Share Email Print
cover

Proceedings Paper

Nonlinear filtering method for emissivity correction of PCB infrared thermal images
Author(s): Jiuqing Wan; Xingshan Li
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In the diagnosis of Printed Circuit Board (PCB) based on infrared radiation, emissivity correction must be performed on the thermal image to retrieve the true temperature distribution on the PCB surface. Taking the measured PCB surface temperature as a combination of its true temperature distribution and its emissivity distribution, a non-linear filtering method was proposed to separate the true temperature from this combination based on the differences in the continuity of these two contributions. As the key step of the proposed method, the discontinuity detection is implemented through wavelet transform. Experimental results indicated that the true temperature distribution can be estimated precisely by the proposed method.

Paper Details

Date Published: 2 September 2003
PDF: 5 pages
Proc. SPIE 5253, Fifth International Symposium on Instrumentation and Control Technology, (2 September 2003); doi: 10.1117/12.522339
Show Author Affiliations
Jiuqing Wan, Beijing Univ. of Aeronautics and Astronautics (China)
Xingshan Li, Beijing Univ. of Aeronautics and Astronautics (China)


Published in SPIE Proceedings Vol. 5253:
Fifth International Symposium on Instrumentation and Control Technology
Guangjun Zhang; Huijie Zhao; Zhongyu Wang, Editor(s)

© SPIE. Terms of Use
Back to Top