TVs thiab video projectors muab ntau qhov chaw uas pab kom tau txais cov duab zoo tshaj plaws raws li TV lub peev xwm lossis raws li koj nyiam. Ntawm cov kev teeb tsa no yog kev tswj xyuas qhov ntse thiab kev daws teeb meem, uas tsis zoo ib yam. Mus nyeem ntawv kom paub txog TV sharpness thiab daws teeb meem thiab yuav ua li cas cov no cuam tshuam rau TV duab zoo.
Cov ntaub ntawv no siv tau rau TVs los ntawm ntau lub tuam txhab, suav nrog, tab sis tsis txwv rau, LG, Samsung, Panasonic, Sony, thiab Vizio, nrog rau cov yeeb yaj kiab video tsim los ntawm cov tuam txhab xws li Benq, Epson, thiab Optoma.
Sharpness vs. Resolution
Qhov kev nkag siab zoo ntawm kev ua kom pom tseeb (raws li siv hauv daim ntawv thov video) yog qhov ncaj qha ntsig txog kev daws teeb meem thiab qhov kev ua kom pom tseeb nce qhov kev daws teeb meem ntawm cov duab. Txawm li cas los xij, qhov ntawd tsis yog li ntawd.
Qhov kev daws teeb meem yog hais txog tus lej ntawm pixels (720p, 1080p, 4K, thiab 8K). Qhov kev daws teeb meem ntawm qhov chaw txuas nrog lub TV yuav qis dua, tab sis TV (lossis projector) nce cov duab kom cov duab tso tawm siv tus lej faib pixels ntawm lub TV screen.
Ntawm qhov tod tes, kev ntse yog kev tswj hwm uas ua rau qhov sib txawv ntawm ntug kom cov khoom sib txawv. Cov duab daws teeb meem tseem zoo ib yam. Txawm hais tias qhov teeb tsa sharpness ua rau cov duab zoo nkaus li muaj kev nthuav dav ntxiv, nws yeej tsis yog.
Cov txiaj ntsig ntawm Kev Siv Lub Ntsej Muag Tswj
Cov no yog ob peb txoj hauv kev uas ntse ua rau koj saib TV zoo dua:
- Yog tias ib daim duab zoo li mos, siv qhov kev tswj kom ntse hauv cov kauj ruam me kom ua kom cov khoom sib txawv dua.
- Nrog cov duab daws teeb meem qis dua uas tau nce qib, siv qhov me me ntawm qhov ntse.
- Ntxhais cov npoo ntawm daim duab yuav ua rau cov khoom zoo sib xws ntawm lub TV siab dua.
Daim duab ntawm sab laug qhia tau hais tias ib txwm ua kom pom tseeb. Daim duab ntawm sab xis muaj qhov teeb tsa sharpness nce me ntsis.
Pitfalls ntawm Kev Siv Lub Ntsej Muag Tswj
Image sharpness yuav tsis tsim cov nyhuv xav tau. Piv txwv li:
- Yog tias qhov ntse raug thawb dhau deb, halos thiab cov npoo ntxhib yuav tshwm nyob ib puag ncig cov khoom. Yog hais tias daim duab qhov chaw tsis nrov (nws muaj zaj duab xis nplej, lub suab nrov hauv cov yeeb yaj kiab analog, lossis lub suab nrov hauv TV), cov teebmeem no yuav ua rau cov npoo ntawm cov nplej thiab suab nrov tau hais txog.
- Thaum ntxiv qhov ntse heev, cov khoom zoo li muaj cov npoo ntxhib, muab cov duab tag nrho saib hnyav.
- Qhov hnyav cuam tshuam rau lwm yam ntawm cov duab, xws li qhov sib txawv, qhov ci, thiab xim. Qhov no ua rau muaj kev pom dhau los ntawm lub ntsej muag. Tsis tas li ntawd, qhov kev ntxhib los mos ntawm cov khoom tom qab, txawm tias saib 3D-ish, ua rau muaj kev cuam tshuam ntau dua. Koj tuaj yeem pom yav dhau los zais me me macro thaiv lossis teeb meem pixelation.
Nyem daim duab hauv qab no kom pom qhov sib piv sharpness loj kom qhov sib txawv pom ntau dua. Daim duab ntawm sab laug yog qhov qub, thaum daim duab ntawm sab xis yog qhov tob tob, ua rau cov npoo hnyav dua.
Lwm qhov kev xaiv xaiv Zoo ib yam li Kev Tswj Xyuas Ntsej Muag
Yog cov duab los ntawm cov chaw tshwj xeeb zoo li muag muag heev, txawm tias ntawm 1080p lossis 4K TV lossis video projector duab, siv lwm qhov kev xaiv uas muab qhov tseeb tshaj qhov kev tswj xyuas qhov ntse, xws li Nthuav (tseem hu ua Edge) Txhim kho thiab suab nrov. Kev txo qis (aka Digital Noise Reduction lossis DNR).
Daim duab teeb tsa presets sib xyaw ua ke ntau qhov ntsuas uas txiav txim siab seb cov duab yuav tsum zoo li cas ntawm TV lossis video projection screen raws li cov ntsiab lus tshwj xeeb lossis chav teeb pom kev zoo.
Cov kev tswj hwm no tsis hloov qhov kev daws teeb meem ntawm daim duab. Qhov kev daws teeb meem yog txiav txim los ntawm qhov chaw ua ke nrog cov pixels ntawm lub vijtsam TV.
Thaum ua tib zoo ua raws li cov kauj ruam me me, kev nthuav dav lossis kev txhim kho ntug tuaj yeem kho cov npoo muag. Tsis tas li ntawd, siv cov kauj ruam me me hauv qhov chaw txo suab nrov tuaj yeem txo cov teebmeem halo lossis ntxiv suab nrov, xws li zaj duab xis lossis tshaj tawm cov nplej, thiab qee qhov teebmeem hnyav uas yuav raug coj tawm los ntawm kev nthuav dav lossis kev txhim kho ntug.
Koj tseem tuaj yeem khiav mus rau qhov xwm txheej uas cov duab tso tawm yuav ua rau lub ntsej muag zoo nkauj uas tej zaum yuav tsis zoo dua li thaum koj sim qhov kev ua kom pom tseeb. Koj tuaj yeem pom tias qhov chaw yuav muaj kev txhim kho ntug uas twb tau thov (nrog rau qee qhov DVDs thiab Blu-duab tshav discs). Kev siv lub TV qhov ntse, nthuav dav (los yog kev txhim kho ntug), lossis txo cov suab nrov hauv cov xwm txheej no yuav ua rau tsis zoo.
Qee DVD, Blu-duab tshav, thiab Ultra HD Blu-duab tshav players muaj qhov ntse, nthuav dav lossis ntug, thiab txo suab nrov. Xa mus rau qhov piv txwv hauv qab no.
Ntawm no yog yam uas lwm cov duab tswj ua:
- Brightness: Ua kom qhov tsaus ntuj ci dua lossis tsaus dua.
- Contrast: Ua kom thaj chaw kaj ci dua lossis tsaus dua.
- Color: Nce lossis txo qhov saturation (kev siv) ntawm txhua xim hauv daim duab ua ke.
- Tint (Hue): Kho cov xim ntsuab thiab magenta hauv daim duab (siv feem ntau los hu rau cov tawv nqaij zoo dua).
kab hauv qab: Siv ceev faj thaum siv Cov Kev Tswj Ntsej Muag
TVs thiab video projectors muab ob peb qhov kev xaiv los ua kom pom cov duab zoo tshaj plaws tab sis siv ceev faj thaum siv kev tswj kom ntse.
Ntxhais me ntsis ua rau daim duab zoo li mos, thaum lub ntsej muag ntau dhau ua rau daim duab hnyav.
- Kev tswj xyuas qhov ntse muab qhov kev xav tsis tseeb tias nws yuav nce lossis txhim kho qhov kev daws teeb meem ntawm TV cov duab. Txawm li cas los xij, nws tsis nce kev daws teeb meem thiab tuaj yeem ntxiv cov teebmeem tsis zoo uas ua rau cov duab zoo dua yog tias siv tsis raug.
- Khuv lub TV lossis qhov projector qhov chaw teeb tsa. Cia qhov kev teeb tsa ua ntej rau kev ua kom pom tseeb ib leeg lossis txwv kev hloov pauv rau ib lossis ob kauj ruam nce lossis nqis.
- Yog tias koj xav sim nrog qhov ntse, nthuav dav (ntug txhim kho), lossis txo suab nrov, nco ntsoov lub neej ntawd txoj haujlwm kom koj tuaj yeem rov qab mus rau qhov ntawd yog tias koj txiav txim siab koj cov kev hloov pauv tsis zoo.
- Koj tuaj yeem pom qhov chaw tshwj xeeb xav tau kev hloov kho me ntsis, tab sis lwm tus tsis ua.
- Ntawm ntau lub TV, koj tuaj yeem siv cov duab sib txawv ntawm qhov nyiam, suav nrog qhov ntse, rau txhua qhov kev tawm tswv yim. Yog li, koj tuaj yeem hloov qhov kev teeb tsa sharpness qhov twg nws yuav xav tau ntawm ib qho kev tawm tswv yim, thiab lwm qhov chaw txuas nrog lwm cov khoom siv zoo. Qhov no txhais tau tias koj tsis tas yuav rov hloov pauv rau txhua qhov chaw koj li.
