Feature specific segmentation in perceived structure-from-motion

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Motion information is important to vision for extracting the 3-D (three- dimensional) structure of an object, as evidenced by the compelling percept of three-dimensionality attainable in displays which are purely motion- defined. It has recently been shown that when subjects view a rotating transparent cylinder of dots simulated with parallel projection, they rarely perceive rotation reversals which are physically introduced (Treue, Andersen, Ando and Hildreth, Vision Research, 35;1995:139-148). We show however that when the elements defining the cylinder are oriented, the number of perceived reversals increases systematically to near maximum as the difference between element orientations on the two surfaces increases. These results imply that structure-from-motion mechanisms are capable of exploiting local feature differences between the different surfaces of a moving object.




Li, H. C. O., & Kingdom, F. A. A. (1999). Feature specific segmentation in perceived structure-from-motion. Vision Research, 39(5), 881–886. https://doi.org/10.1016/S0042-6989(98)00247-8

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