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- Title
Non-Rigid Structure Estimation in Trajectory Space from Monocular Vision.
- Authors
Yaming Wang; Lingling Tong; Mingfeng Jiang; Junbao Zheng
- Abstract
In this paper, the problem of non-rigid structure estimation in trajectory space from monocular vision is investigated. Similar to the Point Trajectory Approach (PTA), based on characteristic points' trajectories described by a predefined Discrete Cosine Transform (DCT) basis, the structure matrix was also calculated by using a factorization method. To further optimize the non-rigid structure estimation from monocular vision, the rank minimization problem about structure matrix is proposed to implement the non-rigid structure estimation by introducing the basic low-rank condition. Moreover, the Accelerated Proximal Gradient (APG) algorithm is proposed to solve the rank minimization problem, and the initial structure matrix calculated by the PTA method is optimized. The APG algorithm can converge to efficient solutions quickly and lessen the reconstruction error obviously. The reconstruction results of real image sequences indicate that the proposed approach runs reliably, and effectively improves the accuracy of non-rigid structure estimation from monocular vision.
- Subjects
MONOCULAR vision; DISCRETE cosine transforms; FACTORIZATION; QUANTUM mechanics; GRADIENT-index devices; ALGORITHMS
- Publication
Sensors (14248220), 2015, Vol 15, Issue 10, p25730
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s151025730