Improvement in appearance of colors for elderly persons using lightness transform |
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| Authors: | Chiaki Ueda Tadahiro Azetsu Noriaki Suetake Eiji Uchino |
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| Institution: | 1.Graduate School of Science and Engineering,Yamaguchi University,Yamaguchi,Japan;2.Department of Culture and Creative Arts,Yamaguchi Prefectural University,Yamaguchi,Japan;3.Graduate School of Sciences and Technology for Innovation,Yamaguchi University,Yamaguchi,Japan;4.Fuzzy Logic Systems Institute,Iizuka,Japan |
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| Abstract: | The color of an object appears to be different for elderly and young persons. This is because human visual features vary with on age. In general, the spectral transmittance of the crystalline lens of an elderly person is lower than that of a young person. The low spectral transmittance decreases the brightness of the visual field. This phenomenon affects the color appearance of an image in human visual perception. In this paper, a lightness transform method is proposed to improve the color appearance of images for elderly persons. In the proposed method, colors that are difficult for an elderly person to see are transformed into colors that are easy to see by adding lightness contrast. The performance of the proposed method is confirmed in experiments using digital images. |
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