{"title":"Hue-preserving image enhancement for the elderly based on wavelength-dependent gamma correction","authors":"Manaka Yamaguchi, Ayaka Fujita, Mashiho Mukaida, Chiaki Ueda, Tadahiro Azetsu, Noriaki Suetake","doi":"10.1007/s10043-024-00932-1","DOIUrl":null,"url":null,"abstract":"<p>The purpose of this study is to apply digital image processing to original images acquired with common digital devices to generate the resulting images that are easy for the elderly to see without using colorimetric values. Therefore, we propose an image enhancement method to improve color visibility of digital images for the elderly, taking account of their color vision characteristics. The proposed method consists of lightness conversion by adaptive gamma correction according to the effective luminance ratio of the young and the elderly, contrast enhancement using an S-shape function, and hue preservation processing in the RGB color space. The effectiveness of the proposed method is illustrated by comparing it with other conventional methods through experiments using many natural images.</p>","PeriodicalId":722,"journal":{"name":"Optical Review","volume":"18 1","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optical Review","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1007/s10043-024-00932-1","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
The purpose of this study is to apply digital image processing to original images acquired with common digital devices to generate the resulting images that are easy for the elderly to see without using colorimetric values. Therefore, we propose an image enhancement method to improve color visibility of digital images for the elderly, taking account of their color vision characteristics. The proposed method consists of lightness conversion by adaptive gamma correction according to the effective luminance ratio of the young and the elderly, contrast enhancement using an S-shape function, and hue preservation processing in the RGB color space. The effectiveness of the proposed method is illustrated by comparing it with other conventional methods through experiments using many natural images.
本研究的目的是对使用普通数码设备获取的原始图像进行数字图像处理，生成老年人易于观看的图像，而无需使用色度值。因此，我们提出了一种图像增强方法，结合老年人的色觉特点，提高数字图像的色彩可视性。建议的方法包括根据年轻人和老年人的有效亮度比，通过自适应伽玛校正进行亮度转换，使用 S 形函数增强对比度，以及在 RGB 色彩空间中进行色调保留处理。通过使用许多自然图像进行实验，并与其他传统方法进行比较，说明了所建议方法的有效性。
期刊介绍：
Optical Review is an international journal published by the Optical Society of Japan. The scope of the journal is:
General and physical optics;
Quantum optics and spectroscopy;
Information optics;
Photonics and optoelectronics;
Biomedical photonics and biological optics;
Lasers;
Nonlinear optics;
Optical systems and technologies;
Optical materials and manufacturing technologies;
Vision;
Infrared and short wavelength optics;
Cross-disciplinary areas such as environmental, energy, food, agriculture and space technologies;
Other optical methods and applications.
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