{"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\/it\/blog\/novosti-interneta\/predstavlen-unredacter-instrument-dlya-opredeleniya-pikselizirovannogo-teksta","title":{"rendered":"\u00c8 stato presentato Unredacter, uno strumento per l'identificazione di testo pixelato","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00c8 stato presentato lo strumento Unredacter, che consente di ripristinare il testo originale dopo che \u00e8 stato nascosto tramite filtri basati su pixelizzazione. Ad esempio, il programma pu\u00f2 essere utilizzato per identificare dati riservati e password pixelati in screenshot o fotografie di documenti. Si afferma che l'algoritmo implementato in Unredacter superi utilit\u00e0 simili precedentemente disponibili, come Depix, ed \u00e8 stato utilizzato con successo per superare il test di identificazione del testo pixelato proposto dal laboratorio Jumpsec. Il codice del programma \u00e8 scritto in TypeScript e distribuito sotto licenza GPLv3. <\/p>\n

Per recuperare il testo in Unredacter, viene utilizzato un metodo di attacco a forza bruta, in base al quale viene eseguito un confronto di una parte dell'immagine pixelata con una variante sintetizzata tramite il tentativo di coppie di caratteri, pixelati con vari spostamenti e caratteristiche modificate. Durante il tentativo, viene gradualmente trovata la variante che corrisponde maggiormente al frammento originale. Per un funzionamento efficace, \u00e8 necessario indovinare correttamente la dimensione, il tipo e le caratteristiche dei margini del font, cos\u00ec come calcolare la dimensione della cella nella griglia di pixelazione e la posizione di sovrapposizione di questa griglia sul testo (le varianti di spostamento della griglia vengono provate automaticamente).

\"\u00c8<\/center> <\/p>\n

Inoltre, \u00e8 possibile notare il progetto DepixHMM, nell'ambito del quale \u00e8 stata preparata una versione dell'utilit\u00e0 Depix, tradotta in un algoritmo basato su un modello di Markov nascosto, che ha consentito di migliorare la precisione nella ricreazione dei caratteri.
\n
Fonte: 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-novosti-interneta"],"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\udd47Presentato Unredacter, strumento per l'identificazione del testo pixelizzato | ProHoster","description":"\u00c8 stato presentato lo strumento Unredacter, che consente di ripristinare il testo originale dopo che \u00e8 stato nascosto utilizzando filtri basati su pixelizzazione. Ad esempio, il programma pu\u00f2 essere utilizzato per identificare dati riservati e password pixelizzati in screenshot o immagini di documenti. 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