An effective compression algorithm for pulsed thermography data

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 c...

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Veröffentlicht in:	NDT & E international : independent nondestructive testing and evaluation 2005-09, Vol.38 (6), p.485-490
Hauptverfasser:	Lugin, S., Netzelmann, U.
Format:	Artikel
Sprache:	eng
Schlagworte:	Cross-disciplinary physics: materials science rheology Data compression Exact sciences and technology Fundamental areas of phenomenology (including applications) Materials science Materials testing Measurement and testing methods Physics Solid mechanics Space/Time mapping Structural and continuum mechanics Thermography
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Beschreibung
Zusammenfassung:	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.
ISSN:	0963-8695 1879-1174
DOI:	10.1016/j.ndteint.2005.01.005