霍夫曼编码

简要介绍了基本的JPEG的编码方法，即从采样到DCT编码再到量化及最后用霍夫曼编码压缩这一过程。

The basic coding method of JPEG is introduced succinctly in the article , which includes procedures from sampling to coding DCT , to quantification and finally to compression with Huffman coding method .

针对静态测量中GPS数据的特性，采用去除信息冗余度、局部字典编码和差分霍夫曼编码相结合的策略，对测点采集的GPS数据进行信源编码。

According to the characteristics of GPS data in static measurement , information source coding was carried out for the received GPS data collected from the observation spot with the help of the combination of eliminating redundancy of data , dictionary coding and differential Huffman coding method .

到目前为止，图像压缩的研究己经产生了一些成熟的技术，如DCT变换，霍夫曼编码等。

Up to now , some mature technologies have been developed in the area of image compression , such as DCT ( Discrete Cosine Transform ) and Huffman Code .

提出一种基于霍夫曼编码的SAR浮点图像数据压缩方法.通过对DCT系数的研究分析，确定了符合SAR数据特征的量化和编码方法，实验表明压缩效果非常明显。

A float data compression method , based on Huffman coding and for SAR images , is proposed . By the analysis of DCT coefficients , the quantization and coding method suited to the characters of SAR is determined . Experiment shows its obvious effect on compression of SAR images .

从理论上分析了VIHC编码[6]的不足后，提出了一种改进的SOC测试数据压缩编码方法&变移霍夫曼编码（HSC），并给出了相应解码器的设计。

Based on the theoretical analysis on the default of VIHC ~ ( [ 5 ] ), an improved compression scheme for system-on-a-chip ( SOC ) test data compression , Huffman shift codes ( HSC ), is proposed . The corresponding design of HSC decoder is given .

图像压缩编码中的霍夫曼编码、多遍霍夫曼编码、和行程编码；

The Huffman encoding multi pass Huffman encoding and run length encoding ;

多进制霍夫曼编码方法及最优性证明

Huffman coding of many entity and demonstrating of the optimization

而且，相对于霍夫曼编码，算术编码在某些方面拥有更优异的性能。

As it is known , arithmetic coding outperforms Huffman coding in some aspects .

采用自适应分组霍夫曼编码方法及小波变换相结合对图像数据进行压缩。

Combined with the wavelet transform the method is used to compress image data .

自适应算术编码克服了霍夫曼编码的缺点，可以更逼近无损压缩编码的极限。

It is the betterment of Huffman coding and approach to the lossless compression coding limit .

在分组霍夫曼编码的基础上提出了一种更有效的编码方法，即自适应分组霍夫曼编码方法。

Based on the grouping Huffman coding method a more efficient coding method , i.e. adaptive grouping Huffman is presented .

第四章讨论了课题中采用的霍夫曼编码、预测编码和小波变换编码的理论和方法。

The fourth chapter discusses the Huffman coding method , anticipating coding method and wavelet transform coding method used in this paper .

在熵编码部分，本文比较了霍夫曼编码和算术编码的优点，并重点讨论了自适应的算术编码器的实现。

In entropy coding stage , the Huffman coding and the arithmetic coding is introduced , and the implementation of adaptive arithmetic coder is emphasized .

提出了一种使用混合模型，采用霍夫曼编码的代码压缩方法以及相应的低开销硬件解压缩实现方案。

A code compression approach combining the type model and the traditional position model and a corresponding low-overhead decompression hardware architecture using Huffman coding were also presented .

该算法扩充了空间方向树的表示符号，然后根据各符号出现的概率，按位平面采用半自适应霍夫曼编码。

Firstly , this algorithm augments expressed symbols of spatial orientation tree . Then , according to occurring probability of different symbol adopted half-adaptive-Huffman coding based on bit-plane .

无损编码根据不同子带小波系数的分布特性，采用带间预测编码，不同方向的子带采用不同的预测方式，预测误差采用霍夫曼编码。

In the latter , different predictions on each subband were adopted . Basing on different distributing property of wavelet coefficients , prediction errors were encoded by Huffman .

分析了多媒体数据进行压缩的必要性和可行性，讨论了数据压缩的基本原理，研究和分析了多媒体数据压缩常用的算法，如行程编码、霍夫曼编码、算术编码、变换编码等。

Discuss on the principle of data compress . Study and analyze the classical algorithm used in multimedia , such as Run-Length coding , Huffman coding , arithmetic coding , transform coding . 4 .

本文结合课题，在对数据压缩的原理和方法进行深入分析的基础上，分别利用霍夫曼编码和小波编码等方法实现了管道漏磁检测数据的压缩。

This paper , combined with the task and based on the thorough analyses of the theories and methods of data compression , realize the data compression of the MFL inspection data using Huffman coding and wavelet transform coding .

本文介绍FAX-PC通信系统中以改进的霍夫曼码作为压缩编码的传真文件在PC机上的一种译码方法。并给出了译码软件设计的流程框图。

This paper describes an encoding method of FAX file on PC machine in the FAX-PC Communication system which uses the improved Hoffman Code as a compact code , and gives the flowchart of encoding software design .