Patent · US Expired

Method and apparatus for non-contact measurement of object surfaces

US5251156A · kind A · utility

220Cited by

5References

14Claims

0Family size

Assignee

Carl-Zeiss-Stiftung, Heidenheim/Brenz · DE

Inventors

Helmut Heier · Aalen, DE
Klaus-Peter Koch · Aalen, DE
Karl-Hermann Breyer · Heidenheim, DE

Key dates

Filing date	Jul 11, 1991
Grant date	Oct 5, 1993
Priority date	—
Expiry date	Jul 11, 2011

Classification

Technology area (CPC G)Physics
CPC primaryG01B11/005
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Pictures of an object to be measured are taken from several different positions or aspects by a video camera which is mounted via a two-axis articulating head to the measurement arm of a coordinate-measuring machine. The pictures taken from the different positions or aspects are stored and are evaluated with respect to the coordinates of characteristic points of interest on the surface of the object by the method of space intersection, known from photogrammetry. And, in this connection, the position-measurement values supplied by the scales of the coordinate-measuring machine and the angle-measurement values supplied by the articulating head are used for a calculated determination of the coordinates for each of the points of interest on the surface of the object.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.