Processing system for the analysis of particle displacement holograms

Callum Gray; Clive A. Greated

doi:10.1117/12.163746

2 December 1993 Processing system for the analysis of particle displacement holograms

Callum Gray, Clive A. Greated

Proceedings Volume 2005, Optical Diagnostics in Fluid and Thermal Flow; (1993) https://doi.org/10.1117/12.163746
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

Holography is a method by which information of a 3D object space can be recorded. Used to record the position of neutrally buoyant tracers in a flow at two or more briefly separated instants it provides the means to record complex 3D velocity distributions. The magnitude of data contained in a holographic recording and the complexity of extracting flow displacement values from within a random distribution of holographically recorded seed particles makes automated analysis desirable. The analysis system described here is based on 3D correlation processing and provides an accurate and reliable means of detecting and measuring the local 3D displacements from a background of randomly positioned particles.

Citation Download Citation

Callum Gray and Clive A. Greated "Processing system for the analysis of particle displacement holograms", Proc. SPIE 2005, Optical Diagnostics in Fluid and Thermal Flow, (2 December 1993); https://doi.org/10.1117/12.163746

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