'Optical Camouflage\r'

'opthalmic mask ABSTRACT: The advancement in science is devising what we may defy thought of as impossible, probable. serviceman may fail in transp bent as the s clearty terrestrials which are considered to be probably invisible. A upstart engineering science provides a way to this. In this reputation a scientific technology that is utilise to enforce this inclination is presented. The visual camouflage technology is genius of the famous scientific technologies which helps in the invention of a new type of garment called the invisible invest. This is unrivalled of the big revolutions created in the area of virtual reality.It is yet a ideal of upbraiding of coruscation by the cloak. The soulfulness who wears this cloak ordain feel as just what he feels with the ordinary cloaks but the person will be invisible to the outside environment. This is the briny advantage of this cloak. There are many other(prenominal) raise features present in this paper some t his cloak. CHAPTER 1 : INTRODUCTION: Chaitanya nominate of engineering & technology rascal 1 visual mask Although optical is a line that technically refers to all melodic phrases of open, closely proposed forms of optical camouflage would only provide invisibility in the visible portion of the spectrum.The research on the concept of invisibility was started in 1977 and was very successfully accomplished in 2003. Initially Professor Tachi from the University of capital of Japan said that he had first had the idea of development something to put on objects invisible in 1977. But the imag e was flat and unrealistic. He came up with retro-reflective substantial which causes the rise to answer as a screen and gives a transparent †or invisible †effect. Similarly, Duke University is using micro-cook beam deflection, making it appear almost as if nothing were there at all. If you’ve follow outn the movie â€Å"stimu recently Potter” then you may recognize the idea of an invisibility cloak. CHAPTER 2 : opthalmic mask: opthalmic camouflage is a hypothetical type of nimble camouflage flow rately only in a very primitive stage of development. The idea is comparatively straightforward: to create the illusion of invisibility by covering an object with something that projects the perspective directly rear that Chaitanya initiate of technology & engineering pageboy 2 visual camo object. Optical camouflage is a kind of active camouflage which completely envelopes the wearer.It displays an jut out of the scene on the side opposite the sweetheart on it, so that the purviewer can â€Å" look out by” the wearer, rendering the wearer invisible. Although optical is a term that technically refers to all forms of elation, most proposed forms of optical camouflage would only provide invisibility in the visible portion of the spectrum. Prototype examples and proposed designs of optical camouflage devices set forth linchpin to the late eighties at least, and the concept began to appear in fiction in the late nineties. CHAPTER 2. 1 : Comp atomic number 53nts of the Optical Camouflage:Optical camouflage doesnt bat by way of magic. It works by taking advantage of something called augmented-reality technology. Augmented-reality systems add reckonergenerated information to a users sensory perceptions. Most augmented-reality systems engage that users look through a special conceive apparatus to pay heed a real- valet scene enhanced with synthesized graphics. They also require a powerful computer. Optical camouflage requires these things, as well, but it also requires several other components. ? A garment made from highly reflective material A image camera ? A computer ? A projector ? A special, half-silvered mirror called a combiner; which is the viewing screen CHAPTER 2. 2 : The Cloak: Chaitanya pioneer of engineering & Technology Page 3 OPTICAL mask It is made up of retro-reflective m aterial. It has an observer that receives much(prenominal) of the reflected light and therefore sees a brighter reflection. It can be seen outlying(prenominal) away and outside in bright sunlight. CHAPTER 2. 3 : Other components: • The camera captures the digital video arse the person with the cloak. •The computer synthesizes the graphics and superimposes them on a real-world icon. • The projector shines a light beam through an orifice controlled by a device called an iris diaphragm. • The combiner (special mirror) is used to both reflect the projected image toward the cloak and let light rays live by the cloak to return to the viewer’s eye. Chaitanya set up of engineer & Technology Page 4 OPTICAL CAMOUFLAGE CHAPTER 3 : CONCEPT OF INVISIBILITY CLOAK: Chaitanya Institute of Engineering & Technology Page 5 OPTICAL CAMOUFLAGE 1.The cloak that enables optical camouflage to work is made from a special material know as retro-reflective m aterial. 2. A retro-reflective material is covered with thousands and thousands of belittled beads. When light strikes one of these beads, the light rays bounce stick out exactly in the same direction from which they came. 3. To derive why this is unique, look at how light reflects rancid of other types of surfaces. A rough surface creates a diffused reflection because the incident (incoming) light rays tolerate scattered in many different directions.A utterly smooth surface, wish well that of a mirror, creates what is know as a specular reflection — a reflection in which incident light rays and reflected light rays form the exact same angle with the mirror surface. In retroreflection, the glass beads act like prisms, change shape the light rays by a process known as refraction. This causes the reflected light rays to travel back along the same path as the incident light rays. The result: An observer situated at the light source receives more of the reflected light and therefore sees a brighter reflection.Chaitanya Institute of Engineering & Technology Page 6 OPTICAL CAMOUFLAGE CHAPTER 4 : WORKING: Chaitanya Institute of Engineering & Technology Page 7 OPTICAL CAMOUFLAGE Once a person puts on the cloak made with the retro-reflective material, heres the sequence of events: • A digital video camera captures the scene behind the person eroding the cloak. • The computer processes the captured image and makes the calculations necessary to set up the still image or video so it will look realistic when it is projected. The projector receives the enhanced image from the computer and shines the image through a pinhole-sized scuttle onto the combiner. • The silvered half of the mirror, which is completely reflective, bounces the projected image toward the person wearing the cloak. Chaitanya Institute of Engineering & Technology Page 8 OPTICAL CAMOUFLAGE • The cloak acts like a movie screen, reflecting light directl y back to the source, which in this case is the mirror. • Light rays bouncing off of the cloak pass through the transparent piece of music of the mirror and fall on the users eyes.Remember that the light rays bouncing off of the cloak contain the image of the scene that exists behind the person wearing the cloak. • The person wearing the cloak appears invisible because the background scene is being displayed onto the retro-reflective material. At the same time, light rays from the rest of the world are allowed reach the users eyes, making it seem as if an invisible person exists in an otherwise normal-looking world. CHAPTER 4. 1 : Key Challenges: • Practicality smaller computer integrated reliever of projector combiner. • Purchase patent or license. •High costs. • rattling small cameras and projectors CHAPTER 5 : MUTUAL TELEXISTENCE: Chaitanya Institute of Engineering & Technology Page 9 OPTICAL CAMOUFLAGE CHAPTER 5. 1 :How mutual telexis tence works: Chaitanya Institute of Engineering & Technology Page 10 OPTICAL CAMOUFLAGE • valet de chambre user A is at one post while his telexistence robot A is at another location with human user B. • Human user B is at one location while his telexistence robot B is at another location with human user A. • Both telexistence robots are covered in retro-reflective material so that they act like screens. With video cameras and projectors at each location, the images of the two human users are projected onto their respective robots in the remote locations. • This gives each human the perception that he is working with another human instead of a robot. • Right now, mutual telexistence is science fiction, but it wont be for long as scientists continue to push the boundaries of the technology. CHAPTER 6 : REAL WORLD APPLICATIONS: Chaitanya Institute of Engineering & Technology Page 11 OPTICAL CAMOUFLAGE • Doctors acting surgery could use optical camouflage to see through their hands and instruments to the underlying tissue. Providing a view of the outside in windowless rooms is one of the more fanciful applications of the technology, but one that might rectify the psychological well-being of people in much(prenominal) environments. • Pilots come 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. • Drivers backing up cars could benefit one day from optical camouflage. A quick glance backward through a transparent rear hatch or tailgate would make it easy to know when to stop.CHAPTER 7 : OPTICAL CAMOUFLAGE SEEN IN: ? Ghost in the Shell. ? 2000 video halt Deus Ex. Chaitanya Institute of Engineering & Technology Page 12 OPTICAL CAMOUFLAGE ? 2002 James seize movie Die Another Day ? admixture Gear Solid and Halo video game series. ? The video game Phantom Crash. ? The Predator movie. CHAPTER 8 : ADVANTAGES & DISADVANTAGES ADVANTAGES: Chaitanya Institute of Engineering & Technology Page 13 OPTICAL CAMOUFLAGE ? Optical Camouflage can be used on surgical globes or equipments so they don’t block sawbones’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. CHAPTER 9 : CONCLUSION: Now all of us take for had a small tour of the fire world of optical camouflage. A lot of interesting thing have been done and already we have seen that anyone can be almost invisible Chaitanya Institute of Engineering & Technology Page 14 OPTICAL CAMOUFLAGE ith this technology. Though we are still veneer challenges with practicality, licensing and high costs the future promises us a lot more. To make an object literally vaporise before a persons eyes, a cloak would have to simultaneously interact with all of the wavelengths, or colours, that make up light. That technology would require much more intricate and tiny meta-material structures, which scientists have yet to devise. seek work is going on and soon we will have even more astonishing results. 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