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Current Sensor based Non-intrusive Appliance Recognition for Intelligent Outlet
Takeshi Saitoh,Yuuki Aota,Tomoyuki Osaki,Ryosuke Konishi,Kazunori Sugahara 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
This paper presents the current sensor based nonintrusive appliance recognition method for intelligent outlet. Our system has two main functions; one is the remote control function of power supply through the Internet. The other is monitoring function observe the state of appliance. In this paper, the monitor function is especially focused. To recognize the state of appliance, we extract nine features based on measured current signal. In the experiment, we gathered a number of signals with various appliances, and found that three features Ipeak, Iavg, and Irms yield valid recognition results of 81.3%, 84.0%, and 87.4% for classifying the state of appliance into three categories.
Bird Tracking and Flapping Motion Recognition for Monitoring System
Kohei Maruyama,Takeshi Saitoh,Ryosuke Konishi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Recently, the increasing bird in jury is one of the social problems. To solve this problem, we set our goal to develop the monitoring system. As the first step, we focus the bird tracking and flapping motion recognition both techniques are core technologies of our goal. It is found that Mean Shifttracking based on both the color model and flow model is the most effective to track the target object compared with other wellnown tracking methods, such as, optical flow, color model based Mean Shift, and Particle Filter. We defined three features the flow gradient and two flow features based on the frequency analysis, and proposed the method for recognizing the flapping motion. We collected 70 scenes in cluding the bird’s flying, bird’s walking, and person’s walking. As the result, the flow gradient feature is the effective for recognizing the flapping motion.
Shen, Yue,Saitoh, Yohei,Kinoshita, Takeshi,Ye, Kyungrock The Korean Institute of Landscape Architecture 2001 Journal of the Korean institute of landscape archi Vol.1 No.-
The study made a comparison of the draft making process and implementation of open spaces in Japan and China, and pointed out the issues to be solved. In summary, we discovered that the Japanese plan emphasizes joint conduct and cooperation between residents and corporation/organization, while the Chinese plan is characterized by its active usage of administrative lines. Regarding the policies of their plans, there are many similarities in the basic issues for both countries. The study clarified the differences in measures responding to geographical and systematic features of each country.
Monocular Vision based Indoor Mobile Robot
Naoya Tada,Keisuke Murata,Takeshi Saitoh,Tomoyuki Osaki,Ryosuke Konishi 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7
This paper presents the indoor mobile robot that moves automatically without needing environment information beforehand while recognizing the frontal surrounding environment with only one general camera. Based on the frontal image, the robot detects two boundary lines, some obstacle regions, and a moving direction. When the obstacle is detected, the avoidance or stop movement is worked according to the size and the position of the obstacle, otherwise the robot moves at the center of the corridor. We developed two wheelchair based mobile robots, and carried out moving experiments. It was possible to pass each other without colliding by working the avoidance movement in face-to-face movement in the coexistence environment.
Mobile Robot with Following Function and Autonomous Return Function
Naoki Tsuda,Shuji Harimoto,Takeshi Saitoh,Ryosuke Konishi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper proposes the mobile robot consisted of following function and returning function with monocular camera. In the following function, the robot follows the target object such as the person who walks in front of robot, and moves until reaching his destination. To follow him, the region extraction method is applied. Furthermore, the robot records the moving route. In the returning function, the robot moves by tracing the recorded route. We developed the mobile robot based on the electronic wheelchair and carried out several experiments. As the result, we confirm that our robot moves both following mode and returning mode adequate accuracy.
( Tatsuya Hayashi ),( Satoshi Saitoh ),( Kei Fukuzawa ),( Yoshinori Tsuji ),( Junji Takahashi ),( Yusuke Kawamura ),( Norio Akuta ),( Masahiro Kobayashi ),( Kenji Ikeda ),( Takeshi Fujii ),( Tosiaki M 대한간학회 2017 Gut and Liver Vol.11 No.5
Background/Aims: Noninvasive liver fibrosis evaluation was performed in patients with nonalcoholic fatty liver disease (NAFLD). We used a quantitative method based on the he-patic volume acquired from gadoxetate disodium-enhanced (Gd-EOB-DTPA-enhanced) magnetic resonance imaging (MRI) for diagnosing advanced fibrosis in patients with NAFLD. Methods: A total of 130 patients who were diagnosed with NAFLD and underwent Gd-EOB-DTPA-enhanced MRI were retrospectively included. Histological data were available for 118 patients. Hepatic volumetric parameters, including the left hepatic lobe to right hepatic lobe volume ratio (L/R ratio), were measured. The usefulness of the L/R ratio for diag-nosing fibrosis ≥F3-4 and F4 was assessed using the area under the receiver operating characteristic (AUROC) curve. Multiple regression analysis was performed to identify vari-ables (age, body mass index, serum fibrosis markers, and histological features) that were associated with the L/R ratio. Results: The L/R ratio demonstrated good performance in differentiating advanced fibrosis (AUROC, 0.80; 95% confi-dence interval, 0.72 to 0.88) from cirrhosis (AUROC, 0.87; 95% confidence interval, 0.75 to 0.99). Multiple regression analysis showed that only fibrosis was significantly associat-ed with the L/R ratio (coefficient, 0.121; p<0.0001). Conclu-sions: The L/R ratio, which is not influenced by pathologi-cal parameters other than fibrosis, is useful for diagnosing cirrhosis in patients with NAFLD. (Gut Liver 2017;11:674- 683)