• 比较了目前分布式视频系统各种估计算法性能,提出了改进率估计算法。

    With a comparison on a few of rate estimation algorithms, an improved methods resided in the decoder is proposed in this paper.

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  • 试验结果证明,该算法能够将计算复杂度降低快速搜索运动估计算法3%,而PSNR几乎快速全搜索算法得到的结果相当。

    Experimental results show that our algorithm can reduce the computational-complexity to 3% of fast full search motion estimation algorithm, with negligible PSNR loss and bit rate increase.

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  • 运动矢量预测视频技术中的一个重要组成部分直接关系到运动估计精度码率大小。

    Motion Vector prediction forms a key part of video coding technique in that it directly affects the bitrate and performance of motion estimation.

    youdao

  • 系统码率BER分析显示干扰估计接收机系统性能要优于传统的接收机系统。

    The analysis of bit error rate (BER) indicates that the system with interference estimate receiver has advantage over traditional system.

    youdao

  • 为了实现透明质量语音提出了基音周期估计算法

    A kind of robust pitch estimation algorithm is presented for parametric speech coding with transparent quality at very low bit rate.

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  • 论文研究MPEG - 4标准实现MPEG - 4视频软件原型基础上,重点研究了编过程中的项关键技术运动估计控制

    This paper research the MPEG-4 standard and realize the software prototype of the MPEG-4 video codec. The paper emphasize two key techniques in MPEG-4 encoder: Motion Estimation and Bit Rate Control.

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  • 结果表明,用算法可以精确估计载波相位有效降低系统码率

    The simulation for QPSK shows that the algorithm can estimate the carrier phase and frequency offset accurately and reduce the system BER effectively.

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  • 由于AFEC动态特性使业务实际传输速具有不固定性,因此估计有效带宽考虑AFEC的影响

    Due to the dynamic code rate of AFEC, its effect would be taken into account in estimating the effective bandwidth.

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  • 运动矢量修正技术调整型算法可以屏蔽网络异构性,但导致参考帧数据发生变化需要重新进行运动估计

    Motion Vector Refinement: Bit rate adaptation transcoding adapt the network heterogeneity, which makes the reference frame changed. The motion estimation is needed.

    youdao

  • 发明提高时延高码率网络上的链路带宽估计准确性

    The invention promotes estimation accuracy for link bandwidth of large time delay high error code rate satellite network.

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  • 从理论上分析该算法所能达到信道估计误差下限比特码率下限,并提出了最优叠加导频序列设计准则。

    Theoretical results of the lower bound of the bit error rate as well as the channel estimation error of the proposed algorithm were given.

    youdao

  • 从理论上分析该算法所能达到信道估计误差下限比特码率下限,并提出了最优叠加导频序列设计准则。

    Theoretical results of the lower bound of the bit error rate as well as the channel estimation error of the proposed algorithm were given.

    youdao

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