MEASUREMENT OF WOOD QUALITY PARAMETERS FROM ANNUAL RINGS USING COLOR ANALYSIS WITH DIGITAL IMAGES

Petri Österberg, Heimo Ihalainen, Risto Ritala

Abstract

In this paper we present an image analysis method which provides wood quality parameters from board and log end images. Our analysis recognizes annual rings in prepared cutting surface despite of varying color pattern or lighting. After locating annual rings accurately, proportions of earlywood and latewood can be measured globally and locally in the image. Our method is based on combining moving window to principle component analysis (PCA). Furthermore, we apply various filtering methods to enhance result matrixes.

Keywords

Image Analysis, Wood Quality, PCA, annual rings

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PWC-2006-TC14-042u.pdf

DOI

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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