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DIGITALWATERMARKING

FOR PROTECTIONOF INTELLECTUAL

PROPERTYGuided By,

Mr. Abraham C.G

Asst.Professor PresentedBy,

Teena Jose

S7 EC B

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CONTENTS

INTRODUCTION

WATERMARKING

TYPES OF WATERMARK

REQUIREMENTS OF WATERMARK

LIFE CYCLE

APPLICATIONS

REFERENCES

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INTRODUCTION

Observe imageIt is an intellectual propert

Some one may spend a lot oftime and thought to compose

this image

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The image has been extended by any other personnow he is owner of image

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How to protect

image?

Problem

SolutionWatermark

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BASIC IDEA

To embed some information in digital

images so that it can not be misused orowned by others.

Click to edit Master text stylesSecond level Third level Fourth level Fifth level

Watermarkedimage

Image withoutwatermark

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WHY DIGITAL

WATERMARKING?Because digital media have following

features making easy copyrightviolations:

Ease of replication

Ease of transmission and multiple usePlasticity (easy to change format)

Editing is easy

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TYPES OF DIGITAL

WATERMARKVisible- It consists of visible messageor a company logo indicating the

ownership of the image.

Invisible- The existence of an invisible

watermark can only be determinedusing an appropriate watermarkextraction or detection algorithm.

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VISIBLE WATERMARK

Click to edit Master text stylesSecond level Third level Fourth level

Fifth levelClick to edit Master text stylesSecond level Third level Fourth level Fifth level

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REQUIREMENTS

Robustness

Imperceptibility

Security

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Robustness- The presence ofinformation can be reliably detectedeven after the image has been modifiedbut not destroyed beyond recognition.

Imperceptibility- The original coversignal and the marked signal areperceptually indistinguishable.

Security Use a secret key to generate

the watermark for security purpose

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LIFE CYCLE

Click to edit Master text stylesSecond level Third level Fourth level Fifth level

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APPLICATION

Ownership assertion

Content labeling

Usage control & Copy right protection

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CONCLUSION

Digital Watermarking provides for theprotection of intellectual property in

the digital world.

Digital Watermarking attempts to

copyright the digital data that is freelyavailable on the World Wide Web toprotect the originator's rights.

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REFERENCES

http://en.wikipedia.org/wiki/Digital_water.

http://www.digimarc.com/tech/dwm.asp

http://www.cosy.sbg.ac.at/~pmeerw/Wate

IJCEM International Journal of computa-tional Engineering & Management, Vol.12, April 2011.

http://en.wikipedia.org/wiki/Digital_watermarkinghttp://www.digimarc.com/tech/dwm.asphttp://www.cosy.sbg.ac.at/~pmeerw/Watermarking/http://www.cosy.sbg.ac.at/~pmeerw/Watermarking/http://www.digimarc.com/tech/dwm.asphttp://en.wikipedia.org/wiki/Digital_watermarking

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QUESTIONS ?

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THANK YOU