29 European Conference on Visual Perception
St-Petersburg, Russia
20-25 August 2006


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ECVP2006 Abstract




Monocular versus binocular perception of mirror anamorphoses
      K Brecher    
Departments of Astronomy and Physics, Boston University, 725 Commonwealth Avenue, Boston, MA 02215, USA
  brecher@bu.edu
 

Although artists have produced mirror anamorphoses for nearly four centuries, little has been written about their appearance when viewed monocularly versus binocularly. Cylindrical anamorphoses provide conflicting visual signals for the location of the observed image. At typical viewing distances of 30 – 60 cm for cylinder mirrors of diameter 3 – 6 cm, each eye is presented with a different image. The depth cues from binocular disparity, convergence and accommodation are inconsistent with the object location deduced from the monocular cues in the virtual mirror image. Direct comparisons between real objects and reflected images of anamorphed photographs of the same objects at the same physical scale make these differences apparent. We have made use of both three-dimensional objects and two-dimensional pictures to examine the differences between monocular, binocular and synoptic (the same image presented to both eyes) viewing of their reflected anamorphed images. Preliminary studies suggest that monocular and synoptic viewing of anamorphoses elicit more “realistic” percepts of the source objects than does binocular viewing. Experiments comparing the appearances of real objects with their anamorphed images viewed on curved surfaces offers a novel way to explore the relative weight placed by the human visual system on the various depth cues.

Support:
Research supported by U. S. NSF Grant # DUE-0125992.

Presentation Website:

Keywords:
depth perception
binocular vision
anamorphosis

Presentation:
Binocular and Stereo Vision
Poster: Monday, 21 August 2006; 10:30-11:30  /  Attended: 10:30-11:30

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