Automated visual inspection: 1981 to 1987
Computer Vision, Graphics, and Image Processing
Subpixel Measurements Using a Moment-Based Edge Operator
IEEE Transactions on Pattern Analysis and Machine Intelligence
Contour Tracking and Corner Detection in a Logic Programming Environment
IEEE Transactions on Pattern Analysis and Machine Intelligence
A survey of automated visual inspection
Computer Vision and Image Understanding
Corner detection using bending value
Pattern Recognition Letters
Subpixel Precision of Straight-Edged Shapes for Registration and Measurement
IEEE Transactions on Pattern Analysis and Machine Intelligence
Computer-aided visual inspection for integrated quality control
Computers in Industry - Special issue: computer integrated manufacturing (ICCIM '95)
Subpixel Edge Location in Binary Images Using Dithering
IEEE Transactions on Pattern Analysis and Machine Intelligence
Electric contacts inspection using machine vision
Image and Vision Computing
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This paper presents a machine vision system for automated visual inspection of plates of electric cookers, with the goal to reduce labour cost and ensure consistent product quality. A number of dimensions of an electric plate are accurately defined by using two cameras with telecentric lenses, by applying sub-pixel edge detection techniques, and by semiautomatically calibrating the system. The dimensions of plates, which are manufactured by CNC lathes, may fall in or out of prescribed tolerance standards and are as such a valuable indicator of the lathe tool blunt or breakage. Extensive experiments showed that the inspecting system is fast, accurate and robust. The machine vision system is, thus, able to keep up with the plate production process, inspect every plate and reject the defective ones.