Importance

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Abstract

A system for inspecting an object, the system comprising a camera; a work surface for receiving the object; and an apparatus for processing an image of the object taken by the camera wherein, during the capture of an image by the camera, the camera and the object are fixed with respect to one another. The processing apparatus identifies those image data components that represent the an edge of the object in an image plane, and projects each image edge data component onto the object plane. The processing apparatus also determines whether each object edge data component relates to an edge of the object that lies on the work surface or to an edge of the object that is spaced apart from the work surface and, upon determining that an object edge data component is spaced apart from the work surface, adjusts the value of the object edge data component by an amount depending on the ratio of the size of the object in a direction generally perpendicular with the work surface to the perpendicular distance of the camera's focal point from the object plane.

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First Claim