Steganography In Images
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
computer science crazy
Super Moderator
******

Posts: 3,048
Joined: Dec 2008
#1
21-09-2008, 11:41 PM


The word Steganography literally means ?covered writing? as derived from Greek. It encompasses all methods of secret communication that conceal the very existence of the message.

Digital technology gives us new ways to apply Steganographic techniques including one of the most intriguing that of hiding information in the digital images. A popular method is the LSB encoding, so encoding and detection of LSB Steganography is discussed in detail. Steganography goes well beyond simply embedding text in an image.

It also pertains to other media, including voice, text, binary files and communication channels. The importance of techniques that can reliably detect the presence of secret message in images is increasing. Research has been pursued in the study of estimating the initial bias from stego images to improve the sensitivity of the RS detection method to short messages in digital images.
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
Reply
seminar surveyer
Active In SP
**

Posts: 3,541
Joined: Sep 2010
#2
24-12-2010, 12:09 PM

Prepared By:VEETHICA SRIVASTAVA


.ppt   STEGANOGRAPHY IN IMAGES.ppt (Size: 255 KB / Downloads: 385)


STEGANOGRAPHY : DEFINED
Comes from the two greek words
steganos -”covered”
graphie –”writing”
Steganography is the art & science of writing hidden messages in such a way that no one apart from the intended recipient knows of the existence of the message.
This can be achieve by concealing the existence of information within seemingly harmless carrier or cover.
Carrier- text,image,audio,video
HISTORY
Null ciphers (unencrypted messages):

Apparently neutral's protest is thoroughly discounted and ignored. Isman hard hit. Blockade issue affects pretext for embargo on by products, ejecting suets and vegetable oils.

Sent by a German Spy in WWII, by taking the second letter in each word the following message emerges:

Pershing sails from NY June 1.

Microdot Technology

Shrinking messages down to the size of a dot became a popular method. Since the microdot could be placed at the end of a sentence or above a j or an i.

BASIC DEFINITIONS
Cover medium: This is the medium in which we want to hide data, it can be an innocent looking piece of information for steganography, or some important medium that must be protected for copyright or integrity reasons.
Embedded message: This is the hidden message we want to put in the cover. It can be some data for steganography and some copyright information or added content for digital watermarking.
Stegokey: This is represented by some secret information, which is needed in order to extract the embedded message from the stegomedium.
Stego-medium: This is the final piece of information that the casual observer can see.
Cover-medium + embedded-message = stego-message
BASIC METHOD BEHIND STEGANOGRAPHY
IMAGES
Is an array of numbers that represent light intensities at various points or pixels.

Digital images are typically stored in either 24-bit or 8-bit per pixel files.

IMAGE COMPRESSION
LOSSY(JPEG)-Discards excess image data, removes details that are too small for human eye to differentiate. Lossy compression is frequently used on true-colour images, as it offers high compression rates.

LOSSLESS(BMP,GIF)-Lossless compression maintains the original image data exactly; hence it is preferred when the original information must remain intact. It is thus more favored by steganographic techniques.
TYPES OF STEG EXPLORED
Least significant bit (LSB) insertion

Spread spectrum image steganography

Masking and filtering.

Algorithms and transformations.

Reply
seminar addict
Super Moderator
******

Posts: 6,592
Joined: Jul 2011
#3
08-02-2012, 10:31 AM

to get information about the topic Steganography In Images full report,ppt and related topic refer the link bellow

topicideashow-to-steganography-in-images-download-seminar and presentation-report

topicideashow-to-steganography-in-images-download-seminar and presentation-report?page=3

topicideashow-to-steganography-in-images-download-seminar and presentation-report?page=2

topicideashow-to-visual-cryptographic-steganography-in-images

topicideashow-to-steganography-full-report

topicideashow-to-image-steganography

topicideashow-to-steganography-in-images

topicideashow-to-an-overview-of-image-steganography

topicideashow-to-steganography--10609

topicideashow-to-edge-adaptive-image-steganography-based-on-lsb-matching-revisited

topicideashow-to-a-novel-technique-for-image-steganography-based-on-block-dct-and-huffman-encoding

topicideashow-to-image-steganography-technique-based-on-wavelet-transform
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Message
Type your reply to this message here.


Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  Two-Stage Enhancement for Low Quality Fingerprint Images in Spatial Report study tips 0 355 22-06-2013, 03:36 PM
Last Post: study tips
Music Steganography (Download Full Report And Abstract) computer science crazy 28 26,829 20-03-2013, 09:33 AM
Last Post: study tips
  CURVELET FUSION OF MR AND CT IMAGES pdf study tips 0 264 16-02-2013, 09:40 AM
Last Post: study tips
  ONLINE VOTING SYSTEM POWERED BY BIOMETRIC SECURITY USING STEGANOGRAPHY seminar ideas 4 2,215 28-01-2013, 10:57 AM
Last Post: seminar tips
  Digital Steganography for Information Security seminar ideas 3 1,286 29-12-2012, 02:29 PM
Last Post: sai0515
  SEGMENTATION TECHNIQUES FOR UNDERWATER IMAGES smart paper boy 1 1,412 28-11-2012, 12:47 PM
Last Post: seminar tips
  Efficient Pre-processing of USF and MIAS Mammogram Images pdf project girl 0 261 22-11-2012, 04:07 PM
Last Post: project girl
  On the Euclidean Distance of Images seminar flower 0 336 12-10-2012, 01:14 PM
Last Post: seminar flower
  Two-Stage Enhancement Scheme for Low-Quality Fingerprint Images by Learning seminar ideas 0 1,051 13-07-2012, 04:03 PM
Last Post: seminar ideas
  High-performance JPEG steganography using complementary embedding strategy seminar flower 0 335 05-07-2012, 09:31 AM
Last Post: seminar flower