试验结果表明：在保持相近率失真性能的同时，该算法可以有效地降低编码的计算复杂度。
Experi - mental results show that this method can efficiently reduces the computational complexity while keeping similar RD performance.
其次，提出了基于PFGS的两点率失真优化的联合基本层和增强层模式选择算法。
Secondly, a two-point rate-distortion optimized joint base layer and enhancement layer mode decision algorithm is proposed for PFGS.
实验证明，基于3维小波变换的3维SPIHT编码算法在对超光谱图像压缩时，表现出了优良的率失真性能。 并且算法复杂度适中，具有嵌入式特性。
The test results show that the 3D SPIHT algorithm based on 3D DWT for hyperspectral images compression is very efficient, the algorithm is embedded and has modest complexity.
算法对传统二次率失真模型进行了改进，并结合人眼的立体视觉特性，提出了新的码率控制策略。
The conventional quadric rate-distortion model was improved and a new one was introduced by incorporating the human visual system (HVS) characteristics.
纵向分辨率和混淆失真与偏离成像中心的距离、插值算法、重建间隔和螺距等因素有关。
The longitudinal resolution and alias at off-isocenter locations are related to factors of distance from the isocenter, interpolation algorithm, reconstruction interval and pitch.
提出一种MPEG2量化器的区域自适应率失真优化算法。
This paper proposes a decision region adaptive MPEG 2 quantization algorithm.
与标准的率失真(PCRD)优化算法相比，该算法不会在计算码率失真斜率和搜索最优分层截断点时产生运算开销。
Compared with the standard post-coding rate distortion (PCRD) algorithm, the proposed algorithm has no spending in calculating rate-distortion slope and searching for optimum truncation points.
通常码率控制算法使用一定的率失真模型来决策量化参数从而控制码率。
Generally, the rate distortion model is employed to compute quantization parameter for the controlling bit rate.
提出了一种基于率失真理论的实时码率控制算法(RDTRTRC)。
A novel real-time rate control algorithm based on the rate distortion theory (RDTRTRC) is proposed.
这种算法考虑了信源在量化器量化判决区域的分布，通过寻找最小的拉格朗日率失真费用函数，获得量化器的判决电平。
The source distribution in decision region of quantizer is considered in this algorithm, and the decision level of quantizer is derived from the procedure of searching the minimum R D Lagrangian cost.
大量实验结果表明：改进的算法实现了模型参数的预测精确，提高了率失真优化性能。
Extensive experimental show that proposed scheme significantly improves model parameters prediction accuracy and enhances rate distortion performance.
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.
此算法基于多分辨率运动估计方案和新率失真模型进行预测模式快速选择，并结合带提前退出准则的快速搜索算法来加速搜索过程。
The multi-resolution motion estimation scheme and an efficient rate-distortion model are adopted with early termination rules to accelerate the search process.
通过与其他静止图像的压缩标准对比。可以看出实现的VTC编码算法不但有良好的率失真性能，而且具有许多有用的特性。
Comparison with other compression standard for still image shows that the VTC has better rate distortion performance and many attractive useful characteristic.
在以上研究的基础上，用C语言实现了基于有效比特位编码模型和率失真优化技术的码率控制算法。
With the research above, a new rate control algorithm is realized by c, which is based on the valid-bit-number coding model and the rate-distortion optimization technique.
同时，论文提出的码率控制算法还对宏块层的率失真优化过程做了改进，根据每个宏块的预测目标比特数来调整率失真优化的拉格朗日系数，使帧层码率控制效果更优。
At the same time, this paper also improves the process of RDO in the macroblock layer. Based on the prediction bits of the macroblock, the Lagrange coefficient has been modified adaptively.
FGS视频率失真和平均丢包率的关系模型，最优FEC数据分配算法的设计。
A relationship model of FGS video rate-distortion and average packet loss ratio was established, the optimal FEC data allocation algorithm was designed.
FGS视频率失真和平均丢包率的关系模型，最优FEC数据分配算法的设计。
A relationship model of FGS video rate-distortion and average packet loss ratio was established, the optimal FEC data allocation algorithm was designed.
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