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Traffic signal light detection through sunglare filters of different Q factors
Author(s) -
Palmer David A.,
Mellerio John,
Cutler Amanda
Publication year - 1997
Publication title -
color research and application
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 62
eISSN - 1520-6378
pISSN - 0361-2317
DOI - 10.1002/(sici)1520-6378(199702)22:1<24::aid-col5>3.0.co;2-6
Subject(s) - signal (programming language) , distortion (music) , traffic signal , detection theory , measure (data warehouse) , perception , mathematics , factor (programming language) , computer science , statistics , artificial intelligence , acoustics , computer vision , physics , psychology , telecommunications , data mining , real time computing , amplifier , bandwidth (computing) , neuroscience , detector , programming language
Recent guides for use of sunglare protection filters have introduced the concept of Q factors as a measure of colour appearance distortion in viewing traffic signal lights. The adoption of Q factor values was apparently arbitrary and not firmly based on experimental data. The manner in which changes in Q factor affect colour perception and detection of signal lights has been measured and shows that detection thresholds vary with the Q factor in a manner that can only partly be explained, but that is not independent of the colour of the signal as assumed in the guides. © 1997 John Wiley & Sons, Inc. Col Res Appl, 22, 24–31, 1997.