OPTICAL CAMOUFLAGE

CONTENTS: Introduction History Active camouflage Process Cloaking Retro-reflective Projection Technology (RPT) Altered reality Working Applications Drawbacks Conclusions Reference

WHERE DID ALL THIS BEGIN? Three professors at University of Tokyo

-Susumu Tachi- Masahiko Inami -Naoki Kawakami

Before Now

ACTIVE CAMOUFLAGE: Adaptive camouflage Coatings capable of changing color or luminosity. Differ from more conventional means of concealment in two important ways.

PROCESS:

CLOAKING:

• It is the bending of light around an object, so as to give the illusion of there being nothing in the way

• Retroreflectum

INVISIBILITY CLOAK:

RETRO-REFLECTIVE PROJECTION TECHNOLOGY:

Dimmer switches Increasing/decreasing the light source Increasing/decreasing the observation

angle

Retro-Reflectivity Adjustments:

ALTERED REALITY:

Monitor Based Augmented Reality:

WORKING:

High-end device Two types of professional cameras

VIDEO CAMERA :

A projector accomplishes this task by

shining a light beam through an opening controlled by a device called an iris diaphragm

PROJECTOR:

For optical camouflage to work, the hardware/software

combo must take the captured image from the video camera

COMPUTER:

COMBINER:

The system requires a special mirror to both reflect the projected image toward the cloak and to let light rays bouncing off the cloak return to the user's eye

1.Augmented stereoscopic vision in surgery2.Cockpit floors3.Transparent rear hatch 4.Stealth technology

REAL WORLD APPLICATIONS:

DRAWBACKS: Large amount of external hardware

required The illusion is only convincing when

viewed from a certain angle Hyper pixel- 180 x 180 LED

CONCLUSION:

This technology is still at its developing state. Can be explored in a better