REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

TEMPERATURE CONTRAST ENHANCEMENT TECHNIQUES IN PULSE VIDEO thermography APPLICATIONS

LjUBIŠA TOMIĆ

Technical Test Center, Belgrade, ljubisa.tomic@gmail.com

JOVAN ELAZAR

University of Belgrade, Faculty of Electrical Engineering,  Belgrade, elazar@etf.rs

BOJAN MILANOVIĆ

Military Academy, Belgrade, bmilanovic@verat.net

VESNA DAMNJANOVIĆ

University of Belgrade, Faculty of Mining and Geology, Belgrade, damnjanovic@rgf.bg.ac.rs

ALEKSANDAR KOVAČEVIĆ

Technical Test Center, Belgrade, aleksatoc@yahoo.com

Abstract: This paper presents  temperature contrast enhacements processing technique applied on measurement results obtained on an aluminum test plate by using IR video thermography in pulsed defectoscopy. Noise  reduction is obtained by Wiener filtering method and results are compared by convetional processing techniques. The comparative results of temperature contrast filtering on the test plate surface: basic harmonic, mean value and Wiener filter of IR pixels along the central line, are given.

Key words: Pulse thermography, temperature contrast, filtering.