Application Of Computer-Aided Evaluation For Holographic Vibration Analysis And Optical Contouring

H. Steinbichler

doi:10.1117/12.968830

16 January 1988 Application Of Computer-Aided Evaluation For Holographic Vibration Analysis And Optical Contouring

H. Steinbichler

Proceedings Volume 0952, Laser Technologies in Industry; (1988) https://doi.org/10.1117/12.968830
Event: Laser Technologies in Industry, 1988, Porto, Portugal

Abstract

Holographic interferometry is applied sucessfully in vibration analysis. As the resulting characteristic fringe pattern, the interferograms, are so complicated and can only be evaluated by an expert eye, there is a clear desire for automated evaluation and a lucidly arranged exposition. Therefore, the problem in image processing in interferometry lies in automatically recognizing and evaluating lines, as well as in differentiating the lines from object contours, shadows, etc. This kind of image processing then also makes it possible to evaluate other, non-holographic line systems. The application is not only limited to the automatic evaluation of holographic interferograms, but also in the optical measuring of the form any kind of objects using contour lines projected onto them, in the evaluation of speckle and photoelasticitic diagrams and Moire diagrams.

Citation Download Citation

H. Steinbichler "Application Of Computer-Aided Evaluation For Holographic Vibration Analysis And Optical Contouring", Proc. SPIE 0952, Laser Technologies in Industry, (16 January 1988); https://doi.org/10.1117/12.968830

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