OPTICAL CAMOUFLAGE

A SEMINAR REPORT

Submitted by

BAVANI SHANKAR.A

In partial fulfillment for the award of the degree

of

BACHELOR OF TECHNOLOGY

In

ELECTRONICS AND COMMUNICATION ENGINEERING

DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

PRAJNA INSTITUTE OF TECHNOLOGY AND MANAGEMENT

(approved by AICTE and affiliated to JNTU University, Kakinada)

Ramakrishnapuram, PALASA – 530046

JAN 2011

DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING

PRAJNA INSTITUTE OF TECHNOLOGY AND MANAGEMENT

(approved by AICTE and affiliated to JNTU University, Kakinada)

Ramakrishnapuram, PALASA – 530046

JAN 2011

Bonafide Certificate

Certified that this is a bonafide record of the Seminar Entitled

“Optical Camouflage”

Submitted by

BAVANI SHANKAR .A

Of 4th year 2nd semester, Electronics and communication engineering in the year 2011 in partial fulfillment of the requirements to the award of Degree Of Bachelor Of Technology in Electronics and communication engineering of Prajna Institute Of Technology and Management.

Head of the department

K. Kedareswara Rao, M.tech

Associate Professor

Dept. of ECE

PITAM, Palasa.

ACKNOWLEDGEMENT

I also express my gratitude to K. Kedareswara Rao, Head of the Department and my Seminar Guide for providing me with adequate facilities, ways and means by which I was able to complete this seminar. I express my sincere gratitude to him for his constant support and valuable suggestions without which the successful completion of this seminar would not have been possible. I express my immense pleasure and thankfulness to all the teachers and staff of the Department of Electronics and communication engineering, for their cooperation and support.

ABSTRACT

This paper describes a kind of active camouflage system named Optical Camouflage. Initially, Camouflage is made understood and then the theory of optical camouflage is developed. Optical Camouflage uses the Retro-reflective Projection Technology, a projection based augmented–reality system, composed of a projector with a small iris and a retro reflective screen. The concept of optical camouflage is straightforward: to create the illusion of invisibility by covering an object with something that projects the scene directly behind that object. This system was conceived with the primary view in mind of concealing stationary or moving objects such as men, vehicles, or aircraft from view and has practical military, law enforcement, and security applications.

Table of contents

Chapter Contents Page no.

1 Introduction 1 1.1 Optical Camouflage- an overview 2

2 Block Diagram 3 2.1 Description 3

2.2 Working 4

3 Retro reflectivity 5

4 Video Camera & Projector 10

4.1 Video Camera 10

4.2 Projector 11

5 Computer and Combiner 12

5.1 Computer 12

5.2 Combiner 12

6 Real World Applications 13

7 Drawbacks 16

8 Future Enhancements 17

9 Conclusion 18

10 References 19