OCR technology yog dab tsi?
Optical Character Recognition (Lus Askiv: Optical Character Recognition, OCR) yog hais txog cov txheej txheem ntawm kev txheeb xyuas thiab lees paub cov duab cov ntaub ntawv ntawm cov ntawv nyeem kom tau txais cov ntawv nyeem thiab cov ntaub ntawv layout.
Zoo ib yam li kev paub txog cov duab thiab tshuab pom kev siv tshuab, cov txheej txheem ua haujlwm ntawm OCR thev naus laus zis kuj tau muab faib ua cov tswv yim, ua ntej, ua haujlwm nruab nrab, ua tiav thiab cov txheej txheem tso tawm.
nkag
Rau cov duab sib txawv, muaj ntau hom cia thiab sib txawv compression txoj kev.Tam sim no, muaj OpenCV, CxImage, thiab lwm yam.
Pre-processing - binarization
Feem ntau ntawm cov duab coj los ntawm cov koob yees duab digital niaj hnub no yog cov duab xim, uas muaj cov ntaub ntawv loj heev thiab tsis haum rau OCR thev naus laus zis.
Rau cov ntsiab lus ntawm daim duab, peb tuaj yeem faib nws mus rau hauv pem hauv ntej thiab tom qab.Txhawm rau ua kom lub khoos phis tawj nrawm dua thiab ua haujlwm zoo dua OCR cov kev suav nrog, peb yuav tsum ua cov duab xim ua ntej, kom tsuas yog cov ntaub ntawv hauv ntej thiab cov ntaub ntawv keeb kwm yav dhau nyob hauv daim duab.Binarization tuaj yeem nkag siab yooj yim li "dub thiab dawb".
duab txo suab nrov
Rau cov duab sib txawv, lub ntsiab lus ntawm lub suab nrov yuav txawv, thiab cov txheej txheem ntawm denoising raws li cov yam ntxwv ntawm lub suab nrov yog hu ua kev txo suab nrov.
qaij kho
Vim hais tias cov neeg siv zoo tib yam, thaum thaij duab ntawm cov ntaub ntawv, nws yog ib qho nyuaj rau tua tag nrho nyob rau hauv kab nrog kab rov tav thiab ntsug dlhos, yog li cov duab coj yuav inevitably yuav skewed, uas yuav tsum tau cov duab ua software los kho.
Mid-term processing – layout tsom xam
Tus txheej txheem ntawm kev faib cov duab rau hauv kab lus thiab ceg yog hu ua layout tsom xam.Vim muaj ntau haiv neeg thiab tsis yooj yim ntawm cov ntaub ntawv tiag tiag, cov kauj ruam no tseem yuav tsum tau ua kom zoo.
txiav cim
Vim muaj kev txwv ntawm kev yees duab thiab kev sau ntawv, cov cim feem ntau daig thiab cwj mem tawg.Kev siv cov duab no ncaj qha rau kev tshuaj xyuas OCR yuav txwv kev ua haujlwm OCR zoo heev.Yog li ntawd, tus cwj pwm segmentation yog xav tau, uas yog, cais cov cim sib txawv.
Cim cim
Nyob rau hauv thaum ntxov theem, template txuam yog tsuas yog siv, thiab nyob rau hauv lub tom ntej theem, feature extraction mas yog siv.Vim muaj cov yam ntxwv xws li kev hloov pauv ntawm cov ntawv nyeem, mob stroke thickness, tawg cwj mem, adhesion, kev sib hloov, thiab lwm yam, qhov nyuaj ntawm feature extraction yog heev cuam tshuam.
Layout restoration
Cov neeg cia siab tias cov ntawv lees paub tseem tab tom npaj zoo li daim duab tseem ceeb, thiab cov kab lus, txoj haujlwm, thiab kev txiav txim yog tso tawm rau Word cov ntaub ntawv, cov ntaub ntawv PDF, thiab lwm yam, thiab cov txheej txheem no hu ua layout restoration.
tom qab ua tiav
Raws li kev sib raug zoo ntawm cov ntsiab lus tshwj xeeb, qhov kev lees paub tau raug kho.
tso zis
Tso tawm cov cim paub ua ntawv hauv ib hom ntawv.
Yuav ua li cas yog cov kev siv ntawm handheld terminals raws li OCR technology?
Los ntawm lub handheld davhlau ya nyob twg PDA loaded nrog OCR cim cim software, ntau scene daim ntaub ntawv yuav tsum tau paub, xws li: tsheb daim ntawv tso cai daim ntawv lees paub, thawv naj npawb lees paub, imported nqaij nyuj thiab mutton luj daim ntawv lo paub, passport tshuab-readable cheeb tsam paub, hluav taws xob ntsuas nyeem ntawv paub , steel coil Paub txog cov cim txau.
Post lub sij hawm: Nov-16-2022