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It's main research directions are the theory, technology and application in digital solution of news paper, digital production workflow in graphic art, cross-media solution and additive value.

合作开展传媒技术领域报业数字生产流程、印艺数字生产流程、数字生产管理、传媒产品及其增值服务等方面的理论、技术及工程应用的研究。

Easy article net the 2nd period digital publication project serves as grasper with feature of digital technology development and trend, it is project feature with relatively complete knowledge system, with knowledge link and data mining are the core of research and development of the project, offer more the number of suit individuation demand publishs a service.

易文网第二期数字出版工程以数字技术发展特征和趋势作为抓手,以相对完备的知识体系为项目特征,以知识链接和数据挖掘为项目的研发核心,提供更切合个性化需求的数字出版服务。

Evaluation of definition for gray scale digital image is an important aspect of digital imaging system.

数字图像的清晰度评价一直是各类数字成像系统的一个关键问题,而在已有的一些的评价参数中,由于评价方法不同,均存在一些局限性,为此,针对图像的清晰程度提出一种新的评价方法,目的在于能够快速、准确地评价数字图像的清晰度。

At this text I bring forward effective project strategy of non-maturity haleness watermark model arithmetic. Making use of time-frequency local characteristic of wavelet switch, I bring forward digital image watermark insetting project basing on block of wavelet switch, at the first ,make the image disporting to block of 8×8,then make use of the characteristic of Haar wavelet switch,then make the image the second layer wavelet switch and carry through power modulus transaction.

本文提出了非完备性鲁棒性数字水印典型算法中的行之有效的设计策略,利用小波变换良好的时频局部特性,提出了基于块的小波变换的数字图像水印嵌入方案,把宿主图像分为8×8的小块,利用 Haar小波变换的特性,对图像进行二层小波变换分解,对变换系数进行权重处理,然后把每一个水印象素隐藏在相应的图像块的中低频小波系数之中,提高了数字水印的隐蔽性和鲁棒性。

ABSTRACT It is the development of the digital video and all digital high definition television technology gives new energy and activity.

数字视频及全数字高清晰度电视技术的发展,给视频广播业带来新的活力和勃勃生机,加之计算机通信网络的普及,使得数字视频通信不仅在视频广播领域,同时,也在计算机互联网通信,包括在全球互联网Internet上也具有广泛的用途。

First, mathematical foundation of synchronization, i.e. the theory of parameter estimation is introduced. Then, DA/DD or NDA timing synchronization methods based on the ML estimation of timing parameter are presented. They are all widely applied in actual digital communication systems. Interpolation theory in digital signal processing has application in timing synchronization, which makes the sampling clock independent of the timing control so that timing adjustment is realized completely through digital disposal. The issue of interpolation in timing synchronization is discussed.

首先,介绍了定时同步实现的数学基础,即信号参数估计理论;从定时参数的最大似然估计出发,介绍了基于数据辅助的定时同步方法和基于非数据辅助的定时同步方法,他们在实际的数字通信系统中均有广泛应用;论文探讨了数字信号处理中插值理论在定时同步中的应用,它使得接收端的采样时钟独立于定时控制,定时调整完全通过数字处理方法得以实现。

And studies flow of slice of strokes automatically, which make valid input output in pronounce flow and flow of strokes.

对于字母ABC输入法、数字123输入法包括数字键盘到字母的转换和到数字的转换。

The concept of digital life was first presented in computer simulation experiment by Thomas.S.Ray. Based on it, the theory knowledges were introduced such as complex adaptive system and Agent model-building. Then two kinds of different digital lives and their coexistence environment were constructed. Nature lives' most foundational biological phenomenas like reproduction and annihilation were simulated. The interactive behavior between individual and community was observed by visualization windows. Finally, the inscrutability and emergence of the results were attained, and the simulation for two digital lives with Swarm was accomplished.

数字生命的概念是托马斯雷最早在计算机上模拟实验提出的,以此为指导,介绍了复杂适应系统、Agent建模等理论知识,利用Swarm仿真平台构建了两种异类数字生命及共同生存的环境,模拟自然界生命体最基础的繁殖歼灭等生命现象,通过可视化窗口观察生命体个体及群体间的交互行为,得到结果的不可测性和突现性,实现了两种数字生命的Swarm仿真。

This invention relates to a DC linear motor digital controller including a central processor circuit, a data memory, a program memory, an A/D conversion circuit, a D/A conversion circuit, a linear shift orthogonal code pulse signal circuit, a signal isolation circuit, among which, the center processor circuit is composed of a special DSP chip controlled by the motor, a complicated programmable logic device CPLD combining with a peripheral expanding circuit, said digital controller fully utilizes the motor to control the special DSP chip to integral DSP kernel CZXLP and the rich external circuit in a single chip to make up of a digital controller for controlling high frequency response DC linear motor with small volume, low dissipation and high reliability.

高频响直流直线电机数字控制器,属于电机自动控制技术领域,目的在于获得快速、高精度往返运动的控制效果,实现高频响直流直线电机的精密位置跟踪控制功能。本发明包括中央处理器电路,数据存储器,程序存储器,A/D转换电路,D/A转换电路,直线位移正交编码脉冲信号电路,信号隔离电路;中央处理器电路由一个电机控制专用DSP芯片,复杂可编程逻辑器件CPLD,结合外围扩展电路组成。该数字控制器充分利用电机控制专用DSP芯片将高性能DSP核C2xLP和丰富的功能外设电路集成在单个芯片上这一特点,构成了一个体积小、功耗低、可靠性高和功能比较齐全的高频响直流直线电机控制用的数字控制器,使系统的整体成本大大降低。

In this paper,we first introduce the theory of digital image holographic interferometry system in detail.

本文首先对数字全息干涉术中的数字图像处理理论以及数字全息干涉法实验原理作了详细研究。

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