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http://dx.doi.org/10.3745/KTSDE.2013.2.2.145

Implementation of Mobile Virtual Colored Overlay for People with Scotopic Sensitivity Syndrome  

Jang, Young Gun (청주대학교 컴퓨터정보공학과)
Publication Information
KIPS Transactions on Software and Data Engineering / v.2, no.2, 2013 , pp. 145-150 More about this Journal
Abstract
A film colored overlay has been used as an assistive device for dyslexics, Recently, several virtual colored overlays which can be used in computer were developed. But mobile virtual overlay has not been developed yet. In this paper, I implemented a mobile overlay application which is based android operating system and displays a colored overlay of screen all the time while user can freely interact with rest of apps in normal manner by using root window and service. A method is presented to determine the source color of a virtual overlays by estimating alpha value of alpha blending algorithm through measurement of the chromaticity and transmissivity of film overlays and I implemented all colors which are presented by using Intuitive Overlays. Test results of the developed virtual overlay show that all colors of the overlays are almost identical to the colors of Intuitive Overlay by using the chroma meter CS-200A.
Keywords
Scotopic Sensitivity Syndrome; Virtual Colored Overlay; Mobile Environments; Alpha Value Estimation; Control An Overlapped App;
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