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This paper proposes an object movement detection method covering large areas of a room by using multiple cameras. When object movement detection for whole of a room is performed, there are several challenging difficulties: sizes of objects on the camera images are small, non-objects such as humans also exist on the images, objects are sometimes difficult to detect in specific viewpoints because of...
Laser based environment recognition technologies have been developed recently. Especially moving objects detection and classification by laser scanners mounted on a mobility is required for mobile robots and autonomous cars. In this paper, we propose a moving objects detection and classification method based on grid trajectories acquired from sequential laser scan data. Grid trajectories are obtained...
Digital watermarks are used to prevent unauthorized use of digital content, such as illegal copying and falsification. Benchmark tools for digital watermarks are necessary to measure the strength of a digital watermark. For example, Stirmark and JEWELS are well known benchmark tools. However, the functions of existing tools are not enough, because they do not have evaluation functions using plural...
The present paper gives an exposition of the Lyapunov direct method applied to obtaining stability criteria for time-delay systems, with a view to showing a recent result on the conservativeness brought about by model transformations. Applications of Lyapunov function is illustrated in an expository style, taking up linear system with a time-varying delay. The instability phenomena appears when a...
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