{"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\/pl\/blog\/news\/predstavlen-unredacter-instrument-dlya-opredeleniya-pikselizirovannogo-teksta","title":{"rendered":"Zaprezentowano Unredacter, narz\u0119dzie do okre\u015blania pikselizowanego tekstu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Przedstawiono narz\u0119dzie Unredacter, kt\u00f3re umo\u017cliwia odzyskiwanie pierwotnego tekstu po jego ukryciu za pomoc\u0105 filtr\u00f3w opartych na pikselizacji. Program mo\u017ce by\u0107 u\u017cywany do identyfikowania danych wra\u017cliwych oraz hase\u0142, kt\u00f3re zosta\u0142y pikselizowane na zrzutach ekranu lub zdj\u0119ciach dokument\u00f3w. Uwa\u017ca si\u0119, \u017ce algorytm wdro\u017cony w Unredacter przewy\u017csza wcze\u015bniej dost\u0119pne podobne narz\u0119dzia, takie jak Depix, i zosta\u0142 skutecznie wykorzystany do przeprowadzenia testu na wykrywanie pikselizowanego tekstu, zaproponowanego przez laboratorium Jumpsec. Kod programu zosta\u0142 napisany w TypeScript i jest udost\u0119pniany na licencji GPLv3. <\/p>\n

W Unredacterze do odzyskiwania tekstu stosowana jest metoda odwrotnego dopasowywania, w ramach kt\u00f3rej por\u00f3wnywana jest cz\u0119\u015b\u0107 \u017ar\u00f3d\u0142owego pikselizowanego obrazu z wariantem, syntetyzowanym poprzez kombinacje par znak\u00f3w pikselizowanych z r\u00f3\u017cnymi przesuni\u0119ciami i zmodyfikowanymi parametrami. W trakcie dopasowywania stopniowo wybierany jest wariant, kt\u00f3ry najbardziej odpowiada \u017ar\u00f3d\u0142owemu fragmentowi. Aby operacja zako\u0144czy\u0142a si\u0119 sukcesem, nale\u017cy prawid\u0142owo odgadn\u0105\u0107 rozmiar, typ i parametry odst\u0119p\u00f3w czcionki, a tak\u017ce obliczy\u0107 rozmiar kom\u00f3rki w siatce pikselizacji i po\u0142o\u017cenie na\u0142o\u017cenia tej siatki na tekst (warianty przesuni\u0119cia siatki s\u0105 automatycznie testowane).

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

Dodatkowo mo\u017cna wspomnie\u0107 o projekcie DepixHMM, w ramach kt\u00f3rego przygotowano wersj\u0119 narz\u0119dzia Depix, przet\u0142umaczon\u0105 na algorytm bazuj\u0105cy na ukrytej marce modelowej, dzi\u0119ki kt\u00f3remu uda\u0142o si\u0119 poprawi\u0107 dok\u0142adno\u015b\u0107 rekonstrukcji znak\u00f3w.
\n
\u0179r\u00f3d\u0142o: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 Unredacter, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u0432\u043e\u0441\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c \u0438\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u044b\u0439 \u0442\u0435\u043a\u0441\u0442, \u043f\u043e\u0441\u043b\u0435 \u0435\u0433\u043e \u0441\u043a\u0440\u044b\u0442\u0438\u044f \u0441 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435\u043c \u0444\u0438\u043b\u044c\u0442\u0440\u043e\u0432 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043f\u0438\u043a\u0441\u0435\u043b\u0438\u0437\u0430\u0446\u0438\u0438. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430 \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438 \u043f\u0430\u0440\u043e\u043b\u0435\u0439, \u043f\u0438\u043a\u0441\u0435\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 \u0441\u043a\u0440\u0438\u043d\u0448\u043e\u0442\u0430\u0445 \u0438\u043b\u0438 \u0441\u043d\u0438\u043c\u043a\u0430\u0445 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u043e\u0432. \u0423\u0442\u0432\u0435\u0440\u0436\u0434\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0432 Unredacter \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c \u043f\u0440\u0435\u0432\u043e\u0441\u0445\u043e\u0434\u0438\u0442 \u0440\u0430\u043d\u0435\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b\u0435 \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\udd47 Przedstawiono Unredacter, narz\u0119dzie do identyfikacji pikselizowanego tekstu | ProHoster","description":"Przedstawiono narz\u0119dzie Unredacter, kt\u00f3re umo\u017cliwia odzyskiwanie pierwotnego tekstu po jego ukryciu za pomoc\u0105 filtr\u00f3w opartych na 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