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2006
Conference Paper
Titel
Effective compression algorithms for pulsed thermography data
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.