Investigation of the Helmholtz-Kohlrausch effect using wide-gamut display

Semin Oh; Youngshin Kwak

doi:10.1117/12.2081114

8 February 2015 Investigation of the Helmholtz-Kohlrausch effect using wide-gamut display

Semin Oh, Youngshin Kwak

Proceedings Volume 9395, Color Imaging XX: Displaying, Processing, Hardcopy, and Applications; 93950X (2015) https://doi.org/10.1117/12.2081114
Event: SPIE/IS&T Electronic Imaging, 2015, San Francisco, California, United States

Abstract

The aim of this study is to investigate whether the Helmholtz-Kohlrausch effect exists among the images having various luminance and chroma levels. Firstly, five images were selected. Then each image was adjusted to have 4 different average CIECAM02 C and 5 different average CIECAM02 J. In total 20 test images were generated per each image for the psychophysical experiment. The psychophysical experiment was done in a dark room using a LCD display. To evaluate the overall perceived brightness of images a magnitude estimation method was used. Fifteen participants evaluated the brightness of each image comparing with the reference image. As a result, participants tended to evaluate the brightness higher as the average CIECAM02 J and also CIECAM02 C of the image increases proving the Helmholtz- Kohlrausch effect in images.

Citation Download Citation

Semin Oh and Youngshin Kwak "Investigation of the Helmholtz-Kohlrausch effect using wide-gamut display", Proc. SPIE 9395, Color Imaging XX: Displaying, Processing, Hardcopy, and Applications, 93950X (8 February 2015); https://doi.org/10.1117/12.2081114

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