量化器

基本解释 (translations)

quantizer

词组短语

digital quantizer

与量化器相关的网络例句 [注：此内容来源于网络，仅供参考]

At the same time, the practical implementation of evolutionary algorithm is given in order that evolutionary algorithm is introduced into vector quantizer. In the fourth section the asymptotic theory of vector quantization is studied. Then the partial distortion theorem that when codebook size is large enough, each region of the partition makes an equal contribution to the distortion for an optimal quantizer, which is the key part of vector quantizer is obtained. Finally, the competitive learning algorithm based on the partial distortion theorem is proposed, which introduces the subdistortion of each region into the distortion measure to assure that the subdistortion of each region approximately equals to each other.

第四章详细研究矢量量化的渐近理论，然后得出了矢量量化器设计的核心部分——部分失真定理，当码本尺寸足够大且输出矢量的渐近概率密度与输入矢量的概率密度的幂成比例时，最优量化器划分的各个区域对该量化器的平均误差产生相同的影响，最后提出基于部分失真定理的竞争学习算法，它通过在误差测度中，引入与各区域相关的子误差以保证各区域的子误差近似相等，该算法实现较为简单，在一定程度上确保全局最优。

For reducing boundary distortion area, the elevations of grid DEM are viewed as a discrete sequence under a generalized coordinate, so that the boundary problem of two-dimensional discrete wavelet transform is turned into the boundary problem of one-dimensional discrete wavelet transform, which not only greatly reduces the boundary distortion area, improves the precision of reconstructed DEM data near the boundary, but also decreases the number of zeros adding on the boundary for wavelet transform, and boosts the compression ratio. On the basis of analyzing the distribution characteristics of coefficients in low and high frequency bands, a mixed entropy coding plan is applied, and a high efficient quantizator called"self-adaptive hard threshold"is established, which is helpful for improving the precision of the reconstructed DEM data and for enhancing compression ratio.

为了减小小波变换山区格网DEM数据压缩中边界失真区域，将山区格网DEM高程值视为广义坐标下的离散随机序列，把二维离散小波变换中的边界问题转换为一维离散小波变换中的边界问题，不仅大大减少了小波变换边界失真区域，提高了重构DEM数据边界点的精度，而且减少了边界补零个数，提高了压缩比；通过对山区格网DEM数据小波变换低频区和高频区变换系数分布特点的分析，采取了霍夫曼—游程混合熵编码方案，设计了高效、低失真的"自适应硬阈值"量化器，即对低频区变换系数不进行量化，直接进行霍夫曼编码；对高频区变换系数则先用"自适应硬阈值"方法量化处理，再进行游程编码。

Any method that quantizes samples independently of past and future samples, with the same quantizer for all samples.

对全部取样用同一量化器进行量化而且又与以前和将来的取样无关的任何一种量化方法。

If this value is 100, it takes the average quantizer computed from the last 100 frames, and then assumes that average quantizer for the next frame.

如果这个值设为100，那么他将平均前100个量化器的值为下帧估算出的量化器参数。

Because quantizer has not existed at optimizing gain filter, the quantization SNR can not be used to evaluate its performance.

但是，由于考察增益预测器时量化器还不存在，因此无法用量化信噪比评价滤波器性能。

More detailed content of this dissertation are as follows In the second section the definition of vector quantizer is firstly given. Then the features of conventional codebook design algorithm are briefly presented.

本文的绪论部分对相关技术作了充分的回顾，其后的内容如下：第二章首先介绍矢量量化器的定义，接着简要给出常用的码本设计算法的特点，最后讨论矢量量化器的设计与实现。

First, we have designed an effective method independent of quantizing signal noise rate in evaluating the performance of gain filter. This provides a way to compare and evaluate different optimizing schemes before gain quantization, forms a way of independent research between gain predictor and gain quantizer.

第一，提出了一种不依赖量化信噪比评价增益滤波器性能的方法，可在增益量化之前直接比较评价增益预测器的各种优化方案，形成了增益预测器与增益量化器分别独立进行优化的方法。

The thesis also gives the estimated upper bounds of error decision probability. When the compressor is confined to be a lattice vector quantizer, a explicit mathematic equation for the rate of the performance convergence to the optimum is derived. On the other hand, Distortion Ratio Aproachs to the design of testing system on the basis of vector quantization are put forward, and methods for building the variable length decision tree as well as the fixed length one presented.

在算法方面，提出了失真比矢量量化检验器的设计方法以及可变长和固定码长分类判决树的生成算法；为了解决以矢量量化器为核心的处理系统运算量大，不易实时实现的问题，论文中引入了熵减的概念，在此基础上提出一种快速最近邻搜索编码方法，理论分析及实验结果均证实了这种算法的有效性。

Secondly, the author has researched the wavelet coefficients distribution property based on the histgram of detail subimages, and proposed an adaptive image quantization algorithm according to local data distribution in every subimage. In this quantization procession, every subimage will be disparted to some sub-blocks, and the sub-blocks will be quantized with different quantizer according the coefficients distribution; when the bias is large, the sub-block will be quantized with high accuracy; when the bias is little, the sub-block will be quantized coarsely.

其次，作者通过对小波高频子带图像系数分布直方图的分析研究，根据高频子带图像中绝大多数系数的幅度很小、幅度大的系数出现的几率很小的特点，提出了一种基于子带图像局部数据分布特征的自适应量化算法：先把高频子带图像分成较小尺度子块，子块系数离散性越大，采用精度越高的量化器：子块系数分布越集中，使用精度较低的量化器。

The quantizer can perform dynamic quantization for wavelet coefficients after the determination of the best quantization steps {qi} that minimize the average mean square error at a given bit rate.

在为DWT 系数确定好一组使给定码率下均方误差最小化的最佳量化步长{qi}后，该量化器将能够实现小波系数的动态量化。

与量化器相关的网络解释 [注：此内容来源于网络，仅供参考]

codebook creation：分类量化器

机制创新:system creation | 分类量化器:codebook creation | 艺术创作:art creation

PDQ Prognosticate Difference Quantizer：预测差分量化器

PDQ Parallel Database Query 并行数据库查询 | PDQ Prognosticate Difference Quantizer 预测差分量化器 | PDQ Programmed Data Quantizer 程控数据量化器

quantizer：量化器

同时你也可以降低"MaxI/P-framequantizer"的值来提高画质,这样带来的问题是:如果你减少了量化器(quantizer)的设置范围,编码器的可用量化器级别也就减少了,因此,最终生成的文件体积可能会稍稍偏离你以前在"Desiredsize(Kbytes)"所指定的文件体积值.

Uniform quantizer：均匀量化器

Uni-directinoal microphone 单方向性话筒 | Uniform quantizer 均匀量化器 | Unlocked 未上锁,不同步,不锁定

Uniform quantizer：匀称量化器

Uni-directinoal microphone 单标的目的性发话器 | Uniform quantizer 匀称量化器 | Unlocked 未上锁,不同步,不锁定

Uniform quantizer：均匀量化器KMd中国学习动力网

Uni-directinoal microphone 单方向性话筒KMd中国学习动力网 | Uniform quantizer 均匀量化器KMd中国学习动力网 | Unlocked 未上锁,不同步,不锁定KMd中国学习动力网

differential quantizer：差值量化器

housemasterly 像男舍监的 男舍监式的 | differential quantizer 差值量化器 | fumaricine 蓝堇辛

quantizer register：量化器寄存器

quantized oscillator 量化振荡器 | quantizer register 量化器寄存器 | quantizer 数字转换器

linear quantizer：线性量化器

线性功率放大器 linear power amplifier | 线性量化器 linear quantizer | 线性整流器 linear rectifier

linear quantizer：线性变换器,线性分层器,线性量化器,线性脉冲调制器

linear pulse motor 直线步进电动机,直线脉冲电动机 | linear quantizer 线性变换器,线性分层器,线性量化器,线性脉冲调制器 | linear radial sweep 线性径向扫描