Results 231 to 240 of about 335,481 (263)
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Line detection discrete scale-space
Proceedings of 1st International Conference on Image Processing, 2002Based on the scale-space theory for discrete signals introduced by Lindeberg (1990) a line detector is presented for locating roof-shaped lines in 1-D and 2-D signals with subpixel accuracy. Additionally the slope of the profile and the line-orientation are estimated. This approach uses convolution kernels derived from a discretization of the diffusion
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Effects of Discreteness in Transmission Lines
Nonlinear Guided Waves and Their Applications, 2001We introduce a new scheme to investigate the stability of signals propagating in transmission lines with lumped amplification/filtering. We find instabilities not reproduced by an averaged model and which give rise to soliton formation.
C. Knöll +3 more
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Inverse Scattering for Discrete Transmission-Line Models
SIAM Review, 1987An algorithm for computing the local impedance coefficients for a discretized model of a transmission line in terms of global reflection and transmission coefficients is presented. The method is suitable for parallel processing, and gives an O(N) algorithm for N parallel processors.
Bruckstein, A. M., Kailath, T.
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On-line coordination among discrete-event agents
International Joint Conference on Autonomous Agents and Multiagent Systems, 2009This paper addresses a novel coordination problem for distributed agents in a discrete-event setting. We introduce and study a predicate coordination problem as the problem of distributed agents interacting and communicating between themselves to satisfy (the invariance of) a global predicate specifying an inter-agent constraint.
Manh Tung Pham, Kiam Tian Seow
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Video fade detection by discrete line identification
Object recognition supported by user interaction for service robots, 2003The video segmentation problem can be regarded as a problem of detecting the fundamental video units (shots). Due to different ways of linking two consecutive shots this task turns out to be difficult. In this work, we propose a method to detect a type of gradual transition, the fade, by image segmentation tools instead of using dissimilarity measures ...
Guimarães, Silvio Jamil Ferzoli +3 more
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A discrete multitone power line communications system
2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100), 2002In-building power lines have been considered as a medium for high speed data transmission for applications like home networking and Internet access. Frequency selectivity and time variation of this medium in addition to the high level of narrow-band and impulsive interference makes multi-carrier modulation, and especially its popular variant discrete ...
Tooraj Esmailian +2 more
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Discretion and influence at the front lines
2011Understanding the factors that influence the behavior of front-line emergency medical services (EMS) providers is critical as these individuals can have a substantiveimpact on the health of the patients they treat. EMS providers can be examined as “street levelbureaucrats,” focusing specifically on the interrelationships between rules, discretion, and ...
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A new method of analysis for discrete straight lines
Pattern Recognition Letters, 1991Abstract The problem of finding the set of all continuous straight lines which lead to the same digitization is quite well known and has been studied in [1, 2, 3]. In this paper, we propose a new method of analysis which is simple and straightforward but is shown to be as powerful as the other techniques.
Samiran Chattopadhyay +1 more
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Shape Reconstruction by Line Voting in Discrete Space
2006Shape from silhouettes is a binary geometric tomography since both objects and projections, which are measured as silhouettes, are binary. In this paper, we formulate shape from silhouettes in the three-dimensional discrete space. This treatment of the problem implies an ambiguity theorem for the reconstruction of objects in discrete space. Furthermore,
Kosuke Sato +2 more
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Line Art Rendering of Triangulated Surfaces Using Discrete Lines of Curvatures.
2000In recent years, several techniques have been proposed for automatically producing line-art illustrations. In this paper a new non photo-realistic rendering scheme for triangulated surfaces is presented. In contrast to prior approaches with parametric surfaces, there is no global parameterization for triangle meshes.
Rössl, Christian +2 more
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