General Trajectory Prior for Non-Rigid Reconstruction
Abstract
Trajectory basis Non-Rigid Structure From Motion (NRSFM) currently faces two problems: the limit of reconstructability and the need to tune the basis size for different sequences. This paper provides a novel theoretical bound on 3D reconstruction error, arguing that the existing definition of reconstructability is fundamentally flawed in that it fails to consider system condition. This insight motivates a novel strategy whereby the trajectory's response to a set of high-pass filters is minimised. The new approach eliminates the need to tune the basis size and is more efficient for long sequences. Additionally, the truncated DCT basis is shown to have a dual interpretation as a high-pass filter. The success of trajectory filter reconstruction is demonstrated quantitatively on synthetic projections of real motion capture sequences and qualitatively on real image sequences.
Cite
Text
Valmadre and Lucey. "General Trajectory Prior for Non-Rigid Reconstruction." IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2012. doi:10.1109/CVPR.2012.6247826Markdown
[Valmadre and Lucey. "General Trajectory Prior for Non-Rigid Reconstruction." IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2012.](https://mlanthology.org/cvpr/2012/valmadre2012cvpr-general/) doi:10.1109/CVPR.2012.6247826BibTeX
@inproceedings{valmadre2012cvpr-general,
title = {{General Trajectory Prior for Non-Rigid Reconstruction}},
author = {Valmadre, Jack and Lucey, Simon},
booktitle = {IEEE/CVF Conference on Computer Vision and Pattern Recognition},
year = {2012},
pages = {1394-1401},
doi = {10.1109/CVPR.2012.6247826},
url = {https://mlanthology.org/cvpr/2012/valmadre2012cvpr-general/}
}