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Abstract and history


For years, people have devised different techniques for encrypting data while others have attempted to breakthese encrypted codes. For our project we decided to put our wealth of DSP knowledge to use in the art of steganography. Steganographyis a technique that allows one to hide binary data within an image while adding few noticeable changes. Technological advancementsover the past decade or so have brought terms like“mp3,”“jpeg,”and“mpeg”into our everyday vocabulary. These lossy compression techniques lend themselves perfectly for hiding data. We havechosen this project because it gives a chance to study several various aspects of DSP. First, we devised our own compressiontechnique which we loosely based off jpeg. There have been many steganographic techniques created so far, which compelled us tocreate two of our own strategies for hiding data in the images we compress. Our first method, zero hiding, adds the binary data intothe DCT coefficients dropped in compression. Our other method, which we called bit-o-steg, uses a key to change the values ofcoefficients that remain after compression. Finally, we had to find ways to analyze the success of our data hiding strategies, sothrough our research we found both DSP and statistical methods to qualitatively measure our work.

A brief history of steganography

Steganography, or“hidden writing”can be traced back to 440 BC in ancient Greece. Often they would write amessage on a wooden panel, cover it in wax, and then write a message on the wax. These wax tablets were already used as writingutensils, so the hiding of a message in a commonly used device draws very little suspicion. In addition to use by the Greeks, thepractice of steganography was utilized by spies in World War II. There were even rumors that terrorists made use of steganographyearly in 2001 to plan the attacks of September 11

Questions & Answers

I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
How can I make nanorobot?
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Source:  OpenStax, Elec 301 - steganography - what's in your picture?. OpenStax CNX. Dec 14, 2005 Download for free at http://cnx.org/content/col10316/1.2
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