Modeling Luminance Perception at Absolute Threshold

dc.contributor.authorKellnhofer, Petren_US
dc.contributor.authorRitschel, Tobiasen_US
dc.contributor.authorMyszkowski, Karolen_US
dc.contributor.authorEisemann, Elmaren_US
dc.contributor.authorSeidel, Hans-Peteren_US
dc.contributor.editorJaakko Lehtinen and Derek Nowrouzezahraien_US
dc.date.accessioned2015-06-23T04:49:16Z
dc.date.available2015-06-23T04:49:16Z
dc.date.issued2015en_US
dc.description.abstractWhen human luminance perception operates close to its absolute threshold, i. e., the lowest perceivable absolute values, appearance changes substantially compared to common photopic or scotopic vision. In particular, most observers report perceiving temporally-varying noise. Two reasons are physiologically plausible; quantum noise (due to the low absolute number of photons) and spontaneous photochemical reactions. Previously, static noise with a normal distribution and no account for absolute values was combined with blue hue shift and blur to simulate scotopic appearance on a photopic display for movies and interactive applications (e.g., games). We present a computational model to reproduce the specific distribution and dynamics of ''scotopic noise'' for specific absolute values. It automatically introduces a perceptually-calibrated amount of noise for a specific luminance level and supports animated imagery. Our simulation runs in milliseconds at HD resolution using graphics hardware and favorably compares to simpler alternatives in a perceptual experiment.en_US
dc.description.number4en_US
dc.description.sectionheadersPerception and Simplificationen_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume34en_US
dc.identifier.doi10.1111/cgf.12687en_US
dc.identifier.pages155-164en_US
dc.identifier.urihttps://doi.org/10.1111/cgf.12687en_US
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.subjectI.3.3 [Computer Graphics]en_US
dc.subjectPicture/Image Generationen_US
dc.subjectViewing algorithmsen_US
dc.titleModeling Luminance Perception at Absolute Thresholden_US
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