1. DONE BY S.MURALIRAJAN M.NIRMAL
AN ADPATIVE DIGITAL IMAGE WATERMARKING TECHIQUE FOR COPYRIGHT PROTECTION
DONE BY
S.MURALIRAJAN
M.NIRMAL

2. objective
The aim of this project is to give copyright protection for the host images which used in the Internet.
software used for Implementation of this project is
Matlab 6.0.

3. synopsis
Digital watermarking technique is proposed for copyright protection for ownership identification of digital media such as audio, image, video or text
A digital signature or digital watermark is embedded in the media such that it is perceptually undetectable
It means that the normal visual of the host and watermarked image are same when it is seen by the user and it can’t be differentiated .

4. The applied technique is robust technique because the watermark never get changed even When the watermarked image is low pass filtered, compressed, processed, edited or converted digital to analog & analog to digital.
When compared to other techniques the digital watermarking technique implements a more secured copyright protected system.

5. INTRODUCTION
Digital watermarking is a technology for embedding various types content of information in digital content.
A digital watermark is a digital signature or pattern inserted into digital image

6. Need for digital watermaking
Internet boom is one of the main reason
All the information handled on the internet is provided as digital content
It can be easily copied and produced in large quantities
The copied content is indistinguishable to the original content
The original can be easily found out by using digital watermarking

7. Spatial domain watermaking Transform domain watermarking
Embedding techniques
Spatial domain
watermaking
Transform domain
watermarking

8. About spatial watermarking
In this project we are using spatial watermarking.
In this method the values are directly added to the MSB of the pixel.
In this technique we can’t determine the existence of watermark by human visual inspection and double encryption scheme.

9. TYPES OF DIGITAL WATER MARKING TECHNIQUES
TEXT IMAGE WATERMARKING
IMAGE WATERMARKING
AUDIO WATERMARKING
VIDEO WATERMARKING

10. Structure of digital watermarking
Embedding

11. Detecting watermark

12. Block Diagram

13. advantages of used techiques
Spatial domain techniques
Added in MSB
secret key
Pseduo random number
Random selected pixels

14. Properties of digital watermarking
Persistence
Robustness
Unobtrusiveness
decodability

15. Disadvantages of existing techiques
Frequency domain techniques
Dct,fourier,wavelet transform
Affect imaging processing
Low pass filtering and compression
Distortion to human eyes

16. Comparative technologies
Digital fingerprinting
Public key encryption

17. Methods of attack in digital watermarking
Compression
Rotation
Cropping
Filtering

18. Who protects images? Photographers Artists Stock photo agencies Models
Parents
Illustrators
Catalog owners

19. Applications of digital watermarking
Advertisement verification
Broadcasting
Distribution
Contents id and archive
Mastering
Remote control and triggering

20. conclusion
In this project we are proposed an adapative image watermarking algorithm .The experimental results show that proposed algorithm is robust to common image operations such as low-pass filtering and jpeg image compression.

21. THANK YOU