ProLab: психофизически равномерная проективная система цветовых координат

Иван Андреевич Коноваленко,Анна Александровна Смагина,Дмитрий Петрович Николаев,Петр Петрович Николаев

ПРЕПРИНТ

Эта статья является препринтом и не была отрецензирована.
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ProLab: психофизически равномерная проективная система цветовых координат

И. А. Коноваленко,

А. А. Смагина,

Д. П. Николаев,

П. П. Николаев

2020-07-03

https://doi.org/10.24108/preprints-3112064

В работе предлагается ввести новое пространство цветовых координат proLab, связанное с CIE XYZ трехмерным проективным преобразованием. В статье показывается, что по психофизической равномерности, оцениваемой с помощью метрики STRESS по отношению к формуле цветовых различий CIEDE2000, предлагаемое пространство значительно опережает широко используемую систему координат CIELAB, хотя и уступает современной CAM16-UCS. Угловые метрики ошибок определения цветности, обычно используемые в линейных цветовых пространствах, могут использоваться и в proLab, поскольку проективное преобразование сохраняет линейность многообразий. При этом, в отличие от линейных пространств, угловые ошибки, различные по цветовому тону, в proLab нормированы в соответствии с порогами цветоразличения человека. В работе также показывается, что гетероскедастичность дробового шума в proLab оказывается меньшей, чем в CAM16-UCS и стандартных цветовых пространствах. Это делает proLab удобной координатной системой для линейного цветового анализа — решения задач линейной регрессии в цветовом пространстве.

Ссылка для цитирования:

Коноваленко И. А., Смагина А. А., Николаев Д. П., Николаев П. П. 2020. ProLab: психофизически равномерная проективная система цветовых координат. PREPRINTS.RU. https://doi.org/10.24108/preprints-3112064

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