Correction of local surface irregularities using reflection lines

Abstract

A family of straight lines can be reflected onto a surface as seen from a fixed point of vision. Curves generated in this way on the surface are called reflection lines. Deviations of the surface will give irregularities in these reflection lines. To correct these deviations, a procedure can be developed to find the necessary changes of the surface for a given variation of the reflection lines, the point of vision and the family of straight lines being kept constant. An example is given of correcting the surface of a car body using reflection lines.