Importance

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Abstract

The method for automatically correcting deflection of a stylus in a digitizing device enables correction of the displacement of the stylus. The coefficient of deflection correction is calculated by utilizing the fact that the displacement and deflection of the stylus are both in proportion to the contact pressure between the stylus and a three-dimensional model. A is a method for automatically correcting a deflection of a stylus in a digitizing device wherein the stylus held at a tracer head in the digitizing device is moved along surfaces of a three-dimensional model, and digitized data representing configuration of the three-dimensional model is calculated from the relative position between the three-dimensional model and the tracer head and the displacement of the stylus, includes the steps of moving the stylus in a direction of a predetermined axis relatively to the three-dimensional model, determining the relative position as a first relative position when a displacement of the stylus approximates a predetermined first displacement, determining the relative position as a second relative position when it approximates a predetermined second displacement, automatically obtaining a deflection correction coefficient of the stylus from the first and second displacements and the first and second relative positions, and automatically correcting the displacement of the stylus using the thus obtained deflection correction coefficient.

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