?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Modeling+peripheral+visibility+under+headlamp+illumination&rft.creator=Bullough%2C+John+D.&rft.subject=Psychophysics&rft.description=Undoubtedly%2C+the+detection+of+peripheral+objects+and+pedestrians+while+driving+is+an+important+visual+task.+However%2C+there+are+few+data+that+describe+the+impact+of+parameters+such+as+headlamp+illumination%2C+peripheral+angle+and+target+reflectance+upon+the+speed+and+accuracy+with+which+one+can+detect+peripheral+targets.+The+present+paper+outlines+a+framework+for+the+development+of+a+model+that+predicts+reaction+times+and+detection+percentages+to+small+targets+of+varying+reflectance%2C+and+located+at+various+positions+in+the+field+of+view.+The+preliminary+model+closely+matches+data+from+independently-performed+field+studies+using+halogen+and+high+intensity+discharge+headlamp+sets+having+illumination+characteristics+that+conform+to+North+American+and+European+requirements+for+headlamp+beam%0Apatterns.+The+modeling+approach+discussed+in+the+paper+allows+characteristics+such+as+the+effective+field+of+view+to+be+described.+Further%2C+the+approach+could+be+extended+to+incorporate+driver+age%2C+target+size%2C+visual+clutter%2C+spectral+power+distribution%2C+glare+and+ambient+roadway+illumination+into+the+model+predictions.+Such+a+model+could+serve+as+a+useful+complement+to+existing+models+of+on-axis+(foveal)+visual+performance+in+driving+contexts&rft.publisher=University+of+Iowa%2FCD-ROM%2FWebsite&rft.date=2002&rft.type=Conference+Paper&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F2548%2F1%2FVIS2002-38.pdf&rft.identifier=++Bullough%2C+John+D.++(2002)+Modeling+peripheral+visibility+under+headlamp+illumination.++%5BConference+Paper%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F2548%2F