METHOD FOR DETERMINING THE WOOD/BARK RATIO FROM A FLOW OF WOOD MATERIAL

摘要

The invention relates to a method for determining the wood/bark ratio from a flow of wood material (1), in which the flow is illuminated in a non-flashing manner, scanned along a transverse line with a video camera (2) with at least three channels, the line image corresponding to the line is digitalized into pixels each of which comprise intensity information, the intensity classes corresponding to the wood and the bark are determined in each channel and the pixels belonging to each class are calculated with the help of their intensity-information, and the wood/bark ratio is determined by the number of pixels situated in the different intensity classes. The dynamics of each channel are at least 10, most profitably 12 bit.