Method and apparatus for determining the shape and the local surface normals of specular surfaces

摘要

A method teaches how to measure-even strongly curved-specular surfaces with an apparatus that measures a shape as well as local surface normals absolutely. This is achieved by the observation and evaluation of patterns that are reflected at the surface. The reflected patterns are observed from different directions. The evaluation is done by termination of those locations in space, where the surface normals that are observed from different directions, have at least deviations against each other.