1. By
D.Bharath Kumar Reddy
(08T81A0410)

2. WHAT IS DIGITAL WATER MARKING?
WHY IS IT?
WHY TO USE IT?
PROPERTIES
CLASSIFICATIONS
GENERAL WATERMARKING SYSTEM
DIGITAL WATERMARKING TECHNIQUES
ADVANTAGES
DISADVANTAGES
APPLICATIONS
CONCLUSION
BIBILOGRAPHY

3. Digital watermarking is a technique for inserting
information (the watermark) into an image, which
can be later extracted or detected for variety of
purposes including identification and
authentication purposes.

4. Why because It describes
methods and technology that
allow to hide information.

5. ROBUSTNESS
PERCEPTUAL TRANSPARENCY
SECURITY
COMPLEXITY
CAPACITY

6. PERCEPTIABLE WATERMARKS &
IMPERCEPTIABLE
ROBUST & FRAGILE
PUBLIC & PRIVATE

8. The techniques which are used to put digital watermarks
onto the digital media are called as digital watermark
techniques.
They are:
1) Image domain encoding
2)Transform domain
3)Masking

9. Embedded water mark is easy
Implementation on pc platform is possible
Uniquely identifies author

10. Resizing,compression and converting images
from one file to another may add noise to an
image.
Some watermarks vanish if some one
manipulates the image in a program like
photoshop .

11. Military applications:
* Intelligence activities
*Traitor tracing
*Image tampering detection
Civilian applications:
* Intelligent web browsers
*Copy right protection of digital media
in hard copy

12. The large need of networked multimedia system has created the
need of copy right protection .so, it is very important to protect
intellectual properties of digital media . For this DIGITAL
WATERMARKING is the great solution for the protection of
legal rights of digital content.

13.  www.utd.edu/~bxt043000/cs4398_f7
 http://cs.uccs.edu/~sasummer/cs591/SpreadSpectrum
 http://www-scf.usc.edu/~csci530l/slides/lab-
steganography.pdf
 http://www.securityfocus.com/infocus/1684
 http://www.garykessler.net/library/steganography.html
 http://home.comcast.net/~ebm.md/stego.html