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The role of parsing in high-level motion processing.

The authors describe a high-level system for perceiving the motion of objects. An alternate type of apparent motion display which reveals new, fundamental properties of motion processing is discussed. This type of display is called Transformational Apparent Motion because it create impressions of changing figural shape, not just changing position. This system depends on a figure-, not image-centered parsed scene description based on mostly on static figural cues. Furthermore, the authors show that the parsing process uses information from the motion's past and can override local motion signals. The authors conclude that Transformational Apparent Motion reveals several properties of apparent motion that are not obvious in standard apparent motion displays. In particular, the matching stage appears to operate on a parsed scene descriptions where contour, continuity, color, textures, and shape play a major role, because they aid in the parsing process. (PsycINFO Database Record (c) 2007 APA, all rights reserved)



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