Person Localization System Using Privacy-Preserving Sensor
A privacy-preserving sensor for person localization has been developed. In theory, the sensor can be constructed with a line sensor and cylindrical lens because only a one-dimensional brightness distribution is needed. However, a line sensor is expensive. In contrast, CMOS area sensors are low cost and are increasing in sensitivity according to recent rapid advancement in the technology. Therefore, we covered the CMOS area sensor physically so that it behaved as a line sensor, we substituted CMOS sensors for the line sensors in practice. The proposed sensor obtains a one-dimensional horizontal brightness distribution that is approximately equal to the integration value of each vertical pixel line of the two-dimensional image. It is impossible to restore the two-dimensional detail texture image from one-dimensional brightness distribution, although it obtains enough information to detect a persons position and movement status. Thus, the privacy is protected. Moreover, the appearance of the proposed sensor is very different from the conventional video camera, so the psychological resistance of having a picture taken is reduced. In this work, we made the privacy preserving sensor practically, and verified whether a persons state was able to be detected. The simulation results show that the proposed sensor can detect a present persons state responsively without violating privacy.
person localization privacy-preserving line sensor rod lens CMOS sensor
Shota Nakashima Huimin Lu Kohei Miyata Yuhki Kitazono Seiichi Serikawa
Ube National College of Technology,2-14-1 Tokiwadai, Ube-shi, Yamaguchi 755-8555, Japan Kyushu Institute of Technology,1-1 Sensui-cho, Tobata-ku, Kitakyushu-shi, Fukuoka 804-8550, Japan Kitakyushu National College of Technology,5-20-1 Shii,Kokuraminami-ku, Kitakyushu-shi, Fukuoka 802-0
国际会议
湘潭
英文
622-627
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）