Evaluation of optical shape measurement methods with respect to accuracy of data

W. Nadeborn

doi:10.1117/12.2308805

23 July 1993 Evaluation of optical shape measurement methods with respect to accuracy of data

W. Nadeborn

Proceedings Volume 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology; 1983AQ (1993) https://doi.org/10.1117/12.2308805
Event: 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1993, Budapest, Hungary

Abstract

Optical measurement techniques such as structured illumination (fringe projection) with white light or Laser¹ and holographic contouring ^2,3 allow a non contact and field wise access to the shape and the location of three dimensional objects. For all known methods the process of measurement can be devided into two steps:

1. to each image point of the object a phase or phase difference value is assigned as the primary measuring quantity

2. based on a geometric model of the image formation process the 3D-coordinates are determined using these phase values and certain geometric parameters of the measurement unit identified by a two-step-calibration procedure.

Citation Download Citation

W. Nadeborn "Evaluation of optical shape measurement methods with respect to accuracy of data", Proc. SPIE 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1983AQ (23 July 1993); https://doi.org/10.1117/12.2308805

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