Stereo Matching between Three Images by Iterative Refinement in PVS(Regular Section)

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概要

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• In the field of computer vision and computer graphics, Image-Based-Rendering (IBR) methods are often used to synthesize images from real scene. The image synthesis by IBR requires dense correct matching points in the images. However, IBR does not require 3D geometry reconstruction or camera calibration in Euclidean geometry. On the other hand, 3D reconstructed model can easily point out the occlusion in images. In this paper, we propose an approach to reconstruct 3D shape in a voxel space, which is named Projective Voxel Space (PVS). Since PVS is defined by projective geometry, it requires only weak calibration. PVS is determined by rectifications of the epipolar lines in three images. Three rectified images are orthogonal projected images of a scene in PVS, so processing about image projection is easy in PVS. In both PVS and Euclidean geometry, a point in an image is on a projection from a point on a surface of the object in the scene. Then the other image might have a correct matching point without occlusion, or no matching point because of occlusion. This is a kind of restriction about searching matching points or surface of the object. Taking advantage of simplicity of projection in PVS, the correlation values of points in images are computed, and the values are iteratively refined using the restriction described above. Finally, the shapes of the objects in the scene are acquired in PVS. The reconstructed shape in PVS does not have similarity to 3D shape in Euclidean geometry. However, it denotes consistent matching points in three images, and also indicates the existence of occluded points. Therefore, the reconstructed shape in PVS is sufficient for image synthesis by IBR.

• 社団法人電子情報通信学会の論文
• 2003-01-01

著者

• Kimura Makoto

  Department of Mathematics, Faculty of Science and Engineering, Shimane University

• SAITO Hideo

  Department of Urology, Tohoku University Hospital

• Kimura M

  Laboratory Of Biochemistry Faculty Of Agriculture Graduate School Kyushu University

• Saito Hideo

  Department Of Chemistry Graduate School Of Pure And Applied Sciences University Of Tsukuba

• Kawabe Masato

  United Graduate School Of Agricultural Science Tokyo University Of Agriculture And Technology (tuat)

• KANADE Takeo

  Digital Human Research Center, National Institute of Advance Industrial Science and Technology

• KANADE Takeo

  Robotics Institute, Carnegie Mellon University

• Kanade T

  Digital Human Research Center National Institute Of Advance Industrial Science And Technology

• Kanade Takeo

  Robotics Institute Carnegie Mellon University

• Saito H

  Department Of Information And Computer Science Keio University

• Kimura Makoto

  Digital Human Research Center Aist Japan

• Kimura Makoto

  Department Of Applied Biochemistory Utsunomiya University

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