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SUMMARYIn H.264/AVC intra frame coding, the rate-distortion optimization (RDO) is employed to select the optimal coding mode to achieve the minimum rate-distortion cost. Due to a large number of combinations of coding modes, the computational burden of Rate distortion optimization (RDO) becomes extremely high in intra prediction. In this paper, we proposed an efficient selective intra block size decision (SIB) that selects the appropriate block size for intra prediction, further proposed fast intra prediction algorithm reduces a number of modes required for RDO that significantly reduces the encoder complexity. Experimental results show that the proposed fast mode decision algorithm reduces the encoding time by up to 68% with negligible video quality degradation.

The concept of smart homes (SH) has been extensively popularized, and there are a lot of technologies that need to be continuously utilized and integrated in such a concept. In this article, some applied problems of camera array (CA) in the SH are discussed and solved. Determining how to build an effective management method for CA in order to ensure that user privacy is not encroached upon is an important issue. In SH, the applications of CA are very diversified. We suggest that a satisfactory management method of CA should be based on the open service gateway initiative (OSGi) that includes resource management and monitoring (RMM) and UPnP security for the problems of resources and privacy, respectively. Finally, an applied example of CA is addressed in an elder-care center (EC). Simulation results show that the management strategy and application of CA based on an OSGi is satisfactory.

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The concept of smart home (SH) is extensively popularized; there are a lot of technologies to be continuously utilized and integrated. In this paper, an applicability problem about camera array (CA) in the SH are discussed and solved. This problem is about how to build an effective management method for CA, to ensure that the user's privacy is not encroached on. We suggest the CA should be controlled based on the open service gateway initiative (OSGi) and UPnP security. Finally, an applied example of CA is addressed in the elder-care center. Simulation results show that the management and application of CA are satisfied.