Approximationorder of the lap optical flow algorithm
Refereed conference paper presented and published in conference proceedings


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AbstractEstimating the displacements between two images is often addressed using a small displacement assumption, which leads to what is known as the optical flow equation. We study the quality of the underlying approximation for the recently developed Local All-Pass (LAP) optical flow algorithm, which is based on another approach - displacements result from filtering. While the simplest version of LAP computes only first-order differences, we show that the order of LAP approximation is quadratic, unlike standard optical flow equation based algorithms for which this approximation is only linear. More generally, the order of approximation of the LAP algorithm is twice larger than the differentiation order involved. The key step in the derivation is the use of Padé approximants.
All Author(s) ListBlu T., Moulin P., Gilliam C.
Name of ConferenceIEEE International Conference on Image Processing, ICIP 2015
Start Date of Conference27/09/2015
End Date of Conference30/09/2015
Place of ConferenceQuebec City
Country/Region of ConferenceCanada
Detailed descriptionorganized by IEEE,
Year2015
Month12
Day9
Volume Number2015-December
Pages48 - 52
ISBN9781479983391
ISSN1522-4880
LanguagesEnglish-United Kingdom
Keywordsall-pass filtering, approximation, Optical flow, Padé approximante

Last updated on 2020-11-09 at 01:11