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Proceedings Paper

A new concept of real-time security camera monitoring with privacy protection by masking moving objects
Author(s): Kenichi Yabuta; Hitoshi Kitazawa; Toshihisa Tanaka
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Paper Abstract

Recently, monitoring cameras for security have been extensively increasing. However, it is normally difficult to know when and where we are monitored by these cameras and how the recorded images are stored and/or used. Therefore, how to protect privacy in the recorded images is a crucial issue. In this paper, we address this problem and introduce a framework for security monitoring systems considering the privacy protection. We state requirements for monitoring systems in this framework. We propose a possible implementation that satisfies the requirements. To protect privacy of recorded objects, they are made invisible by appropriate image processing techniques. Moreover, the original objects are encrypted and watermarked into the image with the "invisible" objects, which is coded by the JPEG standard. Therefore, the image decoded by a normal JPEG viewer includes the objects that are unrecognized or invisible. We also introduce in this paper a so-called "special viewer" in order to decrypt and display the original objects. This special viewer can be used by limited users when necessary for crime investigation, etc. The special viewer allows us to choose objects to be decoded and displayed. Moreover, in this proposed system, real-time processing can be performed, since no future frame is needed to generate a bitstream.

Paper Details

Date Published: 15 February 2006
PDF: 12 pages
Proc. SPIE 6063, Real-Time Image Processing 2006, 60630L (15 February 2006); doi: 10.1117/12.642566
Show Author Affiliations
Kenichi Yabuta, Tokyo Univ. of Agriculture and Technology (Japan)
Hitoshi Kitazawa, Tokyo Univ. of Agriculture and Technology (Japan)
Toshihisa Tanaka, Tokyo Univ. of Agriculture and Technology (Japan)


Published in SPIE Proceedings Vol. 6063:
Real-Time Image Processing 2006
Nasser Kehtarnavaz; Phillip A. Laplante, Editor(s)

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