To taub Metadata: Cov Lus Qhia Hauv Cov Ntawv Dua
Lo lus nug: Metadata yog dab tsi?
Txog EXIF, IPTC thiab XMP Metadata Siv Graphics Software
Teb: Metadata yog ib lub sij hawm rau cov lus piav qhia hauv cov duab lossis lwm hom ntaub ntawv. Metadata yog qhov tseem ceeb ntawm qhov muaj hnub nyoog ntawm cov duab uas cov neeg siv tab tom nrhiav ib txoj kev los khaws cov ntaub ntawv nrog lawv cov duab uas yog xa khoom thiab cov chaw nyob nrog cov ntaub ntawv, ob qho tib si tam sim no thiab rau yav tom ntej.
Ib hom metadata yog cov ntaub ntawv ntxiv uas yuav luag txhua lub koob yees duab digital nrog koj cov duab. Lub metadata yuav los ntawm koj lub koob yees duab yog hu ua cov ntaub ntawv EXIF, uas yog sawv cev rau Cov Ntaub Ntawv Dauv Luam Dua. Feem ntau cov software muaj peev xwm tso saib cov ntaub ntawv rau tus neeg siv, tiam sis nws tsis yog qhov tsim nyog.
- Txhua Yam Txog Cov Ntaub Ntawv Txog Cov Khoom Siv hauv Cov Ntawv Duab
Txawm li cas los xij, muaj ntau hom metadata uas tso cai rau cov neeg siv los ntxiv rau lawv cov ntaub ntawv ntxig rau hauv cov yees duab lossis cov ntaub ntawv duab. Cov ntawv xov xwm no muaj xws li cov duab ntawm daim duab, cov ntaub ntawv xov xwm, cov ntawv sau, cov qhab nia, cov ntsiab lus, cov hnub tsim thiab qhov chaw, cov ntaub ntawv qhia, lossis cov lus qhia tshwj xeeb. Ob ntawm feem ntau siv cov qauv txheej txheem rau cov duab cov duab yog IPTC thiab XMP.
- IPTC yog tus txheej txheem tsim hauv xyoo 1970 los ntawm International Press Telecommunications Council. Nws tau pib tsim ua ib qho qauv rau kev sib pauv ntawm cov ntaub ntawv cov koom haum thiab tau hloov zuj zus mus raws sijhawm. Nyob rau hauv 1994, Adobe Photoshop's "Cov Ntaub Ntawv Qhia Txog Tswv Yim" tau siv cov neeg siv los ntxig thiab hloov IPTC metadata hauv cov duab cov ntaub ntawv thiab yog li nws tau txais los ntawm cov koom haum ua lag luam thiab lwm cov lag luam luam tawm lwm qhov xov xwm.
- XMP yog lub tshiab XML-raws li "Metadata Platform Extensible" tsim los ntawm Adobe hauv xyoo 2001. Adobe tau ua haujlwm nrog IPTC los teeb tsa cov "IPTC headers" rau hauv XMP tshiab thiab hauv 2005 "IPTC Core Schema for XMP" specification tawm . XMP yog qhib qhov chaw, pej xeem txuj, ua kom yooj yim rau cov neeg tsim khoom los txais yuav tus specification hauv qhov kev pab cuam thib peb. XMP metadata yuav ntxiv rau ntau hom ntaub ntawv , tiam sis kev nraaj duab, nws yog feem ntau muab cia rau hauv cov ntaub ntawv JPEG thiab TIFF .
Ntau ntawm hnub no tus yees duab-editing thiab duab tswj software muaj peev xwm rau kev txhim kho thiab tsim kho cov ntaub ntawv hauv cov duab cov ntaub ntawv, thiab tseem muaj ntau cov kev pab tshwj xeeb rau kev ua hauj lwm nrog txhua hom metadata nrog rau EXIF, IPTC, thiab XMP. Qee cov laus software tsis txhawb cov ntaub ntawv xov xwm, thiab koj yuav poob cov ntaub ntawv no yog tias koj hloov thiab txuag koj cov ntaub ntawv nrog kos npe nkag hauv ib qho kev pab cuam uas tsis txhawb nws.
Ua ntej rau cov qauv txheej txheem, txhua qhov duab tswj cov cuab yeej muaj nws txoj kev khaws cia cov ntaub ntawv, uas txhais tau tias cov ntaub ntawv tsis muaj nyob sab nraud ntawm software - yog tias koj xa ib daim duab rau lwm tus, cov lus qhia tsis tau nrog nws . Metadata tso cai rau cov ntaub ntawv no xa mus rau hauv cov ntaub ntawv, ib txoj kev uas yuav nkag siab los ntawm lwm qhov software, kho vajtse, thiab cov neeg kawg. Nws tuaj yeem raug xa tawm ntawm cov ntaub ntawv tawm tswv yim.
Diam duab sib koom thiab Metadata kev ntshai
Tsis ntev los no, nrog rau kev sib koom yees duab sib koom ntawm kev tes hauj lwm zoo li Facebook, muaj ib txhia ntshai thiab kev txhawj xeeb txog tus kheej cov ntaub ntawv xws li qhov chaw nyob hauv embedded hauv lub metadata cov duab uas tau koom hauv online. Cov kev ntshai no feem ntau tsis muaj qhov tseeb, txawm li cas los xij, vim tias tag nrho cov kev sib raug zoo sib txuas ntawm cov xov xwm tshaj tawm nrog qhov chaw cov ntaub ntawv lossis cov chaw hauv GPS.
Cov lus nug? Comments? Xa mus rau lub Rooj Sab Laj!
Rov qab mus rau cov Lus Txhais Lus