Solar loading thermography: Time-lapsed thermographic survey and advanced thermographic signal processing for the inspection of civil engineering and cultural heritage structures

Clemente Ibarra-Castanedo, Stefano Sfarra, Matthieu Klein, Xavier Maldague

Research output: Contribution to journalArticle

12 Citations (Scopus)


The experimental results from infrared thermography surveys over two buildings externally exposed walls are presented. Data acquisition was performed on a static configuration by recording direct and indirect solar loading during several days and was processed using advanced signal processing techniques in order to increase signal-to-noise ratio and signature contrast of the elements of interest. It is demonstrated that it is possible to detect the thermal signature of large internal structures as well as surface features under such thermographic scenarios. Results from a long-wave microbolometer compared favorably to those from a mid-wave cooled infrared camera for the detection of large subsurface features from unprocessed images. In both cases, however, advanced signal processing greatly improved contrast of the internal features.

Original languageEnglish
Pages (from-to)56-74
Number of pages19
JournalInfrared Physics and Technology
Publication statusPublished - 1 May 2017
Externally publishedYes



  • Building survey
  • Civil engineering structures
  • Cultural heritage
  • Signal processing
  • Solar loading
  • Thermography

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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