ARYA INSTITUTE OF ENGINEERING & TECHNOLOGY
Synopsis
on
“Optical Camouflage”
Name:- Arun Kumar Soni
Email_id:-
Roll_no:-07EAICS014
Opticalcamouflageisakindofactivecamouflagewhichcompletely envelopes the wearer.Itdisplaysanimage of the scene onthe side opposite the viewer onit,sothat theviewercan"seethrough" thewearer,rendering thewearerinvisible.Theideais relatively straightforward:tocreatetheillusionofinvisibility bycoveringanobjectwith somethingthatprojectsthescenedirectly behindthatobject.Ifyouprojectbackground image ontothe maskedobject,youcanobserve the maskedobjectjustasif itwere virtuallytransparent.
Opticalcamouflage canbe appliedfor a realscene.Inthe case of a realscene,a photographofthesceneistakenfromtheoperator’sviewpoint,andthis photographis projectedtoexactlythesameplaceastheoriginal.Actually,applyingHMP-basedoptical camouflagetoa real scene requires image-based renderingtechniques.
Whilenew high-performance, light-transmittingmaterialssuchas aerogelandlight-transmittingconcrete compelus toquestionthe nature of solidity,anewtechnology developedbyUniversity ofTokyoseekstomake matter disappear altogether.
ScientistsatTachiLaboratory havedevelopedOpticalCamouflage, whichutilizesacollectionof devicesworkinginconcerttorenderasubject invisible.AlthoughmoreencumberingandcomplicatedthanHarry Potter’s invisibilitycloak,thissystem hasessentially thesamegoal,rendering invisibilitybyslipping beneaththe shining,silverycloth.
OpticalCamouflage requiresthe use of clothing–inthiscase,a hoodedjacket–madewitharetro-reflectivematerial,whichiscomprised bythousandsofsmallbeadsthatreflectlightpreciselyaccordingtothe angle of incidence.Adigital videocameraplacedbehind thepersonwearing thecloakcapturesthescenethattheindividualwouldotherwiseobstruct, andsendsdatatoacomputerfor processing.A sophisticatedprogram calculatestheappropriate distanceandviewingangle,andthentransmits sceneviaprojectorusingacombiner,orahalfsilveredmirrorwithan opticalhole,whichallowsawitnesstoperceivearealistic mergerofthe projected scenewith the background– thusrenderingthecloak-wearer invisible.
Presentation