Abstract: Multimedia sensor node's processing power,storage capacity and communication is relatively weak,which posed a great challenge on video coding and transmission.This article will improve SPIHT(set partitioning in hierarchical trees)algorithm and propose an improved three-dimensional set partitioning in hierarchical trees(3D-MSPIHT)video coding algorithm.This algorithm uses three-dimensional lifting wavelet decomposition,improved methods of the root and partition,to achieve the resorting of coefficients and ensure that more important information can be encoded earlier in the bit stream.At the same time,it adopted the listless coding structure,as well as no need for complex and heavy motion estimation and compensation,achieved less memory and energy consumption,and considerable QoS(quality of service).The experimental results show that this algorithm is better than 3D-SPIHT,particularly in low bit rate circumstances;and compared to coding schemes such as H.264,besides the all square image quality,encoding speed enhance 11.5~11.8 times.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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