31-12-2010, 03:09 PM
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What is Optical Camouflage?
Optical Camouflage is a kind of active camouflage that makes objects virtually transparent by using a technology named Retro-Reflective Projection (RPT)
ADVANTAGES----
Optical Camouflage can be used on surgical globes or equipments so they don’t block surgeon’s view during delicate operations. In aviation, cockpit floors could become 'invisible' to assist pilots during landing.
DISADVANTAGES--- The weak point of this technique is that the observer needs to look through a half-mirror. The current system needs a half mirror and projectors, which were fixed on the ground.
Optical camouflage requires these things, as well, but it also requires several other components. Here's everything needed to make a person appear invisible.
A garment made from highly reflective material
• A video camera
• A computer• A projector
• A special, half-silvered mirror called a combiner
Garment--The garment is made of a special material that we'll examine more closely in a moment.
Video Camera---- Capturing the background image require 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.
Projector-----The modified image produced by the computer must be shone onto the garment, which acts like a movie screen. A projector accomplishes this task by shining a light beam through an opening controlled by a device called an iris diaphragm.
