Skip to Main Content
Hardwood lumber scanning tests to determine NHLA lumber gradesAuthor(s): Philip A. Araman; Ssang-Mook Lee; A. Lynn Abbott; Matthew F. Winn
Source: In: Proceedings of the 3rd International Scientific Conference on Hardwood Processing (ISCHP32011). Blacksburg, Virginia. 107-113.
Publication Series: Paper (invited, offered, keynote)
Station: Southern Research Station
PDF: View PDF (435.79 KB)
DescriptionThis paper concerns the scanning, and grading of kiln-dried hardwood lumber. A prototype system is described that uses laser sources and a video camera to scan boards. The system automatically detects defects and wane, grades the boards, and then searches for higher value boards within the original board. The goal is to derive maximum commercial value based on current market lumber prices. This paper presents the results of an empirical test in which the system's grading decisions are compared with those assigned by a human expert. The tests involved 86 yellow-poplar boards and 90 red oak boards. The automated system assigned higher grades for 17% of the boards, and lower grades for 43% of the boards. The main cause of disagreement was the presence of stains on the board, both natural and mechanical, which were occasionally classified by the scanning system as defects. The system also recommended additional edging or trimming on 42% of the boards to increase the grade and value of the boards. Overall, the automated system performed well on typical cases of planed, kiln-dried boards.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationAraman, Philip A.; Lee, Ssang-Mook; Abbott, A. Lynn; Winn, Matthew F. 2011. Hardwood lumber scanning tests to determine NHLA lumber grades. In: Proceedings of the 3rd International Scientific Conference on Hardwood Processing (ISCHP32011). Blacksburg, Virginia. 107-113.
- Automated grading, upgrading, and cuttings prediction of surfaced dry hardwood lumber
- Automated Lumber Processing
- Preliminary Full-Scale Tests of the Center for Automated Processing of Hardwoods' Auto-Image
XML: View XML