Analysis of gamut mapping algorithms from the viewpoint of color name matching

Motomura, Hideto

doi:10.1889/1.1827875

Cited by 3 publications

(2 citation statements)

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“…In fact, it is intuitively easier to understand color specification by using language rather than numerical representation based on colorimetric systems such as tristimulus values and RGB values. For instance, effective usage of color names has been reported in image segmentation and color gamut mapping studies.…”

Section: Introductionmentioning

confidence: 99%

Color naming experiments using 2D and 3D rendered samples

Tanaka

Horiuchi

Tominaga

2014

Color Research & Application

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This article describes a color naming experiment using 2D and 3D rendered color samples. Conventional color naming experiments using a priori clues generally involve 2D clues such as color patches. However, in real‐world scenes, most objects have 3D shapes whose colors are affected by illumination effects such as shadows and gloss. We use 2D and 3D rendered samples as clues in the experiments, and analyze the relationship between color terms and object surfaces. First, we develop a color term collection system that can produce 218 test colors. We render the color images of a flat disk as a 2D sample and a sphere as a 3D sample on a calibrated display device. It is supposed that the 2D and 3D surfaces with the same object color are obtained under the same conditions of viewing and illumination. The results of color naming experiments show that there are differences for color terms between 2D and 3D samples. Important findings are as follows: (1) brighter color terms tend to be chosen for the 3D samples than the 2D samples, when observing achromatic colors, (2) achromatic color terms are chosen for 3D samples having low saturation, and (3) for chromatic colors, a darker color term is generally chosen in comparison to the corresponding 2D samples of the same color. These properties become more prominent by changing the illumination angle from 0° to 45° to the surface normal. © 2014 Wiley Periodicals, Inc. Col Res Appl, 40, 270–280, 2015

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Section: Introductionmentioning

confidence: 99%

Color naming experiments using 2D and 3D rendered samples

Tanaka

Horiuchi

Tominaga

2014

Color Research & Application

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“…In fact color specification by means of language is intuitively easier for us to understand color than numerical representation based on the colorimetric systems such as tristimulus values and RGB values. For instance, effective uses of color names are reported for image segmentation [1] and color gamut mapping [2] .…”

Section: Introductionmentioning

confidence: 99%

Investigation and analysis of color terms in modern Japanese

2010

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This paper describes the investigation and analysis of color terms in modern Japanese. Japanese people use a large vocabulary of color terms in Japanese unconsciously in their daily life. The authors have studied the basic color terms. The color vocabulary was investigated for modern Japanese over 6 years, and in all 2,100 subjects participated in the vocabulary test. This paper shows the investigation process and analyzes the collected color vocabularies from various points of view. The vocabulary test is based on a questionnaire format without showing any color samples, where each subject was requested to answer the question items for color names in two levels of importance. Therefore we collected their recall color names without a priori clue such as color samples. The frequency of occurrence of the responded color names is statistically evaluated, and then the importance of color names is analyzed from various points of view.

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