Publica
Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten. Effective compression algorithms for pulsed thermography data
| 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
pp.19-24 |
| International Workshop on Advances in Signal Processing for Non Destructive Evaluation of Materials <5, 2005, Quebec> |
|
| English |
| Conference Paper |
| 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.