1. INTRODUCTION



1.1 INTRODUCTION

Since the rise of the Internet one of the most important factors of information technology and communication has been the security of information. Cryptography was created as a technique for encrypt and decrypt data in order to keep the message secret. Unfortunately it is sometimes not enough to keep the contents of a message secret, it may also be necessary to keep the existence of the message secret. The technique used to implement this, is called steganography.

Steganography is the ....etc

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matlab code for video watermarking lsb

Matlab code for LSB Steganography

Data Hiding


target=imread( image.jpg );
fid = fopen('message.txt','r');
F = fread(fid);
s = char(F');
fclose(fid);

sz1=size(original);
size1=sz1(1)*sz1(2);
sz2=size(F);
size2=sz2(1);

if size2> size1
fprintf('\nImage File Size %d\n',size1);
fprintf('Text File Size %d\n',size2);
disp('Text File is too Large');
else
fprintf('\nImage File Size %d\n',size1);
fprintf('Text File Size %d\n',size2);
disp('Text File is Small');
i=1;j=1;k=1;
while k<=size2
a=F(k) ....etc

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we want extraction code for Adaptive watermarking scheme for color images using lsb method in matlab. ....etc

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i want to download the ppt on digital watermark by lsb method ....etc

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to get information about the topic lsb watermarking full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-imperceptible-watermarking-algorithm-using-block-lsb-scheme-for-color-images ....etc

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Presented by:THULASI RAM P
COLOUR FUNDAMENTALS AND COLOUR MODELING

INTRODUCTION
Color is a powerful descriptor that simplifies object identification and extraction from a scene.
Characterization of light is central to the science of color.
Achromatic light is what viewers see on a black and white TV.
Gray-level is a scalar measure of intensity that ranges from black, to grays, and finally to white.
NEED FOR COLOUR:
>> Information e ....etc

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LEAST SIGNIFICANT BIT EMBEDDINGS: IMPLEMENTATION AND DETECTION

INTRODUCTION

Steganography is a method of hiding digital information so that it will escape detection that has been used by al-Qaeda, drug cartels, and others. Properly-executed steganography allows for large quantities of information to be hidden inside a file, while making no perceivable changes to that file's contents. Steganography can be applied to many types of data, including audio, video, and images and can hide any kind of dig ....etc

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Imperceptible Watermarking Algorithm Using Block LSB Scheme for Color Images
ABSTRACT
It is well known that now a day s more and more people are publishing papers, books, videos and photographs on the internet. The numerous properties of digital media have made copyrights violations easy. The simple replication and transmission as well as file sharing are just some examples. To overcome that the proposed technique is imperceptible watermarking algorithm using spatial domain block LSB scheme for color image authentication. Watermark is one ....etc

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i am doing project on invisible watermarking using contourlet and wavelet transform using matlab.can any one help by providing the source code for the project.. ....etc

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False color (or false colour) refers to a group of color rendering methods used to display images in color which were recorded in the visible or non-visible parts of the electromagnetic spectrum. A false-color image is an image that depicts an object in colors that differ from those a photograph (a true-color image) would show.In addition, variants of false color such as pseudocolor (see discussion), density slicing (see discussion), and choropleths (see discussion) are used for information visualization of either data gathered by a single gr ....etc

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