{"id":35989,"date":"2019-10-31T22:08:59","date_gmt":"2019-10-31T19:08:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/skanirovanie-dokumentov-po-seti\/"},"modified":"2019-10-31T22:08:59","modified_gmt":"2019-10-31T19:08:59","slug":"skanirovanie-dokumentov-po-seti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/skanirovanie-dokumentov-po-seti","title":{"rendered":"Dokumentide skaneerimine v\u00f5rgus","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Dokumentide skaneerimine \u00fcle v\u00f5rgu n\u00e4ib olemas olevat, kuid teisest k\u00fcljest ei ole see saanud laialdaseks praktikaks, erinevalt v\u00f5rgu printimisest. Administratorid paigaldavad endiselt draivereid, ja eemalskaneerimise seadistamine on iga skanneri mudeli jaoks individuaalne. Millised tehnoloogiad on hetkel olemas ja kas sellisel stsenaariumil on tulevik?
\n<\/a><\/noindex><\/p>\n

Paigaldatav draiver v\u00f5i otsejuurdep\u00e4\u00e4s<\/h2>\n

\nPraegu on levinud neli t\u00fc\u00fcpi draivereid: TWAIN, ISIS, SANE ja WIA. Need draiverid toimivad t\u00f5epoolest liidese rollina rakenduse ja tootja madalama taseme teegi vahel, mis on seotud konkreetse mudeliga. <\/p>\n

\"Dokumentide
\nLihtsustatud arhitektuur skanneriga \u00fchendamiseks<\/p>\n

Tavaliselt arvatakse, et skanner on otse arvutiga \u00fchendatud. Siiski ei piirata keegi protokolli madalama taseme teegi ja seadme vahel. See v\u00f5ib olla ka TCP\/IP. Just nii t\u00f6\u00f6tab enamik v\u00f5rgu MFP-sid: skanner on n\u00e4htav nagu lokaalne, kuid \u00fchendus k\u00e4ib l\u00e4bi v\u00f5rgu.<\/p>\n

Selle lahenduse eeliseks on see, et rakendusele ei ole oluline, kuidas \u00fchendamine t\u00e4pselt toimub; oluline on n\u00e4ha tuttavat TWAIN, ISIS v\u00f5i muud liidest. Erilist tuge rakendama ei pea. <\/p>\n

Kuid ka negatiivsed k\u00fcljed on ilmsed. Lahendus on seotud lauaarvuti operatsioonis\u00fcsteemiga. Mobiilsed seadmed j\u00e4\u00e4vad kohe toe alt v\u00e4lja. Teine miinus on see, et draiverid v\u00f5ivad keerulistel infrastruktuuridel, n\u00e4iteks terminaliserveritega, kus on \u00f5hukesed kliendid, ebastabiilselt t\u00f6\u00f6tada. <\/p>\n

Lahenduseks oleks otse\u00fchenduse toetamine skanneriga HTTP\/RESTful protokolli kaudu. <\/p>\n

TWAIN Direct<\/h3>\n

\nTWAIN Direct<\/a><\/noindex> pakuti v\u00e4lja TWAIN Working Groupi konsortsiumi poolt kui draiverivaba ligip\u00e4\u00e4su variant.<\/p>\n

\"Dokumentide
\nTWAIN Direct<\/p>\n

Peamine idee on see, et kogu loogika kantakse skanneri poolele. Skanner v\u00f5imaldab juurdep\u00e4\u00e4su REST API kaudu. Lisaks sisaldab spetsifikatsioon seadme publitseerimise (autodiscovery) kirjeldust. See n\u00e4eb h\u00e4sti v\u00e4lja. Administratorile t\u00e4hendab see draiveriprobleemide v\u00e4ltimist. K\u00f5ikide seadmete tugi, oluline on, et oleks \u00fchilduv rakendus. Arendajatele on ka eeliseid, eelk\u00f5ige tuttav suhtlusliides. Skanner tegutseb veebiteenusena. <\/p>\n

Tegeliku kasutuse puhul tasub arvesse v\u00f5tta ka negatiivseid aspekte. Esiteks, olukord, kus tekib patt. Turul ei ole seadmeid TWAIN Direct'iga ja arendajatel pole m\u00f5tet seda tehnoloogiat toetada \u2014 ja ka vastupidi. Teiseks, turvalisus, spetsifikatsioon ei sea n\u00f5udeid kasutajate juhtimisele ega uuenduste sagedusele v\u00f5imalike turvaaukude sulgemiseks. Samuti pole selge, kuidas administraatorid uuendusi ja juurdep\u00e4\u00e4su kontrollida saavad. Arvutis on viiruset\u00f5rjetarkvara. Kuid skanneri tarkvaras v\u00f5ib seda m\u00f5istetavalt puududa veebiserver<\/a>, v\u00f5i v\u00f5ib see olla olemas, kuid mitte vastata ettev\u00f5tte turvapoliitika n\u00f5uetele. Olge n\u00f5us, et pahavara, mis saadab k\u00f5ik skaneeritud dokumendid k\u00f5rvale, ei ole just k\u00f5ige parem lahendus. See t\u00e4hendab, et selle standardi rakendamisega seotud \u00fclesanded, mis varem olid kolmanda osapoole rakenduste seadistuste arvel, koonduvad seadmete tootjate kanda.<\/p>\n

Kolmas miinus on v\u00f5imalik funktsionaalsuse kadumine. Draiveritel v\u00f5ivad olla t\u00e4iendavad j\u00e4relt\u00f6\u00f6tlusv\u00f5imalused. Veebikoodide tuvastamine, tausta eemaldamine. M\u00f5ned skannerid on varustatud nn imprinteriga \u2014 funktsioon, mis v\u00f5imaldab skanneril tr\u00fckkida t\u00f6\u00f6deldud dokumendile. Seda ei ole TWAIN Direct'is. Spetsifikatsioon lubab API laiendamist, kuid see toob kaasa mitmeid omamoodi teostusi. <\/p>\n

Ja veel \u00fcks miinus skanneri kasutamise stsenaariumides. <\/p>\n

Skaneerimine rakendusest v\u00f5i seadmest skaneerimine <\/h2>\n

\nVaatame, kuidas toimub tavaline skaneerimine rakendusest. Asetan dokumendi. Siis avatakse rakendus ja skaneerin. Seej\u00e4rel v\u00f5tan dokumendi. Kolm sammu. Kujutage n\u00fc\u00fcd ette, et v\u00f5rgu skanner on teises ruumis. Peab minema v\u00e4hemalt kaks korda. See on v\u00e4hem mugav kui v\u00f5rgu printimine. <\/p>\n

\"Dokumentide
\nTeine asi on see, kui skanner oskab ise dokumenti saata. N\u00e4iteks e-postile. Asetan dokumendi. Siis skaneerin. Dokument l\u00e4heb kohe sihts\u00fcsteemi. <\/p>\n

\"Dokumentide
\nSelle \u00fches on peamine erinevus. Kui seade on v\u00f5rgus, on mugavam skaneerida otse sihtsalvestusse: kausta, e-posti v\u00f5i ECM s\u00fcsteemi. Selles skeemis ei ole ruumi draiverile. <\/p>\n

Vaadates k\u00f5rvalt, kasutame me v\u00f5rguskaneerimist, muutes olemasolevaid tehnoloogiaid. Ja seda nii desktop-rakenduste kaudu draiveri, kui ka otse seadme kaudu. Kuid kaugskaneerimine arvutist ei ole saanud nii massiliseks kui v\u00f5rguprintimine, erinevuste t\u00f5ttu t\u00f6\u00f6stsenaariumides. \u00dcha suuremat n\u00f5udlust tekitab skaneerimine otse vajalikku salvestusse.<\/p>\n

TWAIN Direct skannerite toetus draiverite asendamise n\u00e4ol on v\u00e4ga \u00f5ige samm. Kuid standard on veidi hiljaks j\u00e4\u00e4nud. Kasutajad soovivad skaneerida otse v\u00f5rgu seadmetest, saates dokumendid sihtkohta. Olemasolevatel rakendustel ei ole vaja uut standardit toetada, kuna k\u00f5ik t\u00f6\u00f6tab endiselt suurep\u00e4raselt ja skannerite tootjatel ei ole tungi seda rakendada, kuna rakendusi ei ole. <\/p>\n

Kokkuv\u00f5tteks. \u00dcks peamine trend n\u00e4itab, et lihtne \u00fche-kahe lehe skaneerimine asendub telefonide kaamerate kasutamisega. J\u00e4\u00e4b t\u00f6\u00f6stuslik skaneerimine, kus on olulised kiirus, toetatud funktsioonid ja p\u00e4rast t\u00f6\u00f6tlemine, mida TWAIN Direct ei suuda pakkuda, ning kus j\u00e4\u00e4b oluliseks tihe integreerimine tarkvaraga.
\n
Allikas: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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Administraatorid installivad endiselt draivereid ning kaugskaneerimise seadistamine on iga skanneri mudeli puhul individuaalne. Millised tehnoloogiad on hetkel olemas ja kas sellisel stsenaariumil on tulevik? 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