A novel tool for Non Destructive Testing using frequency analysis of IR image sequences

• Autorzy: Więcek P. , Strąkowska M.
• Języki publikacji: EN

Abstrakty

EN

In this paper, a novel methodology and a software tool for advanced image processing of thermal image sequences are presented. The software implements 1-D Fourier, short-time Fourier and wavelet transforms. The tool uses temperature variation in time for each pixel in the sequence of IR images. It is dedicated to Non Destructive Testing (NDT) testing and the functional time-dependent thermal imaging, e.g. for screening in medical diagnosis. The overall methodology is based on 2-stage analysis. The first, preliminary one is to estimate the right scale/frequency and the moment in time for the final frequency analysis. It can simplify characterization of materials and detection of cracks and defects.

Słowa kluczowe

EN

IR thermography; wavelet; Fourier; short-time Fourier transforms; functional thermal imaging

• Wydawca: Wydawnictwo PAK
• Czasopismo: Measurement Automation Monitoring
• Rocznik: 2015
• Tom: Vol. 61, No. 6
• Strony: 219--222
• Opis fizyczny: Bibliogr. 6 poz., rys., wykr.

Twórcy

autor

Więcek P.

• TEXO SYSTEMS, Lodz, Poland
• Lodz University of Technology, Institute of Electronics, Wolczanska 211/215, 90-924 Lodz, Poland

autor

Strąkowska M.

• TEXO SYSTEMS, Lodz, Poland
• Lodz University of Technology, Institute of Electronics, Wolczanska 211/215, 90-924 Lodz, Poland

Bibliografia

• [1] Maldague X. P.: Theory and practice of infrared technology for nondestructive testing. John Wiley & Sons, N.Y., 2001.
• [2] Galmiche F. and Maldague X.: Depth defect retrieval using the wavelet pulsed phased thermography. In D. Balageas, G. Busse, C. Carlomagno ed.: Proc. QIRT 2000 (Quantitative Infrared Thermography) , Eurotherm Seminar 64, Reims, France, pp. 194-199, 2000.
• [3] Maldague X. P, Galmiche F and Ziadi A.: Advances in Pulsed Phase Thermography. Infrared Physics & Technology, 43: 175-181, 2002.
• [4] Darabi A. and Maldague X.: Neural Networks Based Detection and Depth Estimation in TNDE. Nondestructive Testing and Evaluation International, 35 (3): 165-175, 2002.
• [5] Wiecek B., G. De Mey: Termowizja w podczerwieni, podstawy i zastosowania. Publishing House PAK, 2011, (in Polish).
• [6] TexoSystem, Lodz, Poland, www.texosystem.pl