Test of the Singh-Anderson Model of Transparency
| Autor: | Osvaldo Da Pos, Sergio Cesare Masin, Marco Tommasi |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Adult
Male achromatic transparency transparency model Value (computer science) Experimental and Cognitive Psychology Models Psychological 050105 experimental psychology law.invention Contrast Sensitivity Combinatorics 03 medical and health sciences 0302 clinical medicine law Humans 0501 psychology and cognitive sciences Vision test Transparency (data compression) Anderson impurity model Independence (probability theory) Mathematics Depth Perception Vision Tests 05 social sciences 030229 sport sciences Sensory Systems Pattern Recognition Visual Achromatic lens Visual Perception Female Constant (mathematics) Photic Stimulation |
| Zdroj: | Perceptual and Motor Skills. 104:1367-1374 |
| ISSN: | 1558-688X 0031-5125 |
| Popis: | A new model of achromatic transparency has been recently proposed by Singh and Anderson as an alternative to the model proposed long ago by Metelli. The study reported here compared these models using achromatic stimuli consisting of a transparent disk on a background formed by two adjoining rectangles, with the common border of the rectangles dividing the disk in half. Let a and b denote the luminances of the left and right parts of the background, respectively, and let p and q denote the luminances of the left and right parts of the disk, respectively. The value of b was varied for fixed values of a, p, and q. For these values the Singh-Anderson model predicts that the perceived extent of transparency T of the disk is constant with b, while Metelli's model predicts that T decreases as b increases. Participants rated T. The results confirm the prediction of Metelli's model. It is also shown that the Singh-Anderson model is invalid in principle in that, unlike Metelli's model, it fails to capture the principle of independence of the effects of a, b, p, and q on T. |
| Databáze: | OpenAIRE |
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