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Optical Engineering

Investigation on convergence behaviors of the differential method for 2-D motion parameter estimation
Author(s): SangHee Lee; Kook-yeol Yoo; Jae-Kyoon Kim
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Paper Abstract

We investigate convergence behaviors of the differential method for estimation of 2-D motion parameters. While the differential method has been widely researched for motion compensated predictive video coding, little attention has been paid to its convergence properties. Based on the nonseparable exponential covariance image model, we derive theoretical estimates of update terms for translational and affine motion models. The effects of noise, spatial correlation, choice of spatial gradient measures, and the size of a region, are quantitatively analyzed in relation to the convergence speed. Some empirical results are presented to verify the analysis.

Paper Details

Date Published: 1 April 2003
PDF: 11 pages
Opt. Eng. 42(4) doi: 10.1117/1.1532335
Published in: Optical Engineering Volume 42, Issue 4
Show Author Affiliations
SangHee Lee, Thin Multimedia, Inc. (South Korea)
Kook-yeol Yoo, Yeungnam Univ. (South Korea)
Jae-Kyoon Kim, Korea Advanced Institute of Science and Technology (South Korea)


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