Recommendation | International Standard is applicable to continuous-tone — grayscale or colour — digital still image data. It is applicable to a wide range of applications which require use of compressed images.

This Recommendation | International Standard:

  • defines extensions [including variable quantization, selective refinement, tiling, and a Still Picture Interchange File Format (SPIFF)] to processes for converting Source image data to compressed image data;
  • defines extensions to processes for converting compressed image data to reconstructed image data;
  • defines coded representations for compressed image data;
  • gives guidance and examples on how to implement these extensions in practice;
  • describes compliance tests for these extensions.


Content Provider
International Organization for Standardization [ISO]


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ISO/IEC 10918-1:1994
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ISO/IEC 10918-3/Amd1:1999
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ISO/IEC 10918-2:1995
Information technology - Digital compression and coding of continuous-tone still images: Compliance testing
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