White constancy method for mobile displays

Ji Young Yum; Hyun Hee Park; Seul Ki Jang; Jae Hyang Lee; Jong Ho Kim; Ji Young Yi; Min Woo Lee

doi:10.1117/12.2041405

7 March 2014 White constancy method for mobile displays

Ji Young Yum, Hyun Hee Park, Seul Ki Jang, Jae Hyang Lee, Jong Ho Kim, Ji Young Yi, Min Woo Lee

Proceedings Volume 9023, Digital Photography X; 902315 (2014) https://doi.org/10.1117/12.2041405
Event: IS&T/SPIE Electronic Imaging, 2014, San Francisco, California, United States

Abstract

In these days, consumer’s needs for image quality of mobile devices are increasing as smartphone is widely used. For example, colors may be perceived differently when displayed contents under different illuminants. Displayed white in incandescent lamp is perceived as bluish, while same content in LED light is perceived as yellowish. When changed in perceived white under illuminant environment, image quality would be degraded. Objective of the proposed white constancy method is restricted to maintain consistent output colors regardless of the illuminants utilized. Human visual experiments are performed to analyze viewers’perceptual constancy. Participants are asked to choose the displayed white in a variety of illuminants. Relationship between the illuminants and the selected colors with white are modeled by mapping function based on the results of human visual experiments. White constancy values for image control are determined on the predesigned functions. Experimental results indicate that propsed method yields better image quality by keeping the display white.

Citation Download Citation

Ji Young Yum, Hyun Hee Park, Seul Ki Jang, Jae Hyang Lee, Jong Ho Kim, Ji Young Yi, and Min Woo Lee "White constancy method for mobile displays", Proc. SPIE 9023, Digital Photography X, 902315 (7 March 2014); https://doi.org/10.1117/12.2041405

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