Enhancing a Display’s Sunlight Readability with Tone Mapping

Autor: Yizhou Qian, Sung-Chun Chen, En-Lin Hsiang, Hajime Akimoto, Chih-Lung Lin, Shin-Tson Wu
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Photonics, Vol 11, Iss 6, p 578 (2024)
Druh dokumentu: article
ISSN: 2304-6732
DOI: 10.3390/photonics11060578
Popis: The sunlight readability of display devices, such as notebook computers, transparent displays, vehicle displays, and augmented reality, is a significant technical challenge due to degraded image quality. To mitigate this problem, by fitting the human eye function, we propose a tone mapping method on a mobile phone display panel to enhance low grayscale image readability under bright ambient light. Additionally, we adapt a mini-LED backlight model to simulate real images under different ambient lighting conditions. Both experimental and simulated results indicate that high luminance displays with an optimized gamma value significantly enhance sunlight readability and image quality. Moreover, global color rendering can alleviate color shift. Such a method is also valid for the optimization of optical see-through devices under diverse environmental conditions.
Databáze: Directory of Open Access Journals