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Optical Engineering • Open Access

Stable tracking point extraction for infrared extended target based on contour smoothing and minimal inscribed circle
Author(s): Tao Lei; Sihan Yang; Ping Jiang; Qinzhang Wu

Paper Abstract

An approach is proposed to reduce the tracking jitter of the extended target in boost phase for plume tracker in a photoelectric acquisition, tracking, and pointing system. The characteristics of the vehicle imaging are analyzed and the causes of jitters are identified. The target moving direction and its principal axis are combined to calculate the optimal frontal direction. A contour smoothing method based on the chord-arc ratio filtering is introduced to obtain a preliminary extraction point with lower jitters. Then a fine tracking point extraction method based on the minimal inscribed circle of contour after filtering is presented. Experimental results confirm that the proposed method significantly improves the tracking precision and stability.

Paper Details

Date Published: 5 November 2013
PDF: 7 pages
Opt. Eng. 52(11) 113101 doi: 10.1117/1.OE.52.11.113101
Published in: Optical Engineering Volume 52, Issue 11
Show Author Affiliations
Tao Lei, Institute of Optics and Electronics (China)
Sihan Yang, Chengdu Univ. of Technology (China)
Ping Jiang, Institute of Optics and Electronics (China)
Qinzhang Wu, Institute of Optics and Electronics (China)

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