{"id":103361,"date":"2022-02-16T21:37:38","date_gmt":"2022-02-16T19:37:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/predstavlen-unredacter-instrument-dlya-opredeleniya-pikselizirovannogo-teksta"},"modified":"2022-02-16T21:37:38","modified_gmt":"2022-02-16T19:37:39","slug":"predstavlen-unredacter-instrument-dlya-opredeleniya-pikselizirovannogo-teksta","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/predstavlen-unredacter-instrument-dlya-opredeleniya-pikselizirovannogo-teksta","title":{"rendered":"A fost prezentat Unredacter, un instrument pentru determinarea textului pixelat.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A fost prezentat un instrument numit Unredacter, care permite restaurarea textului original dup\u0103 ce acesta a fost ascuns prin utilizarea filtrelor bazate pe pixelizare. De exemplu, programul poate fi folosit pentru a identifica date confiden\u021biale \u0219i parole pixelizate pe capturi de ecran sau fotografii ale documentelor. Se afirm\u0103 c\u0103 algoritmul implementat \u00een Unredacter dep\u0103\u0219e\u0219te utilitarele similare disponibile anterior, cum ar fi Depix, \u0219i a fost folosit cu succes pentru a trece testul de identificare a textului pixelizat propus de laboratorul Jumpsec. Codul programului este scris \u00een TypeScript \u0219i este distribuit sub licen\u021ba GPLv3. <\/p>\n

Pentru restaurarea textului \u00een Unredacter se aplic\u0103 o metod\u0103 de regresie, conform c\u0103reia se compar\u0103 o parte a imaginii pixelizate originale cu o variant\u0103, sintetizat\u0103 prin \u00eencerc\u0103ri de combina\u021bii de caractere pixeliz\u00e2ndu-se cu diferite deplas\u0103ri \u0219i caracteristici modificate. Pe parcursul \u00eencerc\u0103rilor, se g\u0103se\u0219te treptat varianta care corespunde cel mai bine fragmentului original. Pentru a func\u021biona corect, este necesar s\u0103 se ghiceasc\u0103 dimensiunea, tipul \u0219i parametrii marginii fontului, precum \u0219i s\u0103 se calculeze dimensiunea celulei din grila de pixelizare \u0219i pozi\u021bia suprapunerii acestei grile pe text (variantele de deplasare ale grilei sunt verificate automat).

\"A<\/center> <\/p>\n

De asemenea, se poate men\u021biona proiectul DepixHMM, \u00een cadrul c\u0103ruia a fost preg\u0103tit\u0103 o variant\u0103 a utilitarului Depix, tradus\u0103 pe un algoritm bazat pe modele Markov ascunse, ceea ce a dus la cre\u0219terea acurate\u021bei recre\u0103rii simbolurilor.
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0430\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u044b\u0435 \u0443\u0442\u0438\u043b\u0438\u0442\u044b, \u0442\u0430\u043a\u0438\u0435 \u043a\u0430\u043a Depix, \u0438 \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0443\u0441\u043f\u0435\u0448\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d \u0434\u043b\u044f \u043f\u0440\u043e\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u0442\u0435\u0441\u0442\u0430 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":103362,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-103361","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47A fost prezentat Unredacter, un instrument pentru identificarea textului pixelizat | ProHoster","description":"A fost prezentat un instrument numit Unredacter, care permite restaurarea textului original dup\u0103 ce acesta a fost ascuns prin utilizarea filtrelor bazate pe 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