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In this paper, we propose an indoor video-based feature recognition method to detect the fall behaviors of people. We firstly establish and update the video background using Gaussian mixture model, and apply background subtraction to extract the moving targets. To remove the shadow interference on these extracted moving targets, we eliminate these shadows by integrating color and gradient features...
Tactical Data Link System always uses Time Division Multiple Access (TDMA) in Mac Layer. In TDMA, the channel is divided into time slots, and nodes are allocated slots to transmit data through the same time slot assignment algorithm. The tactical scenario is complicate and unpredictable, and some important messages need high Qos guarantee. It is hard to guarantee the Qos by the pre-allocated slot...
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