Development of an Automatic Detection System for Knots Appearing on the Surface of Sugi Laminae with a Two-Dimensional Three-Charge Couple Device Color Camera - 九大コレクション

＜紀要論文＞
Development of an Automatic Detection System for Knots Appearing on the Surface of Sugi Laminae with a Two-Dimensional Three-Charge Couple Device Color Camera

作成者	作成者名 Ohuchi, Takeshi 大内, 毅オオウチ, タケシ所属機関所属機関名 Faculty of Agriculture, Kyushu University
	作成者名 Akasaka, Ryo 赤坂, 亮アカサカ, リョウ所属機関所属機関名 Faculty of Humanities,Kyushu Lutheran College
	作成者名 Suga, Kazumi 菅, 和美スガ, カズミ所属機関所属機関名 Faculty of Agriculture, Kyushu University
	著者識別子 K001539 作成者名 Murase, Yasuhide 村瀬, 安英ムラセ, ヤスヒデ所属機関所属機関名 Faculty of Agriculture, Kyushu University
本文言語	英語
出版者	Faculty of Agriculture, Kyushu University
出版者	九州大学大学院農学研究院
発行日	2006-02-01
収録物名	九州大学大学院農学研究院紀要
巻	51
号	1
開始ページ	29
終了ページ	32
出版タイプ	Version of Record
アクセス権	open access
Crossref DOI	https://doi.org/10.5109/4705
関連DOI	Journal of the Faculty of Agriculture, Kyushu University \|\| 51(1) \|\| p029-032
	九州大学大学院農学研究院紀要 \|\| 51(1) \|\| p029-032
	http://www.agr.kyushu-u.ac.jp/index.html
関連URI	Journal of the Faculty of Agriculture, Kyushu University \|\| 51(1) \|\| p029-032
	九州大学大学院農学研究院紀要 \|\| 51(1) \|\| p029-032
	http://www.agr.kyushu-u.ac.jp/index.html
関連情報	Journal of the Faculty of Agriculture, Kyushu University \|\| 51(1) \|\| p029-032
	九州大学大学院農学研究院紀要 \|\| 51(1) \|\| p029-032
	http://www.agr.kyushu-u.ac.jp/index.html

ファイル	ファイルタイプ	サイズ	閲覧回数	説明
p029	pdf	433 KB	401

PISSN	0023-6152
NCID	AA00697606
レコードID	4705
査読有無	査読無
ISSN	0023-6152
NCID	AA00697606
注記	The laminae grading for structural glulam timber is restricted by the bending strength and the ratio of knot diameter according to Japanese Agricaltural Standard (JAS) . However, visual grading is done by workers in most manifacturing factories because there are no clear regulations regarding the measuring method of the ratio of knot diameter. Therefore, the development of a system that could automatically detect knots on a material's surface is very desirable. In this study, a system for automatically detecting the shape (position and area) of knots, which appear on the laminae's surface with a two-dimensional three-Charge Couple Device (CCD) color camera, was developed. The main results obtained are summarized as followes: (1) an automatic detection system for knots appearing on the surface of wood was constructed; (2) this system was composed of a picture-processing device (a two-dimensionial three-CCD color camera and controller), lighting equipment and a personal computer (PC) which controlles all devices and collects sampling data; (3) the system could measure the ratio of knot diameter and detect the existance of knot, and the average measurement time of one image was about 2.6 seconds. Therefore, this system could work at a feed speed of 77mm/s.
登録日	2009.04.22
更新日	2022.11.11