Non-rigidity induced by luminance gratings in structure-from-motion displays
An illusory motion between the brightest and darkest strips of luminance gratings used as texture over a slanted plane and rotating around a vertical axis was observed. This effect could not be expected from the theoretical analysis of structure-from-motion displays. The conditions for the perceived...
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| Argitaratua izan da: | URI:https://journals.openedition.org/cpl, |
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| Egile nagusia: | |
| Formatua: | Article ou chapitre numérique |
| Hizkuntza: | Anglais |
| Argitaratua: |
Current psychology letters
2009
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| Sarrera elektronikoa: | Accès Université d'Orléans et IFPM Accès Université d'Orléans et IFPM |
| Gaia: | An illusory motion between the brightest and darkest strips of luminance gratings used as texture over a slanted plane and rotating around a vertical axis was observed. This effect could not be expected from the theoretical analysis of structure-from-motion displays. The conditions for the perceived non-rigidity produced by the luminance gratings were evaluated in Experiment 1. The results showed that the symmetry of the luminance profile, the slant of the planes and the motion direction modified the perceived orientation only of the brightest stripes. The effect is not due to the interpretation of the brightness variation of the moving gratings as caused by a stationary light source (Experiment 2) or by motion sharpening of the blurred edges in the gratings (Experiment 3). Potential explanations of the observed effect based on interaction between the processes of brightness filling-in and the motion information processing are discussed. |
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