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Projective Reconstruction Method for 3D modeling from Un-calibrated Image Sequence  

Hong Hyun-Ki (Dept. of Image Eng., Graduate School of Advanced Imaging Science Multimedia & Film, chung-Ang Univ.)
Jung Yoon-Yong (Dept. of Image Eng., Graduate School of Advanced Imaging Science Multimedia & Film, chung-Ang Univ.)
Hwang Yong-Ho (Dept. of Image Eng., Graduate School of Advanced Imaging Science Multimedia & Film, chung-Ang Univ.)
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Abstract
3D reconstruction of a scene structure from un-calibrated image sequences has been long one of the central problems in computer vision. For 3D reconstruction in Euclidean space, projective reconstruction, which is classified into the merging method and the factorization, is needed as a preceding step. By calculating all camera projection matrices and structures at the same time, the factorization method suffers less from dia and error accumulation than the merging. However, the factorization is hard to analyze precisely long sequences because it is based on the assumption that all correspondences must remain in all views from the first frame to the last. This paper presents a new projective reconstruction method for recovery of 3D structure over long sequences. We break a full sequence into sub-sequences based on a quantitative measure considering the number of matching points between frames, the homography error, and the distribution of matching points on the frame. All of the projective reconstructions of sub-sequences are registered into the same coordinate frame for a complete description of the scene. no experimental results showed that the proposed method can recover more precise 3D structure than the merging method.
Keywords
3D Reconstruction; Camera Calibration; Image Sequence; Projective Reconstruction; Factorization;
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