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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 2 — Jan. 10, 2004
  • pp: 349–357

Real-time target recognition and tracking of vehicles moving on a street by matched filtering that uses quantization of modulated function to complexes of a quadrupole

Takumi Minemoto, Taketsugu Yao, and Tsuyoshi Kawai  »View Author Affiliations


Applied Optics, Vol. 43, Issue 2, pp. 349-357 (2004)
http://dx.doi.org/10.1364/AO.43.000349


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Abstract

Vehicles moving on a street were monitored by a CCD digital TV camera and recognized in real time by a nonlinear matched filtering method, quantization of modulated function to complexes of a quadrupole, with a personal computer. In the nonlinear matched filtering method an input scene containing the vehicles is modulated in the frequency domain by matched filters, the modulated functions are quantized to complex numbers representing a quadrupole, and then quantized functions are inverse-Fourier transformed. In the frame time of an NTSC-TV system, autocorrelation signals of four vehicles were calculated and discriminated, and their peak positions were determined. Their correct loci in real time were tracked in sequential frames.

© 2004 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(100.5010) Image processing : Pattern recognition
(330.6110) Vision, color, and visual optics : Spatial filtering
(350.6980) Other areas of optics : Transforms

History
Original Manuscript: April 18, 2003
Revised Manuscript: October 20, 2003
Published: January 10, 2004

Citation
Takumi Minemoto, Taketsugu Yao, and Tsuyoshi Kawai, "Real-time target recognition and tracking of vehicles moving on a street by matched filtering that uses quantization of modulated function to complexes of a quadrupole," Appl. Opt. 43, 349-357 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-2-349


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