Noise-insensitive image optimal flow estimation using higher-order statistics
JOSA A, Vol. 26, Issue 5, pp. 1212-1220 (2009)
http://dx.doi.org/10.1364/JOSAA.26.001212
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Abstract
A new algorithm is presented that estimates the displacement vector field from two successive image frames. In the case where the sequence is severely corrupted by additive (Gaussian or not, colored) noise of unknown covariance, then second-order statistics methods do not work well. However, we have studied this topic from a viewpoint different from the above to explore the fundamental limits in image optimal flow estimation. Our scheme is based on subpixel optimal flow estimation using the bispectrum in the parametric domain. The displacement vector of a moving object is estimated by solving linear equations involving third-order holograms and the matrix containing the Dirac delta function. To prove the feasibility of the proposed method, we compared it with a phase correlation technique and the nonparametric bispectrum method described in Res. Lett. Signal Process., ID 417915 (2008) . Our results show that our method is considerably more immune to the presence of noise.
© 2009 Optical Society of America
OCIS Codes
(100.4145) Image processing : Motion, hyperspectral image processing
(110.4153) Imaging systems : Motion estimation and optical flow
ToC Category:
Imaging Systems
History
Original Manuscript: May 20, 2008
Revised Manuscript: November 21, 2008
Manuscript Accepted: December 18, 2008
Published: April 20, 2009
Virtual Issues
Vol. 4, Iss. 7 Virtual Journal for Biomedical Optics
Citation
El Mehdi Ismaili Alaoui, Elhassane Ibn-elhaj, and El Houssaine Bouyakhf, "Noise-insensitive image optimal flow estimation using higher-order statistics," J. Opt. Soc. Am. A 26, 1212-1220 (2009)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josaa-26-5-1212
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