Title:
原木の３次元形状測定装置および方法
Document Type and Number:
Japanese Patent JP5591466
Kind Code:
B2
Abstract:
An apparatus and a method for measuring three-dimensional shape of a wood block are disclosed. A planar light beam is projected by a light emitting device against a wood block rotatably supported on its tentative spin axis in such a way that two continuous lines extending parallel to the tentative spin axis for the entire block length are illuminated on the outer peripheral surface of the block. The block with the illuminated lines is photographed at a plurality of its angular positions by a imaging device. Based on data of the photographed line images, distances between the tentative spin axis and each of the illuminated lines on the outer peripheral surface of the block are computed at a plurality of cross-sections of the block along the tentative spin axis. Distances from the tentative spin axis to the outer peripheral surface of the block, including shapes of various irregularities on the surface of the block, are measured.
Inventors:
Noriyuki Hiraoka
Application Number:
JP2008285011A
Publication Date:
September 17, 2014
Filing Date:
November 06, 2008
Export Citation:
Assignee:
Meinan Machinery Works, Inc.
International Classes:
G01B11/24; B27C7/04; B27L5/02
Attorney, Agent or Firm:
Mandarin orange tree Kazuyuki
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