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Effective compression algorithms for pulsed thermography data

: Lugin, S.; Netzelmann, U.


Quantitative infrared thermography 3 (2006), No.2, pp.201-218
ISSN: 1768-6733
ISSN: 2116-7176
Journal Article
Fraunhofer IZFP ()
data compression; thermography; space/time mapping

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 original measurement data reproduction against a compression ration. This algorithm comprises a dedicated space/time mapping (STM) method annd an image compression algorithm (JPE2000). The second alogithm provides lossless reproduction of the original measurement data. This algorithm is based on a particular tramsformatio 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.