算术编码

小波变换和算术编码在MPEG-4中的应用

Application of wavelet transform and arithmetic coding in MPEG - 4

分布式算术编码（DistributedArithmeticCoding，DAC）是基于分布式信源编码的基本理论，使用算术编码作为编解码的核心过程一种编码方法。

Distributed arithmetic coding which based on the distributed source coding theory uses arithmetic coding as its core process .

对于剩余矩阵R的编码，通过统计的方法，采用了算术编码。

The rest matrixes R coding adopts the math coding though statistics methods .

为了编码XML文档的标签和路径，它在不同的间隔使用反向算术编码方法。

To encode the labels and paths of XML documents , it uses a reverse arithmetic encoding method over distinct intervals .

上下文相关算术编码的VLSI结构设计

VLSI Architecture Design for Content-based Arithmetic Coding

DSP数据处理模块，包括DSP的选型、雷达数据的预处理、小波变换、多级树集合分裂算法编码以及算术编码。

DSP data processing module based on DSP performs such factions as preprocessing radar data , wavelet transform , encoding algorithm of the SPIHT ( set partitioning in hierarchical trees ) and adaptive arithmetic coding .

而对去除了MSB的剩余二进制符号流，由于其相关性较弱，直接使用自适应算术编码。

Because of the low correlation in the residual binary bits , direct arithmetic coding is used .

为克服这些局限进一步提高编码效率，提出用算术编码对先进音频编码器（AAC）的缩放因子进行无损编码。

In order to improve the coding efficiency , the arithmetic coding was applied to the scale factors instead of Huffman coding .

压缩算法由QRS波识别、R-R相关预测、整数小波变换、标量量化、游长编码、算术编码等六部分组成。

It includes QRS recognition , correlative prediction of R-R interval , integer wavelet transform , scalar quantization , run-length coding and arithmetic coding .

将SPIHT算法与自适应算术编码结合应用于一维漏磁信号压缩，可以实现高压缩比、多种码率压缩编码。

Combined with adaptive arithmetic coding scheme , SPIHT algorithm modified for the one-dimensional case could compress signals with the .

他的熵编码方案采纳了基于上下文的自适应二进制算术编码（CABAC）。

Its designation of entropy coding adopts Contextbased Adaptive Binary Arithmetic Coding ( CABAC ) .

本文介绍了一个基于算术编码的灰度图象无损压缩算法，它以JPEGLS算法为基础，采用了一系列有利于算术编码的改进措施，获得了满意的压缩效果

This paper introduces a lossless compression algorithm for grey level images based on arithmetic coding The algorithm is based on the technique used in JPEG LS , and some improvements are proposed for better compression performance

算术编码的工程实现需要高性能信号处理器的支持，研究了在TMS320VC5402上实现二进制算术编码的快速算法及优化汇编程序设计，证明了其硬件算法的实用性和高效率。

Fast adaptive binary arithmetic coding and optimized assembly program design are discussed , and its practicability and efficiency are proved .

AVS标准采取了大量的新技术，包括：帧内预测、可变块大小的运动补偿、1/4像素精度插值、反整数余弦变换和上下文自适应二进制算术编码等。

AVS standard adopts amounts of new technologies , such as including of intra prediction , adaptive block size motion compensation , integer cosine transformation , quarter-pixel interpolation and context-based adaptive binary arithmetic coding .

最后通过FIR数字滤波器卷积操作的计算机数值仿真，结果表明采用这些方法运算得到的结果与传统二进制算术编码算法完全等效，可应用于混沌信号处理系统。

By computer simulation with convolution sum of FIR digital filter , the results show that the model is the same as traditional binary coding arithmetic , which can be used in chaotic signal processing systems . operation of the genetic algorithm ;

我们提出了两种提高SLS编码效率的方法，即基于上下关系的算术编码方法和低能量模式编码方法。

This paper r proposes two coding methods that improve the coding efficiency of the SLS , namely , the context-based arithmetic code ( CBAC ) method and the low energy mode code method .

据我所知道的，它基于临近的MV选择了一个算术编码上下文，然后决定使用哪个运动矢量，或是否计算出一个差值来代替。

As far as I can tell , it chooses an arithmetic coding context based on the neighboring MVs , then decides which of the predicted motion vectors to use , or whether to code a delta instead .

在此基础上本文将整数变换和算术编码与FGS增强层的编码相结合提出了一种新的FGS增强层编码的改进方法，并在H。

In this foundation , this paper unified the integer transformation , the arithmetic coding and the coding method of the enhancement layer in FGS , and proposed a new FGS enhancement layer coding method .

然后对目前常用的Huffman编码，行程编码，算术编码、DPCM编码等四种静态图像压缩方法进行了比较与分析。

Afterward , for at present in common use Huffman coding , run length encoding , N order context adaptive arithmetic encoding , DPCM coding etc. four kinds of static image compression methods make compare and analysis .

它以H.263为基础，采用了先进的帧内、帧间预测模式，4×4整数DCT变换，1/4精度运动估计和基于上下文的二进制算术编码等关键技术，使得H。

Based on H.263 , it makes use of several critical technique , such as advanced intra / inter prediction modes , 4 by 4 integer DCT transfer , motion estimation at 1 / 4 pixel level , and content-adaptive binary arithmetic coding .

给出了MPEG-4中基于小波变换的静态纹理编码，包括最低频带和高频子带的自适应算术编码的算法和仿真实验结果。

In this paper , the algorithm of still image coding mode based on wavelet transform in the MPEG-4 is analyzed , which include the adaptive arithmetic coding of the lowest frequency subband and the higher order subband . Then some experimental results are presented .

并根据灰度图像经小波变换以后系数的分布、统计特性，对现今十分流行的嵌入零树（EZW）、分层树集合分割排序（SPIHT）算术编码方法进行研究。

Based on the good statistical feature of wavelet image , it presents a study of the most popular coding methods : embedded zero wavelet ( EZW ), set partitioning in hierarchical trees ( SPIHT ) .

采用小波变换对遥感图像进行分解，将生成的频域数据按不同比特平面分别进行SBI变换并用算术编码进行压缩。

Remote sensing image was decompressed into frequency domain image by wavelet transform and the bit planes in frequency domain image were permuted by SBI transform seperately . The resulting data was compressed by arithmetic encoder .

在该标准中，规定了两种熵编码的模式，即基于上下文的自适应二进制算术编码（Context-bsaedAdaptiveBinaryArithmeticCoding，CABAC）和基于上下文自适应可变长编码（Context-bsaedAdaptiveVariable-LengthCoding，CAVLC）。

The standard specifies two types of entropy coding : Context-based Adaptive Binary Arithmetic Coding ( CABAC ) and Context-bsaed Adaptive Variable-Length Coding ( CAVLC ) .

为了验证Hilbert扫描在图像无损压缩中的有效性，利用Hilbert扫描对医疗图像像素的位置进行置换，分别用哈夫曼编码、游程编码、LZW编码和算术编码对经过Hilbert扫描处理后的数据进行压缩。

For testing the effect of Hilbert scanning to images compression , the pixels in medical images have been rearranged using Hilbert scanning , and we implement four lossless encoding schemes , Huffman coding , Run-Length encoding , lZW coding and Arithmetic coding , along with Hilbert scanning order .

该算法引入了线性索引技术和LZC算法标志位图，采用了类似于SPIHT算法的扫描顺序，将待编码流按不同种类进行算术编码。

The algorithm integrates the linear indexing technique and flag map which LZC adopts , uses the scan order which is the same of SPIHT algorithm , sends the coding stream into MQ in code process .

本文讨论了ITU－H.263建议的原理和它的一些主要特点，如PB帧模式、运动补偿、算术编码等，把它们与H.261建议和MPEG标准作了比较，并通过计算机模拟检验其效果。

63 Recommendation , such as the PB - frame mode , motion compensation . arithmetic coding , and so on . A comparison has been made between this recommendation and H. 261 plus MPEG , and the performance of H. 263 has also been tested by computer simulation .

本文算法对ROI使用Huffman编码，背景区域使用EZW编码，并且为了增大压缩比，对EZW编码码流再进行算术编码。

This paper brings forward an algorithm which realizes near - lossless image compression by using the Huffman encoding in ROI and the EZW in background region . In order to increase the compression ratio , carries on the arithmetic code again to the EZW code symbol stream .

ACDM方法利用算术编码的基本原理，使用唯一确定的编码浮点数表示数据传输路径节点序列，检测识别路径上的失效节点。

ACDM takes use of the basic principle of arithmetic coding technique , it adopts an unique certain encoded float number to denote node sequence on data transmission path , and identifies failure nodes on the path .

最后对压缩后的数据进行算术编码。

Finally , arithmetical coding was applied to code compressive data .