Reduction of interpolation errors when using local correlation tracking for motion detection

Details Reduction of interpolation errors when using local correlation tracking for motion detection Reduction of interpolation errors when using local correlation tracking for motion detection

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003soph..217...69p&link_type=abstract

Solar Physics, v. 217, Issue 1, p. 69-78 (2003).

Physics

13

Scientific paper

Local correlation tracking (LCT) is a commonly used motion tracking technique, particularly in solar physics. When used to track motions smaller than one pixel per time sample, interpolation of the original data is required. We demonstrate that it is possible to introduce large systematic errors by using an inappropriate interpolation method, and describe how to avoid these errors. The effect of these errors on the calculated velocity field is demonstrated on simulated solar granulation data.

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