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In a ubiquitous network society, information on mobile nodes such as pedestrians with cell phones in a target region is useful for network configuration, communication control, and so on. In this paper, we propose a novel method to estimate in real time the number of pedestrians in video sequences using a stationary camera. The proposed method extracts moving regions from video frame grabs using background...
The BOR-SPR is an antenna that has a wideband VSWR characteristic. To suppress interference signals, the BOR-SPR is modified to have a large VSWR in the frequency band that includes the interference signals (stop band). This is achieved by cutting slots in the shorted parasitic ring of the BOR-SPR. The analysis reveals that the slot length corresponds to approximately one-quarter guided wavelength...
This paper presents a technique for improving the gain characteristic by modifying the radiation elements. The resulting gain, obtained using the method of moments, is presented and discussed, together with the radiation pattern.
Three types of square loop antennas with the same side length L and spacing S have been analyzed. The analysis of a discrete DL antenna reveals that one of the loops radiates a CP wave when its circumference is approximately one wavelength. It follows that the antenna has two minima in the frequency response of the axial ratio. In contrast to the discrete DL antenna, a modified DL antenna has an axial...
This paper describes the next generation 600 V trench-gate IGBT utilizing the Micro-P structure to realize low noise and low power dissipation. We have achieved ldquobetter turn-on di/dt controllabilityrdquo, ldquooscillation free turn-offrdquo and ldquoimproved Von-Eoff trade-off relationshiprdquo in the 600 V IGBTs. In a typical inverter operation, the new chip has realized 10% lower power dissipation...
This research focuses on the recognition of vehicle external objects using selective visual attention system. We had proposed the selective visual attention system with the feedback of recognition results. The system has three visual features such as still image feature, motion feature and blinking feature, and has intention maps for each visual feature. The intention maps have come to express existing...
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