| 摘要 |
A process and equipment for an automated lumber end-scan system include s a conveyer to carry sawn lumber in a direction transverse to the axis of the boards, a light source to illuminate at least one butt end of each board as it passe s by a scanning region, at least one digital camera to capture an image of each end face, and a processing unit to convert the digital signal into useable information . The digital signal is analyzed to obtain information about both natural and manufacturing defects that might be present at the end of the lumber and also to obtain further information about the properties of the lumber from the location of the pith , the growth rings and the grain pattern. This information may be used to augment the analysis of defects present in the entire board for determination of the fin al grade within an automatic lumber grading system. The system can also be used on a stand-alone basis and integrated into a non-automated grading area as a grad er assist device.
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