著者

清水 早苗 山本 和彦 王 彩華 佐藤 雄隆 棚橋 英樹 丹羽 義典

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.124, no.6, pp.1288-1295, 2004 (Released:2004-09-01)

参考文献数

27

被引用文献数

1 1

---

Moving object detection with a mobile image sensor is an important task in robotics and computer vision, when considering the practical use of robots in human environments. In this paper, we propose a robust method that detects moving objects in the environment using the omni-directional depth information obtained by a mobile Stereo Omni-directional System (SOS). In order to detect only the moving objects within the depth image that are obtained by a sensor in motion, we first estimate the ego-motion of the sensor, and generate a predicted depth image for the current time from the depth obtained at the previous time by only considering the ego-motion of the sensor. Then the predicted depth image is compared with the actual one obtained at the current time, and the inconsistent regions are detected as moving objects. When the senor moves, occlusions will occur in the scene and they will cause false detections. However, these false detections can be suppressed by estimating the occlusion regions using the ego-motion parameters of the sensor and the jump edges in the depth image. The effectiveness of the method is shown with the experiment results on a real environment.

著者

加納 尚之 佐久間 研司 中島 健二

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.127, no.11, pp.1949-1950, 2007-11-01 (Released:2007-11-01)

参考文献数

2

被引用文献数

1

---

For communication of ALS patients, the authors put emphasis on ERP. This paper described that ALS patient could get high rate of correct judgment on the target word-specific experiment by detecting ERP. For practical use, it is very important that ALS patients can communicate with surrounding person smoothly. The authors discussed how to shorten the time to specify the target word, and discussed the prevention of misjudgment.

著者

舩橋 誠壽 本間 弘一 佐々木 敏郎 佐藤 嘉則 木戸 邦彦 福本 恭 矢野 浩仁

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.126, no.7, pp.897-903, 2006 (Released:2006-10-01)

参考文献数

24

---

Impact of the ubiquitous information technology on our society is so significant that directing technological development and preparing institutional apparatus are quite important and urgent. The present paper elaborates, with the efforts by both humanity and engineering disciplines, to find out the socio-technical issues of ubiquitous information society in 2010 by inspecting social implications of emerging technology as well as social expectations. In order to deliberate the issues, scenarios are developed that describes possible life in ubiquitous information society. The derived issues cover integrating information technology and human body, producing smart sharable environment, protecting individual rights, fostering new service business, and forming community.

著者

保田 明夫

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.125, no.5, pp.682-689, 2005 (Released:2005-08-01)

参考文献数

16

被引用文献数

2 2

---

The objective of this paper is to give overviews of text mining or textual data mining in Japan from the practical aspects. Text mining is the technology utilized for analyzing large volumes of textual data applying various parameters for purpose of withdrawing useful knowledge and information. The essence of “Mining” is "the discovery of knowledge or information." And target of text mining is to objectively discover and extract knowledge, facts, and meaningful relationships from the text documents. This paper summarizes the related disciplines and application fields which are applied in text mining, and introduces features and application examples of text mining tools.