Abstract

A colored overlay has been used as an assistive device for people with visual stress to improve readability. Recently, a kind of virtual colored overlays mobile device has been developed; however, it can’t be applied to all contents of its environment. In this paper, I implemented a mobile overlay application based on the Android operating system. I found I needed to use chromaticity measured in reflect mode in order to keep the film’s overlay effect in virtual colored overlay, which was applied to printed paper. The test results showed that it had the same effect as when existing film overlay was used on white paper, with the exception of color effect on the white screen of mobile devices.

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