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Optical Engineering

Effect of signal truncation on centroid location error estimation
Author(s): Ikram E. Abdou
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Paper Abstract

There are many researchers who propose calculating a signal centroid using the pixels nearest to the signal peak. Thus, for a two-dimensional rectangular grid they use only nine pixels centered around the signal peak,1–3 and for a one-dimensional signal they use only three pixels.4 This truncation simplifies and speeds up the centroid calculation without affecting the centroid accuracy if the signal is limited to this small local region. In addition, when the signal is corrupted by noise, there is an optimum window size that balances the effects of systematic error and the error due to the random noise.

Paper Details

Date Published: 1 April 1996
PDF: 2 pages
Opt. Eng. 35(4) doi: 10.1117/1.600609
Published in: Optical Engineering Volume 35, Issue 4
Show Author Affiliations
Ikram E. Abdou, SRI International (United States)


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