Imaging Components, Systems, and Processing

Detecting small, low-contrast moving targets in infrared video produced by inconsistent sensor with bad pixels

[+] Author Affiliations
Dmitriy Korchev, Hyukseong Kwon, Yuri Owechko

HRL Laboratories, LLC, 3011 Malibu Canyon Road, Malibu, California 90265, United States

Opt. Eng. 54(11), 113102 (Nov 03, 2015). doi:10.1117/1.OE.54.11.113102
History: Received June 8, 2015; Accepted October 5, 2015
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Abstract.  This paper addresses the problem of finding small and low-contrast moving targets in infrared (IR) video sequences produced by sensors with inconsistent parameters, such as intensity offset and gain as well as bad pixels. This sensor variability makes it difficult to apply methods based on frame registration using simple pixel differences. Our proposed algorithm uses regression to normalize the variations of intensity offset and gain between compared registered frames. A statistical criterion is used to calculate the threshold for the difference between normalized intensities of two frames. The algorithm for finding the differences between frames is also used to create a bad pixel mask either on- or offline. This mask is essential for the reduction of false detection rates. Our experiments show that this approach produces good results and can be used for detection of small, low-contrast targets in high dynamic range IR data. The proposed algorithm also produces good results for detecting moving targets in cases when objects are occluded by sparse vegetation.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Topics

Sensors ; Video ; Vegetation

Citation

Dmitriy Korchev ; Hyukseong Kwon and Yuri Owechko
"Detecting small, low-contrast moving targets in infrared video produced by inconsistent sensor with bad pixels", Opt. Eng. 54(11), 113102 (Nov 03, 2015). ; http://dx.doi.org/10.1117/1.OE.54.11.113102


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