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Consistent colour appearance

When a set of colour reproductions are judged to have a high degree of similarity, they are often said to have a 'Consistent (or Common) Colour Appearance'. The degree of similarity is generally judged by subjective assessment. Although this term and similar terms are widely used it has no clear definition and there is currently no standard means of assessing whether a set of colour reproductions has common colour appearance.

Following the completion of a Reportership R8-13 on Common Colour Appearance, a CIE Technical Committee TC8-16 has been established on Consistency of Colour Appearance within a Single Reproduction Medium, chaired by Craig Revie (GB) & Yasuki Yamauchi (JP). Information about Reportership R8-13 is available here.

The terms of reference of this committee are:
To study and report on sets of reproductions of the same source image that have a consistent colour appearance and are most similar to a reference reproduction, including recommending assessment methods that measure the similarity of reproductions of an image with different colour gamuts, for printed images on substrates with approximately similar characteristics in a fixed viewing environment. Only the effect of colour reproduction on appearance will be considered by this TC and so the assessment will be performed using hard copy or soft copy proofing. To propose a metric which can measure consistency of colour appearance.

This page is provided by ICC to assist CIE TC8-16 in its work. PLEASE NOTE THAT THIS PAGE AND RELATED DOCUMENTS ARE PROVIDED ON AN INFORMAL BASIS AND SHOULD NOT BE CONSTRUED AS BEING CIE PUBLICATIONS OR IN ANY WAY ENDORSED BY THE CIE


Resources

A set of test images have been proposed for use in research on this topic. A set of print gamuts are recommended for testing.


Meetings

Yamagata Workshop on Consistent Colour Appearance
Yamagata University, Yonezawa, Japan
24 April 2017, 14:00 - 16:00

Agenda

CIE TC 8-16 Consistent Colour Appearance (CCA) in a Single Reproduction Medium (Craig Revie, FFEI)
A model of consistent colour appearance (Greg High, NTNU)
Proposed future work on CCA at Yamagata University (Yasuki Yamauchi, Yamagata University)
CCA work in Fujifilm and FujiXerox (Hirokazu Kondo, Fujifilm)

Meeting notes


NTNU Workshop on Consistent Colour Appearance
NTNU in Gjøvik, Norway
9 January 2017, 09:00 - 12:00

Agenda

Start timePresentation
14:43Outline of CIE technical committee (Yasuki Yamauchi)
48:15Research at NTNU on Consistent colour appearance (Greg High)
01:26:52Research at Yamagata University (Yasuki Yamauchi)
02:20:27Methods for measurement of consistent colour appearance (Yuteng Zhu, Zhejiang University)
02:28:13Psychophysical experiments for determining consistent colour appearance (Shining Ma, Zhejiang University)
02:55:19Reflections on experiment for media-relative gamut mapping (Theresa Deschner)

Start times indicate the time the presentation started in the meeting recording.


Pre-TC meeting of the CIE Common Colour Appearance Focus Group (R8-13)
Westgate Hotel, San Diego, California in conjunction with IS&T CIC 24
8th November 2016, 1:00 pm - 2:00 pm

Agenda

Start timePresentation
0:00Introduction and welcome
3:10General problem statement (R8-13 Common Colour Appearance)
11:48Informal 'Focus Group' on LinkedIn
13:55Focus for the proposed CIE Technical Committee
22:40Planned research projects (NTNU, Gjøvik)
28:45Planned research projects (Yamagata University)
30:10Planned research projects (RIT)
44:30Planned research projects (Fogra)
45:50Discussion

Start times indicate the time the presentation started in the meeting recording.

Meeting notes


Second Teleconference on Common Colour Appearance
CIE R8-13 Focus Group, Tuesday 23rd August 2016(14:00 GMT)

Agenda

Start timePresentation
0:00Introductions and background
10:001. Review of the CIE R8-13 report
14:402. Proposal for CIE TC on Common Colour Appearance
 Possible research methods or tools
33:103. Philipp Tröster Fogra research plans
40:404. Yasuki Yamauchi: Yamagata research plans
51:305. Greg High: Gjøvik research plans
1:05:006. Elena Fedorovskaya/Bob Chung RIT research plans
.John Seymour: See paper below
1:14:457. Dave McDowell: Why the CRPCs produce common colour appearance
1:27:15Jack Holm: explanation of what Jack thinks could be achieved
 Claas Bickeboeller: explanation of what Claas thinks could be achieved
1:33:158. Craig Revie Standardisation of assessment method

John Seymour: Using the ISO 15339 reference print conditions

Start times indicate the time the presentation started in the meeting recording.
Individual presentations are available by clicking on the presentation title.


First Teleconference on Common Colour Appearance
CIE R8-13 Focus Group, Monday 7th December 2015 (15:00 GMT)

Agenda

Start timePresentation
3:241. Po-Chieh Hung: Clear definition of Common Colour Appearance and suggested plan of work
12:202. Jürgen Seitz: References for color communication
21:403. Philipp Tröster: Fogra common colour appearance metric
42:054. Yasuki Yamauchi: A metric to evaluate the closeness of the two colours
1:01:385. Mike Rodriguez: Development of ISO 15339 CRPCs
1:20:006. Greg High: Specific usage cases for a model of common colour appearance
1:29:007. Jan Morovic: Evaluation of sets of reproductions under multiple conditions
1:38:258. Jack Holm: Artistic intent and Common Colour Appearance
1:52:309. Ken Elsman: Two important aspects for Common Colour Appearance
1:59:4510. Elena Fedorovskaya: Common Colour Appearance research at RIT
1:52:3011. Claas Bickeboeller: Testing ICC Profiles for Common Colour Appearance using Roman 16 images
2:07:30Craig Revie: The way forward for Common Colour Appearance (general discussion)

Start times indicate the time the presentation started in the meeting recording.
Individual presentations are available by clicking on the presentation title.

Meeting notes