Modeling Luminance Perception at Absolute Threshold

When 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 physiolo...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:Computer graphics forum Ročník 34; číslo 4; s. 155 - 164
Hlavní autoři: Kellnhofer, Petr, Ritschel, Tobias, Myszkowski, Karol, Eisemann, Elmar, Seidel, Hans-Peter
Médium: Journal Article
Jazyk:angličtina
Vydáno: Oxford Blackwell Publishing Ltd 01.07.2015
Témata:
Categories and Subject Descriptors (according to ACM CCS)
Computer animation
Computer graphics
Computer simulation
Games
Human body
I.3.3 [Computer Graphics]: Picture/Image Generation-Viewing algorithms
Lighting
Luminance
Noise
Perception
Photons
Spontaneous
Studies
Thresholds
United States > US
ISSN:0167-7055, 1467-8659
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:When 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.
Bibliografie:ark:/67375/WNG-W09S0Q4N-G
ArticleID:CGF12687
istex:0D66366838F953C92701278799D0562CB08DEE8A
Supporting Information
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 14
ObjectType-Article-1
ObjectType-Feature-2
content type line 23
ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.12687