3D tsom iav, tseem hu ua "stereoscopic tsom iav," yog tsom iav tshwj xeeb uas tuaj yeem siv los saib 3D duab lossis duab.Stereoscopic tsom iav tau muab faib ua ntau hom xim, ntau dua yog liab xiav thiab liab xiav.
Lub tswv yim yog tso cai rau ob lub qhov muag pom tsuas yog ib qho ntawm ob daim duab ntawm 3D duab, siv qhov kev pom ntawm lub teeb hauv cov xim sib xws thiab sib txawv.3D cov yeeb yaj kiab tau dhau los ua nrov ntawm cov neeg tuaj saib.Tam sim no, muaj peb hom 3D tsom iav ntawm kev ua lag luam: chromatic aberration, polarizing thiab lub sij hawm feem.Lub hauv paus ntsiab lus yog tias ob lub qhov muag tau txais cov duab sib txawv, thiab lub hlwb yuav muab cov ntaub ntawv los ntawm ob sab los tsim cov nyhuv peb sab.
Lub physics ntawm 3D tsom iav
Lub teeb yoj yog electromagnetic yoj, electromagnetic yoj yog shear yoj, shear yoj kev co kev taw qhia thiab propagation kev taw qhia yog perpendicular.Rau lub teeb ntuj propagating nyob rau hauv ib tug tej yam kev taw qhia, nws kev co kev taw qhia yog pom nyob rau hauv tag nrho cov lus qhia nyob rau hauv lub dav hlau perpendicular mus rau propagation kev taw qhia.Yog hais tias, thaum lub vibration nrog ib qho kev taw qhia tsuas yog hu ua linear polarized nyob rau lub caij no, txoj kev ntau ntawm linear polarized, polarizing zaj duab xis yog txoj kev yooj yim tshaj plaws, nyob rau hauv nruab nrab ntawm lub lens polarized zaj duab xis muaj ntau cov pob zeb me me, sib npaug ntawm ib qho kev txiav txim, kom koj tuaj yeem tso lub teeb ntuj los ua polarized rau hauv peb lub qhov muag.Xws li:
Lub hauv paus ntsiab lus ntawm polarized 3D tsom iav yog qhov muag sab laug thiab lub qhov muag sab xis ntawm lub tsom iav yog feem ntau nruab nrog ib qho transverse polarizer thiab ib tug longitudinal polarizer.Nyob rau hauv txoj kev no, thaum cov yeeb yaj kiab ua los ntawm kev siv lub tshuab hluav taws xob polarized, cov duab ntawm lub lens sab laug yog lim los ntawm transverse polarizer kom tau transverse polarized lub teeb, thiab cov duab ntawm txoj cai lo ntsiab muag yog lim los ntawm longitudinal polarizer kom tau longitudinal polarized lub teeb.
Siv cov cuab yeej ntawm lub teeb polarized yog raws nraim li cas stereoscopic xinesmas xav tau - ua rau sab xis thiab sab laug ob lub qhov muag saib txawv kiag li.Los ntawm equiping ob lub projectors nrog polarizers, lub projectors project zoo kawg nkaus polarized lub teeb tsis perpendicular rau ib leeg, thiab tom qab ntawd tus neeg saib tuaj yeem pom sab xis thiab sab laug ob lub qhov muag ntawm ib leeg yam tsis muaj kev cuam tshuam los ntawm cov tsom iav tshwj xeeb polarized.
Yav dhau los, polarized 3D tsom iav tsuas yog coated nrog ib txheej polarizing ntawm qhov chaw ntawm cov tsom iav zoo tib yam los ua cov zaj duab xis polarizing, uas yog pheej yig heev.Tab sis txoj kev no muaj qhov tsis xws luag, thaum saib cov yeeb yaj kiab kom zaum ncaj, tsis tuaj yeem tig lub taub hau, txwv tsis pub nws yuav yog ob npaug.Tam sim no, thaum saib cov yeeb yaj kiab 3D, cov lo ntsiab muag polarizing hnav los ntawm cov neeg tuaj saib yog lub voj voog polarizers, uas yog, ib qho yog sab laug polarized thiab lwm qhov yog polarized txoj cai, uas tuaj yeem ua rau cov neeg tuaj saib sab laug thiab sab xis pom cov duab sib txawv, thiab txawm tias yuav qaij lub taub hau li cas, yuav tsis muaj ob lub qhov muag pom.
Kev faib tawm kom meej
Xim txawv hom yog qhov pheej yig tshaj los saib cov yeeb yaj kiab.Cov cuab yeej playback yuav tso saib cov duab sab laug thiab sab xis hauv cov xim sib txawv (liab thiab xiav yog ib txwm muaj).Nrog tsom iav, sab laug qhov muag tsuas pom daim duab A xim (xws li lub teeb liab) thiab lub qhov muag sab xis tsuas tuaj yeem pom daim duab B xim (xws li lub teeb xiav), kom paub txog peb qhov kev nthuav qhia ntawm daim duab ntawm sab laug thiab sab xis.Tab sis thaum cov xim nyob ze ntawm lub lim liab tsis tiav lossis lub lim xiav tsis tiav, yuav muaj ob chav duab ntxoov ntxoo, nws yog qhov nyuaj kom muaj cov nyhuv zoo meej.Ntev tom qab ob lub qhov muag tseem yuav ua rau lub sijhawm luv luv ntawm kev ntxub ntxaug xim los ntawm kev cuam tshuam.
Lub shutter hom yog ua tiav los ntawm kev hloov ntawm sab laug thiab sab xis qhov muag thav duab kom ua tiav 3D nyhuv.Tsis zoo li polarizing, shutter hom yog ib qho kev siv tshuab 3D.Lub shutter 3D player yuav nquag hloov ntawm lub qhov muag sab laug thiab qhov muag sab xis.Ntawd yog, tib lub sijhawm, daim duab 3D polarized muaj ob sab laug thiab sab xis duab tib lub sijhawm, tab sis hom kaw tsuas yog cov duab sab laug lossis sab xis xwb, thiab 3D iav hloov qhov muag sab laug thiab sab xis tib lub sijhawm.Thaum lub vijtsam pom lub qhov muag sab laug, cov iav qhib qhov muag sab laug thiab kaw qhov muag sab xis;Thaum lub vijtsam pom lub qhov muag sab xis, cov iav qhib qhov muag sab xis thiab kaw qhov muag sab laug.Vim tias qhov hloov pauv ceev luv dua li lub sijhawm ib ntus ntawm tib neeg lub zeem muag, nws tsis tuaj yeem hnov qhov flicker ntawm daim duab thaum saib zaj duab xis.Tab sis cov thev naus laus zis tswj hwm qhov kev daws teeb meem qub ntawm cov duab, ua rau nws yooj yim rau cov neeg siv kom txaus siab rau qhov tseeb tag nrho HD 3D yam tsis muaj degrading qhov ci ntawm daim duab.
Post lub sij hawm: Aug-19-2022