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colorimetric neutral

having the same chromaticity as the adopted white

NOTE 1 When stating that an image area is a colorimetric neutral, it is necessary to designate the adopted white. For reflection hardcopy images, the adopted white is typically considered to be either the media white or a perfectly diffuse reflecting surface illuminated by the illumination source.

NOTE 2 The adopted white of colorimetric neutral may or may not correspond to the adapted white according to an observer.

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