9. The Reasons for Changing to the v4 ICC Profile Format

  1. Phil Green MSc, PhD Reader member

Published Online: 11 FEB 2010

DOI: 10.1002/9780470688106.ch9

Color Management: Understanding and using ICC Profiles

Color Management: Understanding and using ICC Profiles

How to Cite

Green, P. (ed) (2010) The Reasons for Changing to the v4 ICC Profile Format, in Color Management: Understanding and using ICC Profiles, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9780470688106.ch9

Editor Information

  1. London College of Communication, UK

Publication History

  1. Published Online: 11 FEB 2010
  2. Published Print: 12 FEB 2010

Book Series:

  1. Wiley-IS&T Series in Imaging Science and Technology

Book Series Editors:

  1. Michael A. Kriss

ISBN Information

Print ISBN: 9780470058251

Online ISBN: 9780470688106

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Keywords:

  • chromaticAdaptationTag;
  • profile connection space (PCS);
  • v4 ICC Profile

Summary

The v2 ICC profile format specification was widely adopted by the color imaging community and proved very important in achieving and maintaining color fidelity of images across media, devices, and operating systems. The changes are designed to ensure that profile builders understand the reference color space precisely, and exactly what is required of the profile. This chapter summarizes the changes made to the specification. The job of the input profile is to define a transform from input device color values to the profile connection space (PCS). The output profile should provide a transform from the ideal reflection print to the output device. The v4 specification also indicates that the A2B table should provide as far as possible the reverse transform of the B2A table. In v4 information about the chromatic adaptation transform must be provided using the chromaticAdaptationTag, and the Bradford transform has been recommended as the default.

Controlled Vocabulary Terms

image colour analysis; rendering (computer graphics)