In defense of orthonormality constraints for nonrigid structure from motion

@article{Akhter2009InDO,
  title={In defense of orthonormality constraints for nonrigid structure from motion},
  author={Ijaz Akhter and Yaser Sheikh and Sohaib Khan},
  journal={2009 IEEE Conference on Computer Vision and Pattern Recognition},
  year={2009},
  pages={1534-1541}
}
In factorization approaches to nonrigid structure from motion, the 3D shape of a deforming object is usually modeled as a linear combination of a small number of basis shapes. The original approach to simultaneously estimate the shape basis and nonrigid structure exploited ortho-normality constraints for metric rectification. Recently, it has been asserted that structure recovery through ortho-normality constraints alone is inherently ambiguous and cannot result in a unique solution. This… CONTINUE READING
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An Introduction to Linear Algebra

  • L. Mirsky
  • Courier Dover Publications
  • 1990

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