End-to-end processing of passive thermography sequences from outdoor concrete infrastructure inspection

Sandra Pozzer; Samira Ebrahimi; Ahmed El Refai; Fernando López; Xavier Maldague

doi:10.1117/12.2664058

12 June 2023 End-to-end processing of passive thermography sequences from outdoor concrete infrastructure inspection

Sandra Pozzer, Samira Ebrahimi, Ahmed El Refai, Fernando López, Xavier Maldague

Proceedings Volume 12536, Thermosense: Thermal Infrared Applications XLV; 125360X (2023) https://doi.org/10.1117/12.2664058
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Conference Poster

Abstract

This study developed an end-to-end procedure to overcome common issues faced during the analysis of passive infrared thermography (IRT) sequences from outdoor concrete infrastructures. The processing pipeline includes the automatic pre-processing of raw thermograms, data cleaning and organization, image adjustment, and sequential image registration. One image registration method was implemented, and the results were evaluated using the Euclidean distance metric. Furthermore, the resulting sequences were processed using signal processing techniques to increase the detectability of the defects. The results from outdoor IRT surveys over two academic samples are presented, where one image per minute was taken for 24 hours on slabs and columns representative structures. By addressing the difficulties encountered during the analysis of passive IRT sequences, our contribution can broaden the spectrum of the application of IRT for the condition assessment of concrete infrastructure.

Citation Download Citation

Sandra Pozzer, Samira Ebrahimi, Ahmed El Refai, Fernando López, and Xavier Maldague "End-to-end processing of passive thermography sequences from outdoor concrete infrastructure inspection", Proc. SPIE 12536, Thermosense: Thermal Infrared Applications XLV, 125360X (12 June 2023); https://doi.org/10.1117/12.2664058

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