Optical Character Recognition (OCR) yog hais txog software uas tsim cov qauv digital ntawm cov ntawv luam tawm, ntaus ntawv, lossis sau ntawv uas cov khoos phis tawj nyeem tau yam tsis tas yuav tsum ntaus ntawv lossis sau cov ntawv. OCR feem ntau yog siv rau ntawm cov ntaub ntawv scanned hauv PDF hom, tab sis kuj tseem tuaj yeem tsim lub khoos phis tawj nyeem tau ntawm cov ntawv hauv ib daim duab.
OCR yog dab tsi
OCR, tseem hu ua kev lees paub ntawv, yog software thev naus laus zis uas hloov cov cim xws li cov lej, cov tsiaj ntawv, thiab cov cim cim (tseem hu ua glyphs) los ntawm cov ntawv luam lossis cov ntawv sau rau hauv daim ntawv hluav taws xob yooj yim dua lees paub thiab nyeem los ntawm khoos phis tawj thiab lwm cov kev pab cuam software. Qee qhov kev pabcuam OCR ua qhov no vim tias cov ntaub ntawv raug luam lossis thaij duab nrog lub koob yees duab digital thiab lwm tus tuaj yeem siv cov txheej txheem no rau cov ntaub ntawv uas tau luam tawm yav dhau los lossis thaij duab yam tsis muaj OCR. OCR tso cai rau cov neeg siv tshawb nrhiav hauv cov ntaub ntawv PDF, kho cov ntawv nyeem, thiab rov ua cov ntaub ntawv.
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OCR siv rau dab tsi?
Rau qhov xav tau ceev, txhua hnub scanning, OCR yuav tsis yog qhov loj. Yog tias koj ua ntau qhov scanning, muaj peev xwm tshawb hauv PDFs kom pom qhov tseeb uas koj xav tau tuaj yeem txuag tau sijhawm me ntsis thiab ua rau OCR ua haujlwm hauv koj qhov program scanner tseem ceeb dua. Nov yog qee yam OCR pab nrog:
- Kev ua cov ntaub ntawv tsis siv neeg thiab cov ntaub ntawv nkag (piv txwv: Cov neeg thov ua haujlwm nrhiav haujlwm rau kev rov pib dua).
- Tau cov ntawv scanned nrhiav tau.
- Hloov cov ntawv sau ntawv rau hauv lub computer nyeem tau.
- Ua cov ntaub ntawv siv tau ntau dua los ntawm cov kev nyeem nyeem uas pab cov neeg siv tsis pom kev.
- Khaws cov ntaub ntawv keeb kwm thiab ntawv xov xwm, thaum tseem ua rau lawv tshawb nrhiav.
- Cov ntaub ntawv rho tawm thiab hloov mus rau cov kev pabcuam nyiaj txiag (Piv txwv: Cov ntawv txais nyiaj thiab cov ntawv xa nyiaj).
- Indexing cov ntaub ntawv siv los ntawm kev tshawb fawb xyaw.
- Kev lees paub ntawm daim ntawv tsav tsheb los ntawm lub koob yees duab nrawm thiab lub teeb liab lub koob yees duab software.
- Speech synthesizers rau cov neeg uas tsis tuaj yeem hais lus - theoretical physicist, Stephen Hawking, yog kab tias cov neeg siv paub zoo tshaj plaws ntawm kev hais lus synthesizer.
kab hauv qab
Vim li cas thiaj tsis thaij duab xwb, puas yog? Vim tias koj yuav tsis tuaj yeem hloov kho dab tsi lossis tshawb nrhiav cov ntawv vim nws tsuas yog duab xwb. Luam theej duab cov ntaub ntawv thiab khiav OCR software tuaj yeem hloov cov ntaub ntawv mus rau hauv ib yam dab tsi koj tuaj yeem hloov kho thiab tuaj yeem tshawb nrhiav.
History of OCR
Thaum qhov ntxov tshaj plaws ntawm kev siv cov ntawv nyeem hnub tim rau xyoo 1914, kev nthuav dav dav thiab kev siv cov thev naus laus zis ntsig txog OCR tau pib mob siab rau xyoo 1950, tshwj xeeb nrog kev tsim cov ntawv yooj yim heev uas yooj yim hloov mus rau digitally- nyeem tau ntawv. Thawj qhov yooj yim fonts no yog tsim los ntawm David Shepard thiab feem ntau hu ua OCR-7B. OCR-7B tseem siv niaj hnub no hauv kev lag luam nyiaj txiag rau tus qauv font siv ntawm credit cards thiab debit cards. Nyob rau xyoo 1960, cov kev pabcuam xa ntawv hauv ntau lub tebchaws tau pib siv OCR thev naus laus zis txhawm rau txhawm rau txhawm rau txhawm rau xa ntawv sai, suav nrog Tebchaws Meskas, Tebchaws Askiv, Canada, thiab Lub Tebchaws Yelemees. OCR tseem yog cov thev naus laus zis tseem ceeb siv los txheeb xyuas cov ntawv xa mus thoob ntiaj teb. Xyoo 2000, kev paub tseem ceeb ntawm kev txwv thiab kev muaj peev xwm ntawm OCR thev naus laus zis tau siv los tsim cov CAPTCHA cov kev pab cuam siv los nres bots thiab spammers.
Ntau xyoo dhau los, OCR tau loj hlob ntau dua thiab muaj txiaj ntsig ntau dua vim tias muaj kev nce qib hauv cov cuab yeej technology xws li kev txawj ntse, kev kawm tshuab, thiab kev pom hauv computer. Niaj hnub no, OCR software siv cov qauv kev paub, kev tshawb nrhiav pom, thiab kev tshawb nrhiav cov ntawv los hloov cov ntaub ntawv sai dua thiab raug dua li yav dhau los.
FAQ
Kuv yuav tshuaj xyuas cov ntaub ntawv nrog kuv lub xov tooj lossis ntsiav tshuaj li cas?
Ntawm iOS, qhib Notes app thiab tsim daim ntawv tshiab. Qhib lub koob yees duab, thiab tom qab ntawd coj mus rhaub Scan Documents. Hauv Android, qhib Google Drive thiab xaiv Plus (+), ces coj mus rhaub Scan txhawm rau luam theej duab. ntaub ntawv nrog koj lub xov tooj.
Kuv yuav siv OCR hauv Adobe Acrobat li cas?
Qhib cov ntaub ntawv PDF uas muaj cov duab scanned, tom qab ntawd xaiv Tools > Edit PDF. Acrobat yuav cia li siv OCR kom koj tuaj yeem hloov kho cov ntawv. Tsuas yog xaiv qhov chaw koj xav hloov kho thiab pib ntaus ntawv.
Qhov txawv ntawm OCR thiab OMR yog dab tsi?
Optical Mark Recognition (OMR) yog software uas kuaj pom cov cim ntawm daim ntawv, feem ntau yog daim ntawv npuas. OMR yog siv los ua cov txiaj ntsig ntawm kev xeem, kev soj ntsuam, daim ntawv nug, thiab txawm tias kev xaiv tsa. Tsis zoo li OCR, OMR tsis tuaj yeem txiav txim siab cov cim ntawm nplooj ntawv, tab sis tsuas yog txheeb xyuas tias cov cim nyob ntawd.
