查询词典 digital

Digital watermarking technology, which embeds additional information into original digital data, is one of the most effective methods to verify the ownership and authenticity of information.

数字水印技术提供了解决这一问题的有效方法，已成为多媒体信息安全领域的一个研究热点，受到越来越多的关注。

The use of Digital image processing in this system is expatiated. Digital image denotation and pretreatment is recited, including disposing noise, emendating incline. Banknotes' histogram characteristic is analyzed.

阐述了数字图像处理在本系统中的应用，简要论述了数字图像的表示及预处理，包括图像的去噪声、倾斜校正，分析了纸币的灰度直方图特征。

Information security usually adopt coding and information hiding technology ,though digital watermark belongs to information hiding technology ,its signification and application intention are different with information hiding .The hiding information is similar to the protected color of animal ,because the sneak can not ensure whether there is hiding information when he face a great deal of information to avoid of attack .Digital watermark is enchased into multimedia product to identify copyright data .

大多数时间域水印算法提供简捷有效的水印嵌入方案，且具有较大的信息嵌入量，但对语音信号处理的健壮性较低；变换域水印算法则具有较强的抵抗信号处理和恶意攻击的能力，但嵌入和提取过程相对复杂；压缩域水印算法是直接把水印信号加在压缩音频上的方法，它可以避免压缩算法编解码的复杂过程，但稳健性不高，而且能够嵌入的水印容量不大[2][14]。

In a networked environment, digital media has the characteristic of being filched, modified, copied and transmitted easily, so preventing digital products being pirated and tampered randomly is an increasing important issue.

在网络时代，数字媒体具有可以轻易地被窃取、修改、非法复制和传播的特点，因此防止数字产品被侵权、盗版和随意篡改己经变得迫在眉睫。

The technology of digital filtrating wave and digital PID controlling is introduced in this system ,which effectively reduces the interference and improves the stability of the system

系统中采用了数字滤波技术和数字PID控制技术，有效的减小了系统中的干扰，提高了系统的稳定性。

Two algorithms of detecting the digital forgeries are proposed in this paper. They are based on the study of some statistical properties of digital images.

本文在对数字图像的一些统计特性进行研究的基础上，提出了两个检测篡改图像的算法。

According to the requirement of application, design scheme and functional structure of digital simulator of jamming environment of GAMS are proposed;some technical problems about simulator design are also discussed3 and a digital simulator of jamming environment of GAMS is implemented eventually with the C language.

分析了在现代战争环境下，地空导弹武器系统面临的干扰环境，提出了地空导弹武器系统干扰环境数字仿真器的设计方案和功能构成，探讨了仿真器设计中的一些技术问题，并依此用C语言实现了一个干扰环境仿真器的设计。

For example, the eGranary Digital Library is an ICT access tool for digital educational resources that garners permissions, copies web sites, and delivers assets to partner institutions in developing countries.

例如， eGranary 数字图书馆是一个 ICT 访问数字教育资源的工具，它可收藏许可证、复制网站并且传送有用的资源给发展中国家的合伙机构。

This article according to the characteristic of traditional signature and stamper, combinic the demands of signature and seal in e-Government-affair work information system, inosculates the technology of middleware and e-Government-affair security, makes use of Object Oriented and component technology, integrates correlation knowledge of compositive cryptogram, PKI, seal digital image, ActiveX etc, studies and achieves digital e-signature-seal middleware based on Web which is used in Internet/Intranet environment.

本文根据传统签名、盖章的特点，结合高校、政府等办公信息系统中的盖章签名需求，把WEB安全技术和中间件技术相融合，利用面向对象和组件技术，集成密码学、公开密钥体系PKI、印章数字图像、ActiveX控件等相关知识，研究并设计了一个应用于Internet/Intranet环境中的基于WEB的电子印章中间件。

The digital jetting forming system realizes the digital parallel design and the manufacture of IFMC.

该数字喷射成形加工系统实现了理想材料零件的数字化并行设计与制造。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。