B - Operations – Transporting – 07 – C
Patent
B - Operations, Transporting
07
C
209/29.11
B07C 5/344 (2006.01) B07B 1/15 (2006.01) B07B 1/22 (2006.01) D21B 1/02 (2006.01)
Patent
CA 1323332
COLOR SORTING OF LUMBER ABSTRACT OF THE DISCLOSURE A system for sorting lumber using a scanning camera that generates separate red, green and in some cases blue outputs to scan selected length increments along the surface of a piece of lumber and such data collected for each color is each separately histogrammed to produce a frequency distribution of color intensity. The data is analyzed to determine the mean values for each color in the selected lengths and the lengths characterized based on these mean values into specific colors. The lumber pieces may be automatically severed into pieces having significant differences in color and the pieces of significantly different colors may be automatically collected in different groupings. In an alternative arrangement the histogram for selected color is analyzed to determine the frequency distribution and degree of frequency variability to determine if it is to be classified as vertical or flat grained. The lumber pieces may be automatically severed into pieces whenever their classification changes between flat and vertical grain and the pieces of flat grain may be automatically collected separate from those of vertical grain.
589451
Fasken Martineau Dumoulin Llp
Usnr/kockums Cancar Company
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