Standard Historical Last Updated: Nov 19, 2019 Track Document
ASTM E1360-05(2015)

Standard Practice for Specifying Color by Using the Optical Society of America Uniform Color Scales System

Standard Practice for Specifying Color by Using the Optical Society of America Uniform Color Scales System E1360-05R15 ASTM|E1360-05R15|en-US Standard Practice for Specifying Color by Using the Optical Society of America Uniform Color Scales System Standard new BOS Vol. 06.01 Committee E12
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Significance and Use

5.1 Notational systems that specify and identify colors have proved to be very useful. This practice describes how to assign an OSA-UCS notation to a color specimen. This notation gives its position within the color space determined by the Optical Society of America Committee on Uniform Color Scales to represent the closest possible approximation to a color space in which equal distances equate to equal visually perceived differences. The cuboctahedral sampling fills the color space with a more closely spaced set of samples than would a cubic lattice or samples placed on polar coordinates.

Scope

1.1 This practice provides a means for specifying the colors of objects in terms of the Optical Society of America Uniform Color Scales. Both computational and visual methods are included. The practice is limited to opaque objects, such as painted surfaces, viewed in daylight by an observer having normal color vision.

1.2 This practice does not cover the preparation of specimens. If the preparation of specimens is required in conjunction with this practice, a mutually agreed upon procedure shall be established.

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Details
Book of Standards Volume: 06.01
Developed by Subcommittee: E12.07
Pages: 15
DOI: 10.1520/E1360-05R15
ICS Code: 17.180.20