ISO 10527-2007 PDF

Full title and description

ISO 10527:2007 — CIE standard colorimetric observers. International standard that specifies the colour‑matching functions (standard observer functions) used in colorimetry, providing the data and definitions needed to calculate tristimulus values and perform colorimetric comparisons for the CIE 1931 and CIE 1964 standard observers.

Abstract

ISO 10527:2007 defines two sets of colour‑matching functions: those for the CIE 1931 standard colorimetric observer (approx. 1° field) and those for the CIE 1964 supplementary standard observer (large field). The technical content of ISO 10527:2007 is carried forward into ISO 11664‑1:2007; the 2007 edition includes a corrigendum that reassigns the reference number to ISO 11664‑1. The standard has since been withdrawn and its content consolidated under the ISO 11664 series.

General information

• Status: Withdrawn (technical content incorporated into ISO 11664‑1:2007).
• Publication date: October 2007 (Edition 1, 2007).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 17.180.20 — Colours and measurement of light.
• Edition / version: Edition 1 (2007); corrected by ISO 10527:2007/Cor.1:2008 which reassigns the reference to ISO 11664‑1.
• Number of pages: ~30 pages (ISO listing shows 30 pages).

Scope

Specifies colour‑matching functions for use in colorimetry and colour measurements. Two distinct sets of functions are given: one representing the CIE 1931 standard colorimetric observer (for small visual fields) and one for the CIE 1964 supplementary standard observer (for larger visual fields). The standard provides the tabulated numerical colour‑matching functions and the conventions needed to compute tristimulus values and to support colour comparisons and calculations in lighting, colour measurement instrumentation and colour science.

Key topics and requirements

• Definition and tabulation of colour‑matching functions for the CIE 1931 (2°) standard observer.
• Definition and tabulation of colour‑matching functions for the CIE 1964 (10°) supplementary observer.
• Conventions for application of the functions in computing tristimulus values and colour coordinates.
• Reference to standard viewing conditions and the application context for photopic (cone‑mediated) vision.
• Corrigendum and re‑designation notes specifying transition of content to ISO 11664‑1.

Typical use and users

Used by colour scientists, lighting engineers, test laboratories, manufacturers of colorimeters and spectrophotometers, researchers in vision and colour science, and standards bodies who need the reference observer data to calculate tristimulus values, validate measurement equipment, or convert spectral data to colour coordinates.

Related standards

ISO/CIE 10527:1991 (previous edition); ISO 11664‑1:2007 (CIE/ISO colorimetry — Part 1: standard colorimetric observers) which consolidates and supersedes ISO 10527:2007; related parts of the ISO 11664 series and CIE recommendations on colorimetry and standard illuminants.

Keywords

colour‑matching functions, standard observer, CIE 1931, CIE 1964, colorimetry, tristimulus, ISO 11664, colour measurement, standard illuminants, CIE.

FAQ

Q: What is this standard?

A: ISO 10527:2007 is an international standard that provides the numerical colour‑matching functions for the CIE 1931 and CIE 1964 standard observers used in colorimetry.

Q: What does it cover?

A: It covers the definition, tabulation and conventions for using colour‑matching functions to compute tristimulus values and perform colour comparisons under specified viewing conditions. The standard’s technical content is identical to that contained in ISO 11664‑1:2007.

Q: Who typically uses it?

A: Colour scientists, instrument manufacturers (colorimeters/spectrophotometers), calibration and testing laboratories, lighting and display engineers, and standards committees use these reference functions for measurement, calibration and research.

Q: Is it current or superseded?

A: ISO 10527:2007 has been withdrawn as a standalone document; its technical content is incorporated into ISO 11664‑1:2007 (the ISO designation for the same CIE standard colorimetric observers). Users should reference ISO 11664‑1 for the current published entry.

Q: Is it part of a series?

A: Yes — it belongs to the family of colorimetry standards (ISO 11664 series) and corresponds to CIE recommendations for standard observers; the ISO/CIE collaboration and CIE publications provide companion material on standard illuminants and colorimetric practice.

Q: What are the key keywords?

A: Colour‑matching functions; standard observer; CIE 1931; CIE 1964; colorimetry; tristimulus values; ISO 11664; CIE.