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OPTICAL CAMOUFLAGE. M.SASIDHAR 07231A0581 CSE. Optical Camouflage. What is Optical Camouflage?. It’s developed by scientists at the University of Tokyo . Optical camouflage is a kind of camouflage in which one wears a cloth which projects the background so that he

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OPTICAL CAMOUFLAGE


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optical camouflage

OPTICAL CAMOUFLAGE

M.SASIDHAR

07231A0581

CSE

Optical Camouflage

what is optical camouflage

What is Optical Camouflage?

  • It’s developed by scientists at the University of Tokyo.
  • Optical camouflage is a kind of
  • camouflage in which one wears a cloth
  • which projects the background so that he
  • appears somehow invisible.

Optical Camouflage

what is invisibility cloak

What is Invisibility Cloak?

The invisibility cloak renders the human partially invisible, when he/she slips beneath the shining, silvery cloak.

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How Invisibility Cloak is Real?

Optical camouflage requires a complicated arrangement. First, the person who wants to be invisible (Person A) wears the cloak. An observer (Person B) stands before (Person A) at a specific location. At that location, (Person A) appear to be partially invisible to (Person B). If (Person B) were viewing from a slightly different location, he would simply see (Person A) wearing a cloak.

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The Invisibility Cloak

The cloak that enables optical camouflage to work is made from a special material known as

retro-reflective material.

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Retro-Reflectivity :

Optical Camouflage

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Principle :

Optical camouflage doesn't work by way of magic. It works by taking advantage of something called augmented-reality technology.

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Requirements :

  • A garment made from highly reflective material
  • A video camera
  • A computer
  • A projector
  • A special, half-silvered mirror called a combiner

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The Complete System :

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Video Camera :

Capturing the background image requires a video camera, which sits behind the person wearing the cloak. The video from the camera must be in a digital format so it can be sent to a computer for processing.

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Computer :

All augmented-reality systems rely on powerful computers to synthesize graphics and then superimpose them on a real-world image.

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Computer :

For optical camouflage, the Computer must take the image from the video camera, calculate the appropriate perspective to simulate reality to be projected onto the retro-reflective material.

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Projector :

For optical camouflage, the central opening must be the size of a pinhole. This ensures a larger depth of field so that the cloak can be located any distance from the projector.

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Combiner :

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. This special mirror is called a beam splitter, or a combiner.

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Combiner :

The combiner allows the user to perceive both the image enhanced by the computer and light from the surrounding world.

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Combiner :

Combiner is critical because the computer-generated image and the real-world scene must be fully integrated for the illusion of invisibility to seem realistic.

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Real World Applications

  • It is mainly used in Military i.e.., Stealth Technology, to make airplane invisible from Radar

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Real World Applications

  • Doctors performing surgery could use optical camouflage to see through their hands and instruments to the underlying tissue.

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Real World Applications

  • Pilots landing a plane could use this technology to make cockpit floors transparent. This would enable them to see the runway and the landing gear simply by glancing down.

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Real World Applications

  • Drivers backing up cars could benefit one day from optical camouflage. A quick glance backward through a transparent rear would make it easy to know when to stop.

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Disadvantages :

  • Surface is used as the reflector will be having the natural folds and wrinkles in the material.
  • The target can only be in a certain field of view

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Disadvantages :

  • Partial Invisibility
  • Requires Expensive Equipment.

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Conclusion :

Although this is having some disadvantages, Optical Camouflage is a nice technology. However further developments are being going on. I believe this is going to change the entire world.

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ANY

QUERIES

?

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Thank you

Optical Camouflage