查询词典 absolute coding

The coding method includes the steps of representing respective digital data by digits of a predetermined same number, and coding the digital data represented by digits of the same number by a predetermined coding method from the uppermost significant digit sequence to the least significant digit sequence.

编码方法包括以下步骤：用相同的预定位数表示有关数字数据，以及使用预定编码方法自最高有效位序列至最低有效位序列将由相同位数表示的数字数据编码。

The main work and innovation1 In general , a image compression method has different effect to different image . Some are fit for image which has much high frequency . Some are fit for image which has much low frequency .This paper analysis the applicability of fractal algorithm . In this dissertation , an improved algorithum is given . The basic algorithum without eight change and the joint use of quantitative coding , The compression ratio and PSNR can be adjusted , and it can get more quickly speed of coding .2 To a group of exact fractal code , the decoding image can be any resolution .With this characteristic ,choose the proper domain block and range block,this paper get an algorithum which can get higher decoding PSNR and speed than the basic fractal algorithum.3 Give a new method to calculate the scale factor . The calculation of basic algorithum is complex and enormous . The factor of scale is an important variable of the basic algorithm. Now there are two methods to calculate the factor of scale .A new method was given to calculate the factor of scale. The calculation load and complexity are reduced by the new method. Compared with the basic algorithm , the method can reduce coding time.4 The basic fractal algorithum is based on the Collage theorem and contraction mapping theorem . A mathematic model based on basic fractal algorithum is given .

本文的主要工作及创新点主要包括以下几点：1一般情况下，一种图像压缩的方法对不同特点的图像，压缩效果会有所不同，本文利用分形压缩编码对不同特点的图像进行编码，分析了分形编码对不同图像的编码适用性，利用去掉8种变换的分形编码算法与简单的均匀量化编码方案相结合，得到了一种可以调节压缩比与解码质量的分形编码方案，该提高编码速度6倍以上。2分形编码的特点之一是分形解码的分辨率无关性，即对于一组分形编码可以将其解码到任意分辨率下，本文利用分形编码的这一特点，结合不同的量化编码方案，选择合适的定义域块与值域块及适当的编解码分辨率，得到了一种提高解码质量，编码速度提高12倍以上的加速算法。3比例因子是基本分形算法中的一个重要变量，目前有两种计算比例因子的方法，文中给出了一种新的求比例因子的方法，该方法简化了求比例因子的计算，从整体上减小了基本分形算法的计算量，简化了算法4分形压缩的数学基础是不动点定理与拼贴定理，本文根据基本的自动分形编码方法，建立数学模型对其进行推导，得到了用普通数学的极限理论解释分形编码的数学表达式，从而对由基本分形编码得到的解码图像中的像素点的值给出了确定的表达式。

First, the development survey of image coding technology is simply described. Especially, the current research status and limitations of MPEG-2 video coding algorithms and system implementation are analyzed; then, based on these, the main problems are discussed and investigated in detail, some application systems such as MPEG-2 player, MPEG-2 real-time coding system and MPEG-2 multiplexor and demultiplexor have been implemented. And the creative works are shown below.

本文首先简述了运动图象编码技术的发展概况，并着重论述当前MPEG-2视频编码算法与编、解码器系统实现的研究现状以及存在问题；然后针对其中的主要问题开展了详细讨论与研究，实现了MPEG-2软件回放器、MPEG-2实时编码系统和MPEG-2复用与解复用系统等多项实际应用系统，并取得了以下创造性成果。

Through discussing the basic principle of coding documents into numerical data, we developed a coding format and a series of coding rables.

本文根据我国自然灾害史料的特点，设计了一套由灾情发生时间、地点、灾情种类及严重程度、参考文献等要素组成的数字编码方案，详细给出了用于灾情描述的编码表，如大气圈异常、水圈响应、动植物响应、人类初级响应及政府响应等描述用语的编码表。

Throughcalculation, we find that there are remarkable differences between coding and non-coding sequences, and vector from random sequences is closely related to that fromthe coding sequences.

通过计算，我们发现，编码区和非编码区所对应的4维向量有很大不同，并且随机序列与编码区对应的向量较为接近。

Part 1: On image compression coding 1 Based on human visual property, we present a rhomb-partitioning fractal image compression coding, discuss fractal image coding of fixed-size rhomb partitioning and adaptive rhomb partitioning.

第一部分是有关图象压缩编码的： 1基于人眼的视觉特性，提出了基于菱形分割的分形图象压缩编码方法，讨论了固定菱形块分割图象·自适应菱形块分割图象的分形图象压缩编码问题，实验结果表明菱形块分割图象比方块分割图象更有效地抑制"块效应"，重建图象质量明显提高，但编码时间较长。

In the current design of the components within the ring gear, Group Technology Application of the principle components classification coding, Results of four parts coding and coding the same, the application of group technology at its processing classified as a group.

在本次设计中的零件为内齿圈，应用成组技术原理对零件进行分类编码，结果得到4种零件编码而且编码相同，所以可以在应用成组技术加工时将其编为一组。

Speech coding is one of the basic and most important components in digital communication networks. 2. 4kb/s and even lower bit-rate speech coding is always one of the most important research topics in the area of speech coding.

数字语音的编码传输是整个数字化通信网中最重要、最基本的组成部分之一。2.4kb/s甚至更低速率的语音编码技术一直是语音编码中重要的研究课题。

The method of the invention comprises the steps as follows: step 1: each frame of image is divided into N areas according to the sequence of coding and the bit flow length of each area after coding is recorded; step 2: according to the comparison result between the bit flow length of the coded area and a prearranged gate limit, the number of non-zero DCT coefficients of non-coded areas allowed in the coding process is adjusted.

本发明提供一种码率控制方法及控制装置，方法包括：步骤一、对于每帧图象，都按照编码的先后顺序划分为N个区域，并记录每个区域编码后的码流长度；步骤二、根据已编码区域的码流长度与预定门限的比较结果，来调整未编码区域在编码过程中所允许的非零DCT系数的个数。

The author gives the fundamental implementation and the state-of-art research results of distributed video coding, and conclude the comparition of distributed video coding and prediction based video coding from the information theoretical aspest.

笔者归纳了分布式视频编解码技术的基本思路和最新研究成果，并总结了前人从信息论的角度对分布式视频编解码技术和传统的预测编码技术的比较。

Fostering the concept of multi-culture firmly and mastering the development of advanced culture correctly are conductive to resisting terrorism, separatism of nationalities and ultraism of religion, which is of great academic theoretical, immediate and profound historical si...

牢固树立多元文化的理念和正确把握先进文化的发展方向，有助于在世界范围内自觉地抵制恐怖主义，民族分裂主义和宗教极端主义。不仅具有重大的学术理论意义，而且也具有重大的现实意义和深远的历史意义。

But if anyone walks in the night, he stumbles, because the light is not in him.

11：10 若在黑夜行走，就必碰跌，因为那光不在他里面。