An Algorithm of Storing and Restoration Images in Hemisphere for Efficient Operation of CCTV Cameras on the Highway 


Vol. 27,  No. 9, pp. 892-899, Sep.  2002


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  Abstract

Generally using video detector, for obtaining traffic information, such as volume count, average speed and occupancy rate automatically, detection zone have to be installed inter each lane correctly. But even though coordinates transformation are calculated by mathematical approaches exactly in integration of CCTV camera and video detector system, the calculated coordinate of detection zones are not placed inter each lane of the road because of the mechanical error of CCTV camera system and external environment such as winds.
In this paper, we propose the revision algorithm in this case using for constructing image database in hemisphere. This hemisphere image is constructed on the surface of a certain hemisphere corresponding to pan, tilt, zoom factors of CCTV camera. For revising of coordinates of detection zone in captured image in case of incorrecting detection area, we can compare the extracted image from hemisphere by panning, tilting factors with captured image in real situation, and correct the difference errors of detection zones in two images.
Experiments have been conducted on image data captured at CCTV camera installed 15 meters high on Kiheung Interchange(IC) upstream place on the highway and the images is used 640×480 resolution and 256 gray-levels.

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  Cite this article

[IEEE Style]

I. J. Lee, S. Namkoong, J. Y. Min, "An Algorithm of Storing and Restoration Images in Hemisphere for Efficient Operation of CCTV Cameras on the Highway," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 9, pp. 892-899, 2002. DOI: .

[ACM Style]

In Jung Lee, Seong Namkoong, and Joon Young Min. 2002. An Algorithm of Storing and Restoration Images in Hemisphere for Efficient Operation of CCTV Cameras on the Highway. The Journal of Korean Institute of Communications and Information Sciences, 27, 9, (2002), 892-899. DOI: .

[KICS Style]

In Jung Lee, Seong Namkoong, Joon Young Min, "An Algorithm of Storing and Restoration Images in Hemisphere for Efficient Operation of CCTV Cameras on the Highway," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 9, pp. 892-899, 9. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880