INS - R 9803 March 31 , 1999

Thee problem off producingg aa photorealisticc renderingg off aa graphicall modell continuess too bee thee focuss of considerablee research effortt inn the computer graphics community. However,, photorealism is nott the only possiblee criteriaa forr judgingg thee valuee off ann image. In thiss paperr wee stepp back fromm thee physically–based modell that underlies manyy off thee existingg approachess to rendering,, andd insteadd considerr thee rendering problem from aa moree fundamentall view:: howw iss graphical informationn processedd by thee user?? Using