Evaluation of recognition threshold for discolored safety signs in terms of white pixel concentration and CIELUV color difference
School for Higher and Professional Education (Design), Vocational Training Council, Hong Kong Department of Systems Engineering and Engineering Management, City University of Hong Kong, Kowloon Tong, Hong Kong
Department of Systems Engineering and Engineering Management, City University of Hong Kong, Kowloon Tong, Hong Kong
ABSTRACT: In-service safety signs can be damaged beyond the point of usefulness due to natural degradation. This study investigated recognition threshold for discolored safety signs in terms of white pixel concentration and CIELUV color difference. Fifteen safety signs ...
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