Maximum-likelihood optical flow estimation using differential constraints. Tsai, C, Galatsanos, N P, & Katsaggelos, A K Nsip, 1999. abstract bibtex Many optical flow estimation techniques are based on the differential optical flow equation. For these techniques, a locally constant flow model is typically used to allow the construction of an over-determined system of constraint equations. In this paper, the problem of solving the system of optical flow equations using a constraint total least squares (CTLS) approach is investigated. It is shown that by modifying the CTLS approach it becomes identical to a maximum likelihood (ML) approach to the problem. This modification improves the CTLS estimates especially when the estimation window size is small, as is demonstrated experimentally.
@article{Aggelosf,
abstract = {Many optical flow estimation techniques are based on the differential optical flow equation. For these techniques, a locally constant flow model is typically used to allow the construction of an over-determined system of constraint equations. In this paper, the problem of solving the system of optical flow equations using a constraint total least squares (CTLS) approach is investigated. It is shown that by modifying the CTLS approach it becomes identical to a maximum likelihood (ML) approach to the problem. This modification improves the CTLS estimates especially when the estimation window size is small, as is demonstrated experimentally.},
author = {Tsai, C and Galatsanos, N P and Katsaggelos, A K},
journal = {Nsip},
keywords = {&account &address &adjacency &age &composed &const},
pages = {53--56},
title = {{Maximum-likelihood optical flow estimation using differential constraints}},
year = {1999}
}
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