21 November 1997 Cross-correlation and cross-tracking of compressed digital PIV images
Author Affiliations +
One of the major technological difficulties in implementing digital particle image velocimetry (PIV) is associated with acquiring, processing and storing large volumes of image data form high resolution CCD camera(s). Current CCD camera technology provides both very high resolutions and high frame rates typically producing tens of megabytes of data per second. With the need for simultaneous data form two or more image sources the problems of data transmission, processing and storage become extreme. Significant increases in transfer, processing and storage can be achieved by compressing images by removing components of the image that are redundant or of low significance. This paper presents an approach to PIV image compression and methods of processing encoded data. The effect of varying levels of compression on data transfer and processing rates as well as measurements precision is considered and illustrated with results from both real and synthetic image data.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Callum Gray, Callum Gray, } "Cross-correlation and cross-tracking of compressed digital PIV images", Proc. SPIE 3172, Optical Technology in Fluid, Thermal, and Combustion Flow III, (21 November 1997); doi: 10.1117/12.293389; https://doi.org/10.1117/12.293389


Back to Top