{"id":102437,"date":"2021-12-01T15:37:06","date_gmt":"2021-12-01T13:37:06","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-sistemy-raspoznavaniya-teksta-tesseract-5-0"},"modified":"2021-12-01T15:37:06","modified_gmt":"2021-12-01T13:37:06","slug":"reliz-sistemy-raspoznavaniya-teksta-tesseract-5-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/reliz-sistemy-raspoznavaniya-teksta-tesseract-5-0","title":{"rendered":"Lansering av Tesseract 5.0 textigenk\u00e4nning","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Version 4.1 av Tesseract, ett system f\u00f6r optisk teckenigenk\u00e4nning, har publicerats. Det st\u00f6der UTF-8 teckenigenk\u00e4nning och texter p\u00e5 mer \u00e4n 100 spr\u00e5k, inklusive ryska, kazakiska, vitryska och ukrainska. Resultatet kan sparas b\u00e5de som ren text och i formaten HTML (hOCR), ALTO (XML), PDF och TSV. Systemet skapades ursprungligen mellan 1985-1995 av Hewlett Packard, koden \u00f6ppnades under Apache-licensen 2005 och utvecklades vidare med hj\u00e4lp av Google-anst\u00e4llda. Projektets k\u00e4llkod distribueras under Apache 2.0-licensen.      <\/p>\n<p> Tesseract inkluderar en kommandoradsverktyg och libtesseract-biblioteket f\u00f6r att integrera textigenk\u00e4nningsfunktioner i andra applikationer. Bland de tredjeparts-GUI:er som st\u00f6djer Tesseract finns gImageReader, VietOCR och YAGF. Tv\u00e5 igenk\u00e4nningsmotorer erbjuds: en klassisk motor som k\u00e4nner igen text p\u00e5 symbolniv\u00e5 och en ny som bygger p\u00e5 maskininl\u00e4rning med hj\u00e4lp av en rekursiv neuronm\u00e4rrn\u00e4tverk (LSTM), optimerad f\u00f6r att k\u00e4nna igen hela rader och m\u00f6jligg\u00f6r en betydande \u00f6kning av noggrannheten. F\u00e4rdiga tr\u00e4nade modeller har publicerats f\u00f6r 123 spr\u00e5k. F\u00f6r att optimera prestandan erbjuds moduler som anv\u00e4nder OpenMP och SIMD-instruktioner AVX2, AVX, NEON eller SSE4.1.     <\/p>\n<p>Huvudsakliga f\u00f6rb\u00e4ttringar i Tesseract 5.0:  <\/p>\n<ul>\n<li class=\"l\"> Den betydande versions\u00e4ndringen beror p\u00e5 inkompatibla f\u00f6r\u00e4ndringar i API:et. S\u00e4rskilt, det offentligt tillg\u00e4ngliga API:t libtesseract \u00e4r inte l\u00e4ngre kopplat till propriet\u00e4ra datatyper som GenericVector och STRING, utan ist\u00e4llet anv\u00e4nds std::string och std::vector i koden.\n<li class=\"l\"> En omstrukturering av k\u00e4llkodstr\u00e4det har genomf\u00f6rts. Offentliga header-filer har flyttats till katalogen include\/tesseract.\n<li class=\"l\"> Minneshanteringen har reviderats, alla malloc- och free-anrop har ersatts med C++-kod. En allm\u00e4n uppgradering av koden har \u00e4ven genomf\u00f6rts.\n<li class=\"l\"> Optimeringar f\u00f6r ARM- och ARM64-arkitekturer har lagts till, och ARM NEON-instruktioner anv\u00e4nds f\u00f6r att snabba upp ber\u00e4kningarna. En allm\u00e4n prestandaoptimering har genomf\u00f6rts f\u00f6r alla arkitekturer.\n<li class=\"l\"> Nya tr\u00e4ningsl\u00e4gen f\u00f6r modeller och textigenk\u00e4nning har implementerats, baserade p\u00e5 flyttalsber\u00e4kningar. De nya l\u00e4gena erbjuder h\u00f6gre prestanda och l\u00e4gre minnesanv\u00e4ndning. I LSTM-motorn \u00e4r snabb l\u00e4ge float32 aktiverad som standard.\n<li class=\"l\"> \u00d6verg\u00e5ngen till Unicode-normalisering med anv\u00e4ndning av NFC (Normalization Form Canonical) har genomf\u00f6rts.\n<li class=\"l\"> En ny funktion har lagts till f\u00f6r att st\u00e4lla in loggniv\u00e5er (--loglevel).\n<li class=\"l\"> Byggsystemet baserat p\u00e5 Autotools har omarbetats f\u00f6r att st\u00f6dja icke-rekursiv byggning.\n<li class=\"l\"> Grenen \"master\" i Git har d\u00f6pts om till \"main\".\n<li class=\"l\"> St\u00f6d f\u00f6r nya versioner av macOS och system p\u00e5 Apple-chipet M1 har lagts till.<br \/>\n<br \/>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56259\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043e\u043f\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0440\u0430\u0441\u043f\u043e\u0437\u043d\u0430\u0432\u0430\u043d\u0438\u044f \u0442\u0435\u043a\u0441\u0442\u0430 Tesseract 4.1, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0449\u0435\u0439 \u0440\u0430\u0441\u043f\u043e\u0437\u043d\u0430\u0432\u0430\u043d\u0438\u0435 \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432 UTF-8 \u0438 \u0442\u0435\u043a\u0441\u0442\u043e\u0432 \u043d\u0430 \u0431\u043e\u043b\u0435\u0435 \u0447\u0435\u043c 100 \u044f\u0437\u044b\u043a\u0430\u0445, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u0440\u0443\u0441\u0441\u043a\u0438\u0439, \u043a\u0430\u0437\u0430\u0445\u0441\u043a\u0438\u0439, \u0431\u0435\u043b\u043e\u0440\u0443\u0441\u0441\u043a\u0438\u0439 \u0438 \u0443\u043a\u0440\u0430\u0438\u043d\u0441\u043a\u0438\u0439. \u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u043c\u043e\u0436\u0435\u0442 \u0441\u043e\u0445\u0440\u0430\u043d\u044f\u0442\u044c\u0441\u044f \u043a\u0430\u043a \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u043c \u0442\u0435\u043a\u0441\u0442\u043e\u043c, \u0442\u0430\u043a \u0438 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0430\u0445 HTML (hOCR), ALTO (XML), PDF \u0438 TSV. \u0418\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0431\u044b\u043b\u0430 \u0441\u043e\u0437\u0434\u0430\u043d\u0430 \u0432 1985-1995 \u0433\u043e\u0434\u0430\u0445 \u0432 \u043b\u0430\u0431\u043e\u0440\u0430\u0442\u043e\u0440\u0438\u0438 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Hewlett Packard, \u0432 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-102437","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - 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