查询词典 steganography

An information steganography algorithm based on image chroma redundancy is structured.

提出了一种基于图象色度冗余的信息伪装算法。

In this thesis, we will mainly do research on the novel scheme for Digital image Steganography, Digital Image Secret Transmission in network and the development of the information hiding device for application. The main contributions of this thesis are as following: The novel conversion method for mapping image to complex number is proposed, and the plus, minus, multiply and complex conjugate operation of image are defined based on Positional number systems and complex number system. Following new results have been gotten: 1 The suitable complex number basis to be used to express integers is a big set. 2 Any image can be mapping into a one-to-one point. 3 Lots of image processing problem can be considered based on geometric theory.

在本论文中，研究工作集中在数字图像伪装算法的新模型、图像在网络中的加密传输的新方案和信息伪装设备的研发等三个方面，主要包括：基于位值制记数法和复数系理论，提出利用复数作为基底的数字图像新的表示方法，用复数运算定义了图像和图像间的"加"、"减"、"乘"、"共轭"等运算关系；得到理论结果： 1、能表示任何整数的复数基是很大的一个集合。2、任何一幅图像，都能和复平面上的一个点一一对应。3、可以将图像问题化归为平面几何问题处理。4、复数系下的图像表示适合用于信息伪装。

Two steganography security definitions fitted for images are proposed from different points of view. One is in terms of the relative entropy based on the reversible de-correlation transform. The other is in terms of the conditional relative entropy using the markov random field model for images.

分别从两个不同的角度提出了新的适合图像载体的掩密安全性定义：基于可逆去相关变换的相对熵安全性定义和基于Markov图像模型的条件相对熵安全性定义，并分别以不同的图像模型对这两个定义进行了讨论。

A previous text steganography scheme uses the mimic function and the Context-Free Grammar to generate pseudo-natural language text to convey secret information.

摘要基于模仿函数的Mimicry文本隐写法利用上下文无关文法构造树形结构，生成的含密仿自然文本在语义连贯性方面存在缺陷。

The aim of the steganography is to confuse the illegal eavesdropper not knowing where the secret information has.

本文对信息隐匿技术进行了研究，主要研究了将灰度图像作为秘密信息嵌入到掩护媒体中，进行秘密通信的信息隐匿技术算法。

Keywords: steganography;steganalysis;plain text;generalized character sequence

该文提出广义字符序列的概念及2种当隐蔽载体为图像时基于明文的检测方法。

In Histories written by Herodotus[1], he gives two examples of steganography.

佛于是把我变成一棵树，长在你必经的路旁。

Steganography to hide the normal vector of communication, to cover up a secret communication behavior.

隐写将通信隐藏于正常载体中，从而掩盖秘密通信的行为。

There are three kinds of technologies about this issue in steganography, Code Obfuscation, Software Watermarking and Tamper-Proofing.

目前的软件版权保护技术主要有基于加密方法和信息隐藏技术两种。

Based on the idea of threshold, a new scheme of steganography is discussed.

借助门限方案的思想，提出一类新的安全隐匿技术方案。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失