Lub qhov lojlub lens qhov muag ntsesNws muaj cov yam ntxwv ntawm qhov loj aperture thiab lub kaum sab xis ultra-wide, uas tuaj yeem ntes tau cov xwm txheej dav heev. Nws muaj cov txiaj ntsig tshwj xeeb thiab cov ntawv thov muaj tswv yim hauv kev thaij duab sab hauv tsev thiab tuaj yeem coj kev cuam tshuam pom tseeb rau daim duab.
1.Cov xwm txheej siv ntawm lub lens loj aperture fisheye hauv kev thaij duab sab hauv tsev
Cov iav fisheye loj uas muaj qhov loj me yog qhov tsim nyog rau cov chaw nyob hauv tsev uas muaj qhov chaw tsawg. Lawv cov yam ntxwv ntawm lub kaum sab xis dav dav thiab qhov loj me tuaj yeem txhim kho lub peev xwm thaij duab hauv qhov chaw tsaus ntuj thiab muaj cov kev siv tshwj xeeb hauv kev thaij duab hauv tsev. Tom ntej no, cia peb saib cov xwm txheej siv dav dav ntawm cov iav fisheye loj hauv kev thaij duab hauv tsev.
A.Kev tsim vaj tsev thiabskev nrawmpkev thaij duab kub
Cov iav fisheye uas muaj qhov loj feem ntau muaj lub kaum sab xis saib dav dua 180°, uas tuaj yeem thaij tau ib qho chaw dav hauv qhov chaw me me, thiab ua kom daim duab zoo nkauj dua los ntawm kev cuam tshuam kev cuam tshuam loj heev. Qhov no yog qhov tsim nyog rau kev thaij duab xws li cov qauv tsev sab hauv tsev, cov qauv chaw sab hauv tsev, thiab cov ntsiab lus kho kom zoo nkauj.
Piv txwv li, thaum thaij duab hauv tsev txoj kev hauv tsev lossis chav, cov iav fisheye tuaj yeem ncab cov npoo thiab sib sau ua ke rau hauv nruab nrab, tsim kom muaj qhov pom kev dav dua, ua rau daim duab zoo li qhib dua thiab muaj peb sab.
B.Kev thaij duab panoramic sab hauv tsev
Lub kaum sab xis saib dav heev ntawm lub qhov lojlub lens qhov muag ntseszoo heev rau kev thaij duab panoramic sab hauv tsev, tshwj xeeb tshaj yog thaum koj xav tau thaij duab sab hauv ntawm tag nrho chav lossis lub tsev.
Piv txwv li, lub lens fisheye tuaj yeem npog tag nrho ib chav ib zaug, thiab koj tuaj yeem pom tag nrho yam tsis tas txav lub koob yees duab. Lub luag haujlwm no kuj tau siv dav hauv VR panoramic photography, smart homes, thiab robot navigation.
Daim ntawv thov ntawm lub lens loj aperture fisheye hauv kev thaij duab panoramic sab hauv tsev
C.Kev ua tau zoo ntawm kev thaij duab hauv qhov chaw tsaus ntuj
Feem ntau cov iav fisheye uas muaj qhov loj me muaj tus nqi f-stop loj, uas ua rau lawv tswj tau qhov zoo ntawm cov duab hauv qhov tsaus ntuj, uas yog qhov tseem ceeb heev rau kev thaij duab hauv tsev. Qhov no zoo heev rau cov xwm txheej tsaus ntuj hauv tsev, xws li chav nyob tsaus ntuj, sab hauv tsev noj mov thaum hmo ntuj, lossis txoj kev hauv tsev uas muaj teeb pom kev zoo. Tsis tas li ntawd xwb, qhov tsim qhov loj ntawm cov iav fisheye kuj pab txhim kho qhov ci thiab qhov meej ntawm cov duab.
D.Kev thaij duab txog kev tshwm sim thiab cov ntaub ntawv
Cov tsom iav fisheye loj kuj tseem siv tau rau hauv kev thaij duab xwm txheej thiab cov ntaub ntawv. Lawv tsim nyog rau kev thaij duab pab pawg lossis cov xwm txheej uas xav tau cov ntaub ntawv ib puag ncig tiav (xws li kev teeb tsa chav noj mov). Cov tsom iav fisheye loj siv rau hauv kev sib yuav, kev lom zem, kev hais kwv txhiaj thiab lwm yam xwm txheej.
Lawv lub qhov loj loj tuaj yeem ua kom lub shutter ceev hauv qhov kaj tsawg, thiabqhov muag ntsesLub zeem muag tuaj yeem ntes tau huab cua thiab kev sib cuag ntawm tib neeg tib lub sijhawm. Piv txwv li, thaum thaij duab cov xwm txheej hauv tsev, lub zeem muag fisheye + kev thaij duab ceev ceev tuaj yeem khov lub sijhawm pov paj thiab ribbons, ua kom muaj kev xav zoo ntawm daim duab.
Cov iav qhov muag loj loj feem ntau siv rau hauv kev thaij duab xwm txheej thiab cov ntaub ntawv sau cia
E.Kev lag luam thiabpkhoompkev thaij duab kub
Cov iav fisheye loj kuj siv tau rau kev thaij duab sab hauv tsev thiab kev thaij duab khoom. Cov iav fisheye muaj qhov cuam tshuam tsis zoo uas ua rau pom kev zoo nkauj thiab ua rau cov duab tsis zoo nkauj, ua rau cov duab sab hauv tsev muaj qhov cuam tshuam pom kev zoo nkauj. Qhov cuam tshuam no siv tau los qhia txog qee yam hauv daim duab lossis tsim kom pom kev zoo nkauj.
Piv txwv li, fisheye distortion siv tau los qhia qhov ntim ntawm cov khoom (xws li cov khoom siv hluav taws xob me me, cov hniav nyiaj hniav kub), lossis los sib xyaw ua ke ib puag ncig los qhia kev siv cov xwm txheej ntawm cov khoom.
F.Kev thaij duab kos duab
Qhov cuam tshuam ntawm lub lens fisheye loj tuaj yeem coj cov teebmeem pom kev zoo nkauj thiab tshwj xeeb rau cov duab hauv tsev, txhaj tshuaj ntau dua kev kos duab thiab kev muaj tswv yim rau hauv kev thaij duab hauv tsev, tsim kom muaj kev cuam tshuam zoo rau qhov muag.
Piv txwv li, los ntawm kev siv lub barrel distortion ntawm lub lens fisheye, koj tuaj yeem ncab cov ceg lossis keeb kwm yav dhau thaum thaij duab kom tsim tau qhov kev xav surreal; nyob rau hauv av du lossis daim iav ib puag ncig, lub lens fisheye tuaj yeem ntes cov duab tshwj xeeb los txhim kho qhov kev txaus siab ntawm daim duab.
Hauv ntej, lub kaum sab xis ultra-wide thiab cov nyhuv distortion tshwj xeeb ntawm lub qhov lojlub lens qhov muag ntsesua rau nws tuaj yeem ntes cov ntsiab lus thiab huab cua ntawm cov chaw sab hauv tsev uas nyuaj rau qhia nrog cov iav tsom iav ib txwm muaj. Txawm hais tias nws yog kev thaij duab panoramic lossis kev tsim kos duab, lub lens fisheye tuaj yeem muab cov teebmeem pom zoo kawg nkaus.
Cov kev siv tshwj xeeb ntawm cov iav qhov muag loj loj
2.Cov kev ceev faj rau kev siv cov iav qhov muag dav dav
Txawm hais tias cov tsom iav fisheye muaj ntau yam kev muaj tswv yim, lawv cov teebmeem distortion kuj tuaj yeem ua rau muaj qee yam kev cov nyom. Yog li ntawd, cov kws thaij duab yuav tsum paub txog qee yam kev txawj thiab kev ceev faj thaum siv cov tsom iav fisheye:
Ua tib zoo saib xyuas kev tswj hwm kev cuam tshuam: Qhov kev cuam tshuam ntawm cov iav fisheye yog qhov pom tseeb tshaj plaws ntawm ntug ntawm daim duab. Tus kws thaij duab yuav tsum kho qhov kev teeb tsa ua ntej thaij duab, xyuas kom meej tias tus neeg raug tso rau hauv nruab nrab ntawm daim duab, tsis txhob muab cov ntsiab lus tseem ceeb ze dhau rau ntug ntawm daim duab, thiab tsis txhob muab cov ntaub ntawv ntug cuam tshuam rau qhov tsom mus rau.
Tsis txhob ncab ntau dhauThaum thaij duab neeg, lub ntsej muag ntawm tus neeg nyob ze rau lub lens yuav ua rau muaj kev hloov pauv loj heev, yog li koj yuav tsum siv nws nrog kev ceev faj. Rau kev thaij duab neeg, lub lens fisheye loj dua yog qhov tsim nyog dua rau kev thaij duab tag nrho lub cev lossis ib puag ncig.
Ua tib zoo saib qhov tob ntawm daim teb thiab kev xaiv qhov tsom mus rauTxawm hais tias lub qhov (aperture) loj tuaj yeem ua rau keeb kwm yav dhau tsis meej, qhov ntev ntawm lub lens fisheye luv heev thiab qhov tob ntawm daim teb tiag tiag dav, uas yuav tsum tau tsom mus rau qhov tseem ceeb (xws li lub qhov muag ntawm daim duab).
Ua tib zoo mloog cov lus qhia rau cov chaw uas muaj teeb pom kev tsawgKoj siv tau lub qhov (aperture) loj kom lub shutter speed nce, tiam sis koj yuav tsum tau xyuam xim rau qhov ISO nrov siab. Yog tias tsim nyog, koj siv tau lub tripod los yog ua kom lub ambient brightness nce (xws li siv lub teeb ci).
Kev siv lub lens loj aperture fisheye hauv qhov chaw tsis muaj teeb pom kev zoo
Hauv kev xaus, qhov qhib lojcov iav qhov muag ntsestuaj yeem daws qhov teeb meem ntawm qhov chaw txwv thiab tsim cov teebmeem zoo nkauj hauv kev thaij duab hauv tsev. Lawv tshwj xeeb tshaj yog tsim rau cov xwm txheej uas xav tau kev pom dav dav, kev kaw suab lossis kev qhia tawm kos duab. Nws yuav tsum nco ntsoov tias kev cuam tshuam thiab kev siv tau yuav tsum tau ntsuas ua ntej siv. Fisheye lenses yog qhov tsim nyog dua rau cov khoom tsim uas nrhiav cov teebmeem pom tshwj xeeb, tab sis tsis yog rau kev kaw suab tiag tiag.
Cov Lus Xaus:
ChuangAn tau ua tiav kev tsim qauv thiab tsim cov iav fisheye, uas siv dav hauv ntau qhov chaw. Yog tias koj xav tau lossis xav tau cov iav fisheye, thov hu rau peb sai li sai tau.
Lub sijhawm tshaj tawm: Lub Xya Hli-15-2025
