23 June 2014 Fine-correlation: inter-sample template matching
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Proceedings Volume 9257, Sensors, MEMS and Electro-Optical Systems; 92570E (2014) https://doi.org/10.1117/12.2066405
Event: Third Conference on Sensors, MEMS and Electro-Optic Systems, 2014, Skukuza, Kruger National Park, South Africa
Abstract
A new resolution refinement method is introduced for template-matching. Fine-correlation uses sample replication to re ne match-accuracy to discrete inter-sample positions. Fine-correlation can be done in both the time and frequency domain. The achievable resolution-re finement is a function of signal-to-noise ratio; signal bandwidth; template-length and template information content. Templates can easily be described to a 10 times or higher time-resolution than the incoming signal. Fine-correlation provides a method of matching in such scenarios. Possible implementations are discussed. The preferred method is chosen. A noise-level- and templatelength analysis is done illustrating achievable resolution improvement. Two implementations of Fine-correlation conclude this paper. An appendix is devoted to the derivation of the resampling DFT and resampling DHT.
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Pieter V. Reyneke, Pieter V. Reyneke, Etienne S. van der Berg, Etienne S. van der Berg, Corné de Ridder, Corné de Ridder, "Fine-correlation: inter-sample template matching", Proc. SPIE 9257, Sensors, MEMS and Electro-Optical Systems, 92570E (23 June 2014); doi: 10.1117/12.2066405; https://doi.org/10.1117/12.2066405
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