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An effective compression algorithm for pulsed thermography data

: Lugin, S.; Netzelmann, U.


NDT & E International 38 (2005), No.6, pp.485-490
ISSN: 0963-8695
Journal Article
Fraunhofer IZFP ()
thermography; data compression; space/time mapping

A data compression algorithm for the image sequences generated by pulsed-transient thermography for non-destructive testing was developed. The aim was to obtain a good compromise between reproduction of the original measurement data and a high compression factor. The algorithm for data compression comprises a dedicated space/time mapping (STM) method and an image compression algorithm (JPEG). The algorithm was tested on typical experimental thermography data. The results show a data storage compression factor of up to 24-55 at a reproduction accuracy which is still better than that achieved by an existing algorithm.