A prototype vision system for analyzing CT imagery of hardwood logs
- 1 August 1996
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Systems, Man, and Cybernetics, Part B (Cybernetics)
- Vol. 26 (4) , 522-532
- https://doi.org/10.1109/3477.517028
Abstract
To fully optimize the value of material produced from a hardwood log requires information about type and location of internal defects in the log. This paper describes a prototype vision system that automatically locates and identifies certain classes of defects in hardwood logs. This system uses computer tomograph (CT) imagery. The system uses a number of processing steps. A set of basic features are defined to capture basic 3-D characteristics of wood defects. For 3-D object (defect) recognition, a set of hypothesis tests are employed that use this set of features. To further help cope with the above mentioned variability, the Dempster-Shafer theory of evidential reasoning is used to classify defect objects. Results of preliminary experiments employing two different types of hardwood logs are given.Keywords
This publication has 14 references indexed in Scilit:
- Determining a maximum value yield of a log using an optical log scannerPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Robust Spatial Autoregressive Modeling for Hardwood Log InspectionJournal of Visual Communication and Image Representation, 1994
- Context-based vision: recognizing objects using information from both 2D and 3D imageryPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1991
- Improved restoration of noisy images by adaptive least-squares post-filteringSignal Processing, 1990
- Pattern directed extraction and characterization of defect configurations in solid log modelsArtificial Intelligence in Engineering, 1989
- Robust image modeling for classification of surface defects on wood boardsIEEE Transactions on Systems, Man, and Cybernetics, 1989
- An analysis of four uncertainty calculiIEEE Transactions on Systems, Man, and Cybernetics, 1988
- Evaluation of wood characteristics: Internal scanning of the material by microwavesWood Science and Technology, 1987
- On evidential reasoning in a hierarchy of hypothesesArtificial Intelligence, 1986
- Upper and Lower Probabilities Induced by a Multivalued MappingThe Annals of Mathematical Statistics, 1967