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视频质量平滑中恒定SNR比特分配
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作者 康显桂 Zhuang Xin-hua 《电子与信息学报》 EI CSCD 北大核心 2007年第10期2444-2447,共4页
该文提出了一种基于恒定SNR的单次扫描帧级比特率分配的视频质量平滑方案(CSNRBA)。采用之前所有编码帧的SNR的递减几何级数加权平均值作为当前帧的目标SNR,再根据国际上最近提出的闭合形式D-Q分析模型和线性码率模型,准确计算当前帧的... 该文提出了一种基于恒定SNR的单次扫描帧级比特率分配的视频质量平滑方案(CSNRBA)。采用之前所有编码帧的SNR的递减几何级数加权平均值作为当前帧的目标SNR,再根据国际上最近提出的闭合形式D-Q分析模型和线性码率模型,准确计算当前帧的比特预算。实验结果表明,该文提出的CSNRBA算法提供了比保持PSNR恒定算法和目前广泛采用的恒定比特率分配算法都要平滑得多的视频质量,并在物体清晰度、轮廓和自然色彩方面明显改善了传输视频的主观质量。 展开更多
关键词 SNR恒定 码率控制 比特分配 视频流 视频质量平滑
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Error Detecting Dual Basis Bit Parallel Systolic Multiplication Architecture over GF(2^m)
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作者 Ashutosh Kumar Singh Asish Bera +2 位作者 Hafizur Rahaman Jimson Mathew Dhiraj K.Pradhan 《Journal of Electronic Science and Technology of China》 2009年第4期336-342,共7页
An error tolerant hardware efficient verylarge scale integration (VLSI) architecture for bitparallel systolic multiplication over dual base, which canbe pipelined, is presented. Since this architecture has thefeatur... An error tolerant hardware efficient verylarge scale integration (VLSI) architecture for bitparallel systolic multiplication over dual base, which canbe pipelined, is presented. Since this architecture has thefeatures of regularity, modularity and unidirectionaldata flow, this structure is well suited to VLSIimplementations. The length of the largest delay pathand area of this architecture are less compared to the bitparallel systolic multiplication architectures reportedearlier. The architecture is implemented using Austria Micro System's 0.35 μm CMOS (complementary metaloxide semiconductor) technology. This architecture canalso operate over both the dual-base and polynomialbase. 展开更多
关键词 Bit parallel error correction finitfield Reed-Solomon (RS) codes SYSTOLIC very large scalintegration (VLSI) testing
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