Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Symmetric Non-Rigid Structure from Motion for Category-Specific Object
  Structure Estimation   Many objects, especially these made by humans, are symmetric, e.g. cars and
aeroplanes. This paper addresses the estimation of 3D structures of symmetric
objects from multiple images of the same object category, e.g. different cars,
seen from various viewpoints. We assume that the deformation between different
instances from the same object category is non-rigid and symmetric. In this
paper, we extend two leading non-rigid structure from motion (SfM) algorithms
to exploit symmetry constraints. We model the both methods as energy
minimization, in which we also recover the missing observations caused by
occlusions. In particularly, we show that by rotating the coordinate system,
the energy can be decoupled into two independent terms, which still exploit
symmetry, to apply matrix factorization separately on each of them for
initialization. The results on the Pascal3D+ dataset show that our methods
significantly improve performance over baseline methods.

4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas