NEW APPROACH TO WOOD DEFECTS DETECTION

Modern wood processing requests access to wood with the aim of maximizing utilization of wood in qualitative and quantitative terms. One of main obstacle to this objective are wood defects which are unavoidable flaws in tree growth and development of wood matter (knots, cracks, discoloration, etc.). The demand for costeffective and rapid production with as high economic utilization of raw materials led us to the development of high-tech scanners which identify the surface of wood elements more effectively than human eye. Information about identified errors from scanned surface of wood elements is instantly received. This information proposed us a model of cutting elements and associated classes with the aim of maximizing the qualitative or quantitative utilization. Considering that all wood defects from discoloration to cracks are computer programmed with objective view, we are left to assume that the observers will not just look at certain wood element as well as scanner. Their observation is subjective and a matter of the experience and perception of certain changes or anomalies on wood element. The aim of this study was to determine wood defects with industrial scanner as an objective observation and detecting wood defects with human eye as an subjective perception of certain wood defects having regard that human eyes also have its own limits. Wood defects were investigated on wood elements from Slavonian oak (Quercus robur L.).