ISO 12641-1:2016 グラフィックテクノロジー—プリプレスデジタルデータ交換—入力スキャナーキャリブレーション用のカラーターゲット—パート1：入力スキャナーキャリブレーション用のカラーターゲット | ページ 6

3.1

CIE tristimulus value

amount of the three reference colour stimuli, in the CIE-specified trichromatic system, required to match the colour of the stimulus considered

Note 1 to entry: In the 1931 CIE standard colorimetric system, the tristimulus values are represented by the symbols X, Y, Z.

3.2

CIELAB colour difference

CIE 1976L*, a*, b* colour difference

∆E*_ab

[SOURCE:International Lighting Vocabulary 845-03-55]

3.3

CIELAB colour space

CIE 1976L*, a*, b* colour space

[SOURCE:CIE Publication 15.2]

3.4

transmittance factor

ratio of the measured flux transmitted by the sample material to the measured flux when the sample material is removed from the sampling aperture of the measuring device

3.5

transmission density

logarithm to base 10 of the reciprocal of the transmittance factor

3.6

reflectance factor

ratio of the measured flux reflected from the sample material to the flux reflected from a perfect reflecting diffuser

3.7

reflection density

logarithm to base 10 of the reciprocal of the reflectance

3.8

colour gamut

subset of perceivable colours reproducible by a device or medium

3.9

dye set

combination of light absorbing dyes

Note 1 to entry: Usually referred to as cyan, magenta, and yellow. Used in a particular photographic product which produce object colours by the selective subtraction of the incident light.

3.10

dye scale

array of physical areas having varying amounts of one or more (cyan, magenta, or yellow) dyes

3.11

neutral scale

array of physical areas having combination of dye amounts such that their chroma is equal to, or near, zero

3.12

metameric colour stimuli

spectrally different colour stimuli having the same tristimulus values

[SOURCE:International Lighting Vocabulary 845-03-05]

3.13

minimum density

Dmin

density corresponding to the maximum transmittance factor (film) or reflectance factor (paper) that a photographic product can achieve

Note 1 to entry: It is not necessarily neutral in colour and should not be confused with minimum neutral density.

3.14

minimum neutral density

minimum density that a photographic product can achieve (maximum transmittance or reflectance factors) and maintain a C*_ab = 0

Note 1 to entry: It should not be confused with minimum density (Dmin).

3.15

maximum density

Dmax

density corresponding to the minimum transmittance or reflectance factor that a photographic product can achieve

Note 1 to entry: It is not necessarily neutral in colour and should not be confused with maximum neutral density.

3.16

maximum neutral density

density corresponding to the maximum density that a photographic product can achieve (minimum transmittance or reflectance factors) and maintain a C*_ab = 0

Note 1 to entry: It should not be confused with maximum density (Dmax).

3.17

input scanner

device capable of converting the light reflectance or transmittance of a photographic (or other hardcopy) sample into an electronic signal, where the electronic signal is arranged to have an organized relationship to the spatial areas of the image evaluated

3.18

product-specific target areas

portions of the test target whose requirements are specifically defined, but whose values are a function of the particular product used to make the target

3.19

vendor-optional target areas

portions of the test target whose content is not specified but is available for use by the manufacturer of the target