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Many people use the web as the main information source in their daily lives. However, most web pages contain non-information components, such as site bars, footers and ads, etc., which make it complicated to extract text from the original HTML documents. Because of the high human intervention and the low results extraction quality, although the web text extraction techniques have been developed, the...
A stereo vision-based obstacle awareness and avoidance algorithm for indoor UAVs is described in this paper. While in most papers UAVs perceive the environment by vision-based obstacle discrimination, in our method a scene depth map is directly used, which makes our algorithm more adaptive in complex environment with numerous obstacles. For the purpose of lower time cost and less match mistakes, edge...
Ultra-Wideband (UWB) communication system provides high accurate localization due to the high multi-path resolution capacity and large bandwidth of a UWB signal. Time Difference of Arrival(TDOA) technique provides very good accuracy, which is suitable for applying to UWB communication and localization systems. Estimating the target location from TDOA measurements is not an easy task since it is dealing...
A constraint-based sensor network nodes particle swarm search localization algorithm (CPL) is presented. First of all, a constraint domain of an unknown node must be determined; Then the positions which meet specific criteria is searched out by particle swarm optimization algorithm and the searching results within the constraint domain are recorded; Finally, the unknown node's localization can be...
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