针对实际应用中的缓冲区的限制,我们还提出了滑动窗口的码率分配方案。
To satisfy the buffer constrain in practice, a sliding window based rate allocation scheme is also proposed.
同时,该算法的计算复杂度低,完全能满足视频服务器实时码率分配的要求。
Simultaneously, the computational complexity of the proposed method is low enough to meet the requirements of the real time rate allocation at the video server.
该文提出了一种基于感兴趣区的MPEG-4FGS增强层码率分配算法。
ROI-based rate allocation algorithm for the MPEG-4 FGS enhancement layer is proposed in this paper.
该算法解决标准中原算法码率分配过于平均和不能充分利用已编码帧历史信息的问题。
The method resolves problems in the standard method when the bit allocation is too uniform and the encoded frame history information is omitted.
同时在尽可能满足图像质量一致性的基础上,基于几种码率分配策略提供了系统测试结果。
Analytical results are provided based on several bit-rate allocation strategies aiming to accommodate picture quality consistence.
实验结果表明,与平均码率分配算法相比,该算法可以显著降低视频图像中人眼感兴趣区域重建质量的波动。
The experimental results show that, compared with the conventional average rate allocation algorithm, the proposed algorithm can significantly eliminate the quality fluctuation of ROI.
提出均方误差最小意义上的最佳三维子带码率分配算法,该算法在任意给定码率限制条件下都能获得最优率失真性能。
An optimal subband rate allocation algorithm in mean-squared error (MSE) minimization sense was proposed, which achieves persistent optimal rate-distortion performance under any given rate constrains.
本文将编码码率分配技术和不等差错保护技术进行很好地融合,实现了一种通用、有效的联合信源信道编码传输系统。
The main contribution of this thesis is: 1 this approach combines a simple but yet elegant concept that joint source-channel rate allocation with UEP to realize a general and effective JSCC system.
该文根据信源编码压缩比、信道码率及信道特征对渐进图像传输失真的影响,提出一种基于最小图像失真的动态码率分配策略。
A dynamic rate allocation method is presented which is based on the compression rate of image source coder, channel rate, channel characters and their influence on the distortion of progressive image.
为了提高传输质量,结合JPEG2000信源和FEC信道编码的统计特性,提出了一种基于非均匀错误保护的最优码率分配技术。
Based on unequal error protection with jointing JPEG2000 source and FEC channel coding, a novel optimal rate allocation technology is proposed.
提出一种面向立体视频的比特分配与码率控制算法以提高立体视频的编码效率和码流可靠性。
A new bit-allocation and rate-control algorithm for stereo video coding was proposed to improve its coding efficiency and stream reliability.
用计算机仿真的方法在数字用户环路上实现了该算法,并测定其数字用户环路上所能获得的最大传码率,分析最大传码率与发送总功率的关系,给出比特分配结果。
On the digital subscriber loop we realized the algorithm, got the max receiving bit, analysed the relation between the max receiving bit and transmitted power, and got the result of bit allocation.
量子误码率是量子密钥分配系统的重要参数之一。
Quantum bit error rate is an important operating parameter in quantum key distribution.
实验结果表明,与JVT-H017提案相比,改进算法可以更精确地分配目标比特和控制码率,并能获得较高的PSNR。
Simulation results show that, comparing with JVT-H017, the proposed method can allocate the target bits and control the rate more accurately, and obtain a higher PSNR.
在优化系统误码率(SER)性能方面,二者具有基本类似的功率分配方案;
Secondly, DF and AF have similar power allocation schemes to optimize the SER performance.
给出了一种结合码字预分配和直接缓冲器控制的码率控制方法。
In this paper a rate control method is studied that combines pre-distribution of bits with direct buffer control.
然后,采用宏块层码率控制策略来分配目标比特;
Secondly, macroblock layer rate control strategy is used to distribute target bits.
建立一种自适应编码比特数分配模型,引入重建图像质量控制机制,通过衡量重建图像的质量调节码率控制参数。
It used an adaptive bits allocation model and reconstructed the video quality control mechanism to adjust the rate-control parameters.
该方法基于率失真曲线的精确理论模型,对小波分解后的不同子带提供最优的动态比特分配从而实现了小波系数的自适应量化编码,最后还实现了码率控制。
It provides optimal dynamic bit allocation for sub-bands of DWT and realizes adaptive quantization for wavelet coefficients. At last, it provides exact rate control for the coder.
由于单光子探测器响应速率的限制,目前的量子密钥分配系统的码率很低,限制了它的实际应用。
Due to the limit of response speed of the present single-photon detector, the code rate is still too low to come into practical use for the present quantum key distribution (QKD) system.
利用它可实现快速的单光子探测,提高量子密钥分配系统的码率,促进量子密钥分配系统的实际应用。
The single-photon prompt detection can come true for high repetition-rate pulses. The applying of this detector will largely raise the code rate of the QKD, and boost the commercial use.
结果表明,该算法在误码率性能上明显优于等比特分配算法,也减少了系统的传输功率。
The result shows that this algorithm is better than that of constant bit rate distribution on the performance of error rate in the addition of reducing the transmission power of system.
并结合次优功率分配,进一步降低系统的误码率。
And combined with the near optimal power allocation, the proposed scheme further reduced the symbol error probability.
该方案可以充分利用所分配的有限计算资源优化编码率失真性能。
The solution can fully use the limited computing resources to achieve optimal rate-distortion performance.
该方案可以充分利用所分配的有限计算资源优化编码率失真性能。
The solution can fully use the limited computing resources to achieve optimal rate-distortion performance.
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