High-temperature dual-band thermal imaging by means of high-speed CMOS camera system

W. Hauer; G. Zauner

doi:10.1117/12.2002357

6 March 2013 High-temperature dual-band thermal imaging by means of high-speed CMOS camera system

W. Hauer, G. Zauner

Proceedings Volume 8661, Image Processing: Machine Vision Applications VI; 866103 (2013) https://doi.org/10.1117/12.2002357
Event: IS&T/SPIE Electronic Imaging, 2013, Burlingame, California, United States

Abstract

When measuring rapid temperature change as well as measuring high temperatures (<2000 K) commercial pyrometers reach the limits of their performance very quickly. Thus a novel type of high temperature measurement system using a high-speed camera as a two-color pyrometer is introduced. In addition to the high temporal resolution, ranging between 10 μs – 100 μs, the presented system also allows the determination of the radiation temperature distribution at a very high spatial resolution. The principle of operation including various image processing algorithms and filters is explained by means of a concrete example, where the surface temperature decay of a carbon electrode heated by an electric arc is measured. The measurement results yield a temperature of a hot spot on the contact surface of 3100 K which declines to approx. 1800 K within 105 ms. The spatial distribution of surface temperatures reveal local temperature variations on the contact. These variations might result from surface irregularities, such as protrusions or micro-peaks, due to inhomogeneous evaporation. An error analysis is given, for evaluating the potential accuracy inherent in practical temperature measurements.

Citation Download Citation

W. Hauer and G. Zauner "High-temperature dual-band thermal imaging by means of high-speed CMOS camera system", Proc. SPIE 8661, Image Processing: Machine Vision Applications VI, 866103 (6 March 2013); https://doi.org/10.1117/12.2002357

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available