Semiconductor Physics, Quantum Electronics & Optoelectronics, 25 (3), P. 342-347 (2022).

Color appearance models CAM16, ZCAM and CAM20u for video applications

N. Raheem1, A.Q. Taher2, A.I. Alanssari3, V.V. Pyliavskyi4, B.S. Bashar3, M.M. Ismail3

1Imam Ja’afar Al-Sadiq University, Baghdad, Iraq
2Department of Computer Engineering Techniques, Islamic University, Najaf, Iraq
3Department of Computer Engineering Techniques, Al Nisour University College, Iraq
4Department radio and television broadcasting,
State University of Intelligence Technologies and Telecommunications, Odesa, Ukraine
Corresponding author e-mail:

Abstract. This work is devoted to the study of the possibility to use color perception models for processing streaming videos. The paper describes the principles of the control of image parameters which depend on the image adaptive properties. Methods for obtaining adaptive parameters such as brightness of adaptation, brightness of stimulus and brightness of background, as well as observation conditions are described. The CAM16 color perception model is accepted as the main one as well as the ZCAM and CAM20u models as the promising ones. The usability of color perception models is estimated, namely, the change of color rendering vector is assessed. It is shown that the chromaticity points that make up the color tone lines have a different nature of change – slope, shape. The estimates of the dependence of transmitted colors on lightness are provided. It is demonstrated that the lightness parameter is more non-linear character CAM20u as compared to the previous models.

Keywords:image, color space, image quality, CAM16, ZCAM, CAM20u, video rendering.

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