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Effective compression algorithms for pulsed thermography data

 
: Lugin, S.; Netzelmann, U.

Maldague, X.P.V.:
Advances in Signal Processing for Non Destructive Evaluation of Materials : Proceedings of the Vth International Workshop, Québec City (Canada), 2-4 Aug. 2005
Québec, 2006
ISBN: 2-9809199-0-X
S.19-24
International Workshop on Advances in Signal Processing for Non Destructive Evaluation of Materials <5, 2005, Quebec>
Englisch
Konferenzbeitrag
Fraunhofer IZFP ()
thermography; data compression; space/time mapping

Abstract
Two compression algorithms for the image sequences generated by pulsed-transient thermography for non-destructive testing were developed. The first algorithm allows to balance the quality of the origninal measurement data reproduction against the compression ratio. This algrithm comprises a dedicated space/time mapping (STM) method and an image compression algorithm (JPEG2000). The second algorithm provides lossless reproduction of the original measurement data. This algorithm is based on a particular transformation of dynamically changing data and a lossless compression algorithm (ZIP). Both algorithms were tested on typical experimental thermography data. In both cases, the achieved compression ratios were significantly higher than those of existing algorithms.

: http://publica.fraunhofer.de/dokumente/N-39199.html