Accession Number : ADP009016

Title :   Comparison of Optical and Digital Evaluation of Photographic PIV Recordings,

Corporate Author : DEUTSCHE FORSCHUNGSANSTALT FUER LUFT- UND RAUMFAHRT E V GOETTINGEN (GERMANY F R)

Personal Author(s) : Vogt, A. ; Raffel, M. ; Kompenhans, J.

Report Date : 23 JUL 1992

Pagination or Media Count : 6

Abstract : An analog optical method for the evaluation of PIV recordings utilizing an electrically addressed spatial light modulator is described. A comparison of the results of the evaluation carried out as well by means of the analog optical as by the standard technique (Young's fringes) showed that the optical method was at least of the same accuracy as the standard technique. Different examples for the application of the analog optical method at the evaluation of PIV recordings are presented. (Author)

Descriptors :   *OPTICAL CORRELATORS, *LIGHT MODULATORS, *HIGH SPEED PHOTOGRAPHY, COMPUTER APPLICATIONS, OPTIMIZATION, RESOLUTION, FOURIER TRANSFORMATION, TWO DIMENSIONAL, FLOW FIELDS, VELOCIMETERS, DIGITAL RECORDING SYSTEMS, AUTOCORRELATION, IMAGE PROCESSING, ACCURACY, TEST AND EVALUATION, COMPARISON, GERMANY.

Subject Categories : Electrooptical and Optoelectronic Devices
      Recording and Playback Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE