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Check Detection and Characterization in Veneer Qualifying with use of Digital Image Analysis. Bartosz PAŁUBICKI , Laurent BLÉRON, Jean-Claude BUTAUD, Rémy MARCHAL. ParisTech Cluny, LaBoMaP Rue Porte de Paris 71250 Cluny, France. IUFRO – All-Division 5 Conference
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Check Detection and Characterization in Veneer Qualifying with use of Digital Image Analysis Bartosz PAŁUBICKI, Laurent BLÉRON, Jean-Claude BUTAUD, Rémy MARCHAL ParisTech Cluny, LaBoMaP Rue Porte de Paris 71250 Cluny, France IUFRO – All-Division 5 Conference Taipei, Taiwan ‧ Oct. 29 to Nov. 2, 2007
Contents • Introduction • Hardware setup • Goal • Check detection algorithm details • Sotfware interface • Summary
Hardware Setup Recomendations • Hard image analysis for wood – different colors, inhomogeneity, light dispersing • Hardware setup very important -> high quality of image, high contrast • Repetability (environmental light independent, stabillzed voltage)
Goal • Succesful check measurement depends on both: • Good quality image (good hardware settings) and • Efficient algorithm for digital image analysis Goal: To provide an efficient algorithm for automatic detection of the lathe checks basing on the veneer image
Region Of Interest - CPU Time Saving 10 20 50
D H Coarse Check Positions
Checks Tracking Option: Very low details Option: Normal details
Check Labeling Option: Very low details Option: Normal details
Summary • Effective algorithm for lathe check detection has been presented • Few parameters possible to adjust if necessary • Output: lathe checks intervals and depths
CLUNY Wood Thank You