Optimum filtering and FFT-based algorithm for tree ring measurements

Carlos Miguel Pereira Rodrigues; Joao Lemos Pinto

doi:10.1117/12.441509

20 September 2001 Optimum filtering and FFT-based algorithm for tree ring measurements

Carlos Miguel Pereira Rodrigues, Joao Lemos Pinto

Proceedings Volume 4552, Image Matching and Analysis; (2001) https://doi.org/10.1117/12.441509
Event: Multispectral Image Processing and Pattern Recognition, 2001, Wuhan, China

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.

Citation Download Citation

Carlos Miguel Pereira Rodrigues and Joao Lemos Pinto "Optimum filtering and FFT-based algorithm for tree ring measurements", Proc. SPIE 4552, Image Matching and Analysis, (20 September 2001); https://doi.org/10.1117/12.441509

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