变换程序

Secondly, the platform of IPTV set-top box named DM6446 is introduced, and then the AVS video coding standard which is implemented as the video coding standard of IPTV is introduced. The kernel architecture, peripheral devices of DM6446 and the key technique of AVS video coding such as transformation, quantization, intra-prediction, inter-prediction, interpolation, and loop filter is introduced in detail. Thirdly, the system procedures of set-top box which are implemented on the ARM side of DM6446 are introduced in detail. This part focuses on the demultiplex of audio and video data, the design of data interface, the playback of audio and video, and the communication between ARM and DSP. Fourthly, the loop filter algorithm of AVS video coding standard is introduced in full detail, and the optimized procedures of the algorithm on the DSP side of DM6446 are introduced, and then the optimized results are presented. Fifthly, the thesis introduces and analyzes the state-of-art technique of deblocking filter, and proposes a deblocking method, and then the results of proposed method are given. Finally, summarize of this thesis and further development is given.

首先对IPTV技术、视频编解码技术以及去块滤波技术做了简要介绍；然后介绍了IPTV机顶盒的实现平台DM6446，并介绍了该处理器的外围接口和内核结构，同时介绍了作为本IPTV系统视频标准的AVS第二部分视频标准，以及该标准中变换量化、帧内预测、帧间预测、插值和环路滤波等多个模块的算法；接着，详细介绍了机顶盒系统相应程序在DM6446 ARM核上的实现，重点介绍了音视频系统码流的解复用、数据接口设计、音视频的播放以及ARM核与DSP核之间的通信；然后，详细介绍了AVS视频标准中环路滤波算法及该算法在DM6446 C64+内核上的优化，并给出优化结果；然后对去块滤波算法进行了研究并提出了一种环路滤波方案，同时给出了此方案的实验结果；最后总结了本文的工作，并提出了可以改进的方向。

The time-dependent Dirichlet boundary condition was used to describe the variation of water head during water level fluctuation.

模型的求解采用效率较高的积分有限差分法进行空间离散，并编制了全隐式联立求解的计算程序，通过变换主要变量，实现了饱和与非饱和的相互转变，采用随时间变化的Dirichlet边界条件精确模拟水位波动时的变水头边界条件。

The Toolbox too frequency analysis of a kind of important transformation, discrete time-frequency distribution of the toolkit,...

该工具箱为时频分析中的一类重要变换，离散时频分布的工具箱，其中提供基本算法的程序。

From different aspects of the program describes the finite discrete Fourier transform process.

详细说明：该程序从不同方面描述了有限长离散傅立叶变换的过程。

The type of encapsulation can range from simple

选择封装的类型的算法进行程序段的位序列变换。

A study was performed on the PIV algorithm based on fast Fourier transformation,and the PIV program was compiled and verified.

在粒子图像测速原理的基础上研究了基于快速傅立叶变换的粒子图像测速算法，并编制算法程序进行验证。

In addition, the algorithm has comprehensive potential application in computer graphics, computational geometry and so on. To fast and precisely select nodes and elements, some transformation functions which are implemented substitute the OpenGL's API functions, then facilitate dynamic interactive query.

为了精确、快速的选择节点和单元，作者通过对OpenGL拾取选择技术内部实现细节的深入分析，开发程序实现了一些变换函数，解决了OpenGL提供的API函数不能对节点单元的精确任意拾取的问题，并实现了节点单元的动态交互查询。

For front to the DCT floating point calculation, it must be more precise than the integer ...

为前向DCT的浮点运算，它要比整数运算更精确。该程序只适用于8×8的块变换。

This is the Fourier transform procedures, test images, very good.

这是傅立叶变换的程序，有测试图像，很好。

This is a matlab-based Fourier transform to achieve a small program, we were learning to use.

详细说明：这个是一个基于matlab实现傅里叶变换的一个小的程序，共大家学习使用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。