Spatial-time-state fusion algorithm for defect detection through eddy current pulsed thermography

Xiang Xiao, Bin Gao, Wai Lok Woo, Gui Yun Tian, Xiao Ting Xiao

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Eddy Current Pulsed Thermography (ECPT) has received extensive attention due to its high sensitive of detectability on surface and subsurface cracks. However, it remains as a difficult challenge in unsupervised detection as to identify defects without knowing any prior knowledge. This paper presents a spatial-time-state features fusion algorithm to obtain fully profile of the defects by directional scanning. The proposed method is intended to conduct features extraction by using independent component analysis (ICA) and automatic features selection embedding genetic algorithm. Finally, the optimal feature of each step is fused to obtain defects reconstruction by applying common orthogonal basis extraction (COBE) method. Experiments have been conducted to validate the study and verify the efficacy of the proposed method on blind defect detection.
Original languageEnglish
Pages (from-to)133-145
Number of pages13
JournalInfrared Physics and Technology
Early online date9 Mar 2018
Publication statusPublished - 1 May 2018


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