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The large increase of medical video archives demands effective organization for efficient retrieval and browsing. In this paper, we present a novel framework of video summarization based on the latent low-level visual and high-level semantic analysis. First, we investigate the concept hierarchy of the medical videos. Secondly, we collect textual semantic information around videos with an image-by-word...
The issue of fault-tolerant control for uncertain continuous-time multi-variable networked control systems with actuators failure is researched, where its network transmission is connected with network-induced delay and packet dropout. The complete mathematical model is derived. And the sufficient condition for asymptotical stability is analyzed and the maximum allowable delay conditions for systems...
Linear dispersion codes (LDCs) are capable of achieving a good trade-off between link throughput and link robustness in multiple input multiple output (MIMO) broadband wireless access systems. This is thanks to their efficient spreading of data across both time and space domains. This paper proposes a novel LDC design method utilising the unitary matrix theory along with a genetic algorithm (GA)....
The Landweber scheme is an algebraic reconstruction method and includes several important algorithms as its special cases. The convergence of the Landweber scheme is of both theoretical and practical importance. Using the singular value decomposition (SVD), we derive an iterative representation formula for the Landweber scheme and consequently establish the necessary and sufficient conditions for...
The queued-code based on low-density parity-check (LDPC) codes, which exploit both the near Shannon-limit performance LDPC codes and the instantaneous channel state information (CSI), can provide excellent performance in the block fading channels. The existing work utilized the conventional random puncturing and repetition operation, which may lead to considerable performance loss due to the changed...
A data puncturing type-II hybrid automatic retransmission request protocol, using LDPC codes which have the constructions with low encoding complexity and moderate matrix dimensions, is a good tradeoff between the system throughput and the hardware overhead. Based on the characteristics of this protocol that only the parity bits are sent in each retransmission and the puncturing is operated on the...
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