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Due to channel noise and congestion, video data packets can be lost during transmission in error-prone networks, which severely affects the quality of received video sequences. The conventional inter-frame error concealment (EC) methods estimate a motion vector (MV) for a corrupted block or reconstruct the corrupted pixel values using spatial and temporal weighted interpolation, which may result in...
This paper has presented and designed a four-channel video data system of reception, extraction, display and switch based on the DE2-70 development and education board and the development environment of embedded operating system μClinux. First, it received the video data packets, which were 640×480 resolution and RGB format coming from the four cameras in front-end through the router on network, and...
Focusing on 802.16e-based railway networks, our work deals with the degradation of the perceived quality of multimedia communications in presence of handover events. The movement of mobile nodes (MN) across coverage areas of distinct base stations (BS) involves global disconnection periods, which leads to a degradation of the perceived video quality. During this period, video data packets are dropped,...
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