publications:
- title: "Regularized Pel-Recursive Motion Estimation Using Generalized Cross-Validation and Spatial Adaptation"
  author:
  - name: "Vania Vieira Estrela"
    link: "http://academic.research.microsoft.com/Publication/584912/regularized-pel-recursive-motion-estimation-using-generalized-cross-validation-and-spatial"
  - name: "Luís Antonio Rivera"
    link: "http://academic.research.microsoft.com/Author/1161431/luis-a-rivera"
  - name: "Paulo Cesar Beggio"
    link: "http://lattes.cnpq.br/8170237658770465"
  - name: "Ricardo Tadeu Lopes"
    link: "http://academic.research.microsoft.com/Author/4751306/ricardo-tadeu-lopes"
  - name: "Vania Vieira Estrela"
    link: "http://academic.research.microsoft.com/Publication/584912/regularized-pel-recursive-motion-estimation-using-generalized-cross-validation-and-spatial"
  - name: "Ricardo Tadeu Lopes"
    link: "http://academic.research.microsoft.com/Author/4751306/ricardo-tadeu-lopes"
  - name: "Vania Vieira Estrela"
    link: "https://www.researchgate.net/profile/Vania_Estrela?ev=hdr_xprf&_sg=l2it7UJUf2g4wSUGGVaee_gK6wbXK75hN_Rt6P_99NMr2_HObKqAkOwo4ujJMZp7"
  - name: "Vania Vieira Estrela"
    link: "http://academic.research.microsoft.com/Publication/584912/regularized-pel-recursive-motion-estimation-using-generalized-cross-validation-and-spatial"
  - name: "Vania Vieira Estrela"
    link: "https://www.researchgate.net/profile/Vania_Estrela?ev=hdr_xprf&_sg=l2it7UJUf2g4wSUGGVaee_gK6wbXK75hN_Rt6P_99NMr2_HObKqAkOwo4ujJMZp7"
  - name: "Vania Vieira Estrela"
    link: "http://academic.research.microsoft.com/Author/3361386/vania-v-estrela"
  year: "2003"
  doi: "http://csdl.computer.org/comp/proceedings/sibgrapi/2003/2032/00/20320331abs.htm"
  abstract: "The computation of 2-D optical flow by means of regularized pel-recursive algorithms raises a host of issues, which include the treatment of outliers, motion discontinuities and occlusion among other problems. We propose a new approach which allows us to deal with these issues within a common framework. Our approach is based on the use of a technique called Generalized Cross-Validation to estimate the best regularization scheme for a given pixel. In our model, the regularization parameter is a matrix whose entries can account for diverse sources of error. The estimation of the motion vectors takes into consideration local properties of the image following a spatially adaptive approach where each moving pixel is supposed to have its own regularization matrix. Preliminary experiments indicate that this approach provides robust estimates of the optical flow."
  links:
    doi: "http://csdl.computer.org/comp/proceedings/sibgrapi/2003/2032/00/20320331abs.htm"
  tags:
  - " spatial adaptation"
  - " image motion estimation "
  - "2D optical flow "
  - "source-to-source"
  - "C++"
  - " generalized cross-validation technique "
  - " occlusion "
  - " regularization matrix "
  - " regularized pel-recursive algorithms "
  - "systematic-approach"
  researchr: "https://researchr.org/publication/EstrelaRBL03"
  cites: 10
  citedby: 5
  pages: "331-338"
  booktitle: "sibgrapi"
  kind: "inproceedings"
  key: "EstrelaRBL03"