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Proceedings Paper

Optimum filtering and FFT-based algorithm for tree ring measurements
Author(s): Carlos Miguel Pereira Rodrigues; Joao Lemos Pinto
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Paper Abstract

We have developed a FFT based algorithm for tree rings measurements. First we apply a median circular filter to the rings image. Then we divide the image in lines and process each one individually. Each line is filtered and binarized in windows. The dimensions of the filter and window are related by a formula and vary along the line. The window dimension is based in the period of the wave that best fits in each section of the line.

Paper Details

Date Published: 20 September 2001
PDF: 5 pages
Proc. SPIE 4552, Image Matching and Analysis, (20 September 2001); doi: 10.1117/12.441509
Show Author Affiliations
Carlos Miguel Pereira Rodrigues, Univ. de Aveiro (Portugal)
Joao Lemos Pinto, Univ. de Aveiro (Portugal)

Published in SPIE Proceedings Vol. 4552:
Image Matching and Analysis
Bir Bhanu; Jun Shen; Tianxu Zhang, Editor(s)

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