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Effect of background motion on the p...

Zhong, Huiying.

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Effect of background motion on the perceived shape of a three-dimensional object.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Effect of background motion on the perceived shape of a three-dimensional object./
Author:	Zhong, Huiying.
Description:	105 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-08, Section: B, page: 4316.
Contained By:	Dissertation Abstracts International65-08B.
Subject:	Psychology, Cognitive. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3142958
ISBN:	0496010271

Effect of background motion on the perceived shape of a three-dimensional object.
Zhong, Huiying.

Effect of background motion on the perceived shape of a three-dimensional object. - 105 p.

Source: Dissertation Abstracts International, Volume: 65-08, Section: B, page: 4316.

Thesis (Ph.D.)--University of California, Irvine, 2004.

The human visual system can construct a 3-D interpretation of a scene from 2-D retinal images, using motion parallax and structure-from-motion. Most of the previous research on the recovery of object shape from motion cues has focused on the recovery of the 3-D structure of isolated objects or surfaces. In a typical 3-D scene, however, there may be several moving objects and interactions between the motions of these objects and surfaces may affect the judged shape of an object in the scene.

ISBN: 0496010271Subjects--Topical Terms:

1017810
Psychology, Cognitive.

Effect of background motion on the perceived shape of a three-dimensional object.
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020 $a 0496010271
035 $a (UnM)AAI3142958
035 $a AAI3142958
040 $a UnM $c UnM
100 1 $a Zhong, Huiying. $3 1939796
245 1 0 $a Effect of background motion on the perceived shape of a three-dimensional object.
300 $a 105 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-08, Section: B, page: 4316.
500 $a Chair: Myron L. Braunstein.
502 $a Thesis (Ph.D.)--University of California, Irvine, 2004.
520 $a The human visual system can construct a 3-D interpretation of a scene from 2-D retinal images, using motion parallax and structure-from-motion. Most of the previous research on the recovery of object shape from motion cues has focused on the recovery of the 3-D structure of isolated objects or surfaces. In a typical 3-D scene, however, there may be several moving objects and interactions between the motions of these objects and surfaces may affect the judged shape of an object in the scene.
520 $a The effect of the speed of a translating background surface on the judged shape of a moving object was investigated with both motion parallax and structure-from-motion. Observers judged the magnitude of a concave dihedral angle translating or rotating against a frontal plane. Judged angle magnitude decreased (indicating an increase in perceived depth) with increasing background speed until the background speed reached the speed of the front edge of the angle. Judged angle magnitude then increased with background speed until the difference between the background speed and front edge speed was large. A model that was previously proposed to account for angle magnitude judgments from translations and rotations was extended to displays with a moving background. A rigidity assumption in the model was supported by the results of experiments using rigidity judgments.
520 $a The possible effect of the information about depth order specified by the relationship between the speeds of the frontal plane and the front edge in the preceding experiments was examined by manipulating transparency and dynamic occlusion. Speed of the frontal plane exhibited an effect on judged angle size similar to that found in the preceding experiments and this suggested that depth order was not the primary factor determining the angle size.
520 $a The question of whether a frontal planar structure is required to obtain the effect of background speed on angle size judgments was addressed with slanted background planes and random-speed backgrounds. The results indicated that the speed gradient in the background had a significant effect on the relationship between the background speed and perceived angle size, yet a frontal planar structure was not required to observe the effect of background speed on angle size judgments.
520 $a The results of these experiments show that background speeds significantly affected angle magnitude judgments of a moving dihedral angle. This effect cannot be account for by apparent depth order between a frontal plane and a dihedral angle or the frontal planar structure of a background.
590 $a School code: 0030.
650 4 $a Psychology, Cognitive. $3 1017810
650 4 $a Psychology, Experimental. $3 517106
690 $a 0633
690 $a 0623
710 2 0 $a University of California, Irvine. $3 705821
773 0 $t Dissertation Abstracts International $g 65-08B.
790 1 0 $a Braunstein, Myron L., $e advisor
790 $a 0030
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3142958