Prospects for super-resolution with particle image velocimetry

Richard D. Keane, Ronald J. Adrian

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations


High image density PIV is used to improve spatial resolution by ensuring that each interrogation spot gives a vector measurement. In this case the resolution is determined by the size of the interrogation volume. It is argued that the ultimate resolution of PIV is determined by the smaller of the mean spacing between particles and the displacement of the particles between light pulses, and that in the high image density limit, these distances are smaller than the interrogation spot size. Thus, it should be possible to improve spatial resolution to values less than the interrogation spot diameter. We refer to this as super-resolution. A method of achieving super-resolution by using a combination of correlation analysis of the group of particles in a spot and sub-interrogation spot particle tracking is described and evaluated.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsSoyoung S. Cha, James D. Trolinger
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Number of pages11
ISBN (Print)0819412546
StatePublished - Dec 1 1993
Externally publishedYes
EventOptical Diagnostics in Fluid and Thermal Flow - San Diego, CA, USA
Duration: Jul 14 1993Jul 16 1993

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherOptical Diagnostics in Fluid and Thermal Flow
CitySan Diego, CA, USA

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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