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The constrained Viterbi algorithm (C-VA) makes use of some prior reliable information to reduce complexity andimprove performance of Viterbi algorithm (VA). However it can only be used in the concatenate code scheme because thedetection result of cyclic redundancy check code (CRC) is exploited to provide reliable information. In this paper, a differentway is proposed to provide reliable information for C-VA, which is possible to be used in simple codec. Known bits were addedto the set partitioning in hierarchical trees (SPIHT) coded image sequence periodically and directly. They were thought to bereliable information for C-VA in the decoder. Experimental results show that the proposed scheme can obtain much bettererror resilient ability compared with conventional VA under the extremely inferior channel condition if the best desired qualityof reconstructed images can be sacrificed. 相似文献
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大学生入党动机调查分析与应对策略——以武汉科技大学医学院为例 总被引:1,自引:0,他引:1
通过对武汉科技大学医学院2014级申请入党的447名新生进行问卷调查,将其入党动机划分为理想信念型、自我价值型、自我约束型、追求荣誉型、完全被动型、目的模糊型、追逐名利型七种类型,并分析影响当前大学生入党动机的主客观因素,进而探讨在新形势下端正大学生入党动机的应对策略。 相似文献
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