Author(s)

D.T. Pham & R.J. Alcock

Abstract

1 Recent advances in intelligent inspection of wood boards D.T. Pham, R.J. Alcock Manufacturing Engineering Centre, Systems Division, School of Engineering, University of Wales Cardiff, P.O. Box 688, Newport Road, Cardiff, CF2 3TE, UK. ABSTRACT Automated Visual Inspection (AVI) is being proposed for the task of inspecting wood sheets for quality control. The motivation for this is that currently, the human graders employed for the task can only perform inspection with an accuracy of around 60%. For wood inspection, AVI operates by employing a camera to acquire an image of the sheet and then utilising appropriate image processing hardware and software routines to find and classify surface defects. A typical AVI framework includes the stages of image acquisition, image enhancement, segmentation, feature extraction, classification and grading. The image acquisition stage obtains an image of the sheet. Image enhancement improves the quality of the acquired image to facilitate segmentation. Frequ

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