| ECVision indexed and annotated bibliography of cognitive computer vision publications This bibliography was created by Hilary Buxton and Benoit Gaillard, University of Sussex, as part of ECVision Specific Action 8-1 The complete text version of this BibTeX file is available here: ECVision_bibliography.bib
S. Edelman and H. Buelthoff
ABSTRACT
How does the human visual system represent and recognize novel three-dimensional objects? Variation in response time over different views of objects, obtained in subordinate-level recognition tasks, hints that objects may be represented by collections of specific views, rather than by viewpoint-independent models. We report results of four experiments that provide further evidence in support of the viewpoint-specific representation hypothesis. In the first experiment we tested the recognition of objects seen repeatedly from the same set of viewpoints. Although the response times in this experiment became uniform with practice, the differences in error rate for the different views remained stable. In the second experiment, this result was replicated in the presence of a variety of depth cues in the test views, including binocular stereo. In the third experiment, recognition under monocular and stereoscopic conditions was compared over four testing sessions. In those two experiments, we found that the addition of stereo depth reduced the mean error rate, but did not affect the general pattern of performance over different views, and its development with practice. Finally, the fourth experiment probed the ability of subjects to generalize recognition to unfamiliar views of objects previously seen at a limited range of attitudes, both under mono and stereo. The same increase in the error rate with misorientation relative to the training attitude was obtained in the two conditions. Taken together, these results support the notion that 3D objects are represented by multiple specific views, possibly augmented by partial viewer-centered three-dimensional information, if it is available through stereopsis. |
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