GB/T 7921-1997 in English

SUPERSEDED

Uniform colour space and colour difference formula

Issued on:1997-05-04
Implemented on:1997-10-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $190.00
$185.00

Standard No:	GB/T 7921-1997
Document status:	SUPERSEDED
Superseded by:	GB/T 7921-2008 Uniform color space and color difference formula
Superseded on:	2009-03-01
Title in English:	Uniform colour space and colour difference formula
Title in Chinese:	均匀色空间和色差公式
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	1997-05-04
Implemented on:	1997-10-01
Superseding:	GB 7921-1987 Uniform color space and color difference formula
ICS Classification:	17.180.20-Colours and measurement of light
Chinese Classification:	A26-Color
Professional Classification:	GB-National Standard
Related Keywords:	colour difference formula scopethis standard specifies cie1976 corresponding color difference formula colour space color difference color space
Related Topics:	Color difference equipment inter-assay relative range chromatic aberration homogenate flow inter-assay relative range Very poor inter-assay difference Uniform solution formula Difference between batches Color coordinates and color differences for colorimetric evaluation of the cielab color space Color difference standard Colorimeter color Uniform seed board average degree formula gold homogeneity Chromatic difference principle dissolve evenly flow staining indirect method Handheld Colorimeter Sheet chromatic aberration How to spread evenly uniform spread evenly spatial difference Secondary Chromatic Aberration tank uniformity space difference Chromatic difference principle space version Extremely poor during the day formula formula Color difference data Chromatic difference gap Color difference formula Batch-to-batch and box-to-box variance uniform data data uniformity Solution uniformity Inter-batch difference Color difference formula din99 homogeneous solution Portable colorimeter homogeneous liquid Chromatic Aberration Parameters GBT7921 GB/T 7921-1997 GB/T 7921-2008 leveling agent Content uniformity calculation formula Is the chromatin uniform? Chromatographic retention time formula Spatial bandwidth product calculation formula Temperature Uniformity Formula Orange color difference value is average Spot color color difference international Color difference industry gb/t 7921 gbt7921 gb/t 7921-2008 gb/t7921-2008

本标准规定了在视觉上近似均匀的CIE1976（L.u.v.）和CIE1976(L.a.b.)有色空间及相应的色差公式。本标准适用于一切光源色和物体色的表示以及色差的表示和计算。

Scope

This standard specifies CIE1976 (L^*u^*v^*) and CIE1976 (L^*a^*b^*) color space and the corresponding color difference formula. This standard applies to the expression of all light source colors and object colors, as well as the expression and calculation of color difference.

More samples: DL/T 368-2010 QC/T 942-2021 NB/T 47013.2-2015

Sample only — not a preview of GB/T 7921-1997

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