Abstract
We have developed a system for automatically sketching patterns on the surface of porcelain using a Slit-light method which is one type of three-dimensional image measurement. This system has two parts. One is a measurement system of the three-dimensional shape of porcelain piece, and the other is an automatical sketching system of patterns by using the result of three-dimensional measurement. Since we classified porcelain pieces into two types according to their shape, two three-dimensional measurement systems were developed. In these measurement systems, we proposed a calibration method using bilinear interpolation in order to calculate values of three-dimensional coordinates simply and speedily. This calibration could absorb errors such as lens distortion and mechanical errors. The automatical sketching system was realized by linking three-dimensional measurement systems and a three-dimensional CAD system.
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