{"id":54815,"date":"2020-01-05T00:00:00","date_gmt":"2020-01-04T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/vypusk-biblioteki-kompyuternogo-zreniya-opencv-4-2"},"modified":"2020-02-18T14:02:52","modified_gmt":"2020-02-18T11:02:52","slug":"vypusk-biblioteki-kompyuternogo-zreniya-opencv-4-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/vypusk-biblioteki-kompyuternogo-zreniya-opencv-4-2","title":{"rendered":"Uscita della libreria di visione artificiale OpenCV 4.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/opencv.org\/opencv-4-2-0\/\">Si \u00e8 svolto<\/a><\/noindex> rilascio della libreria open source <noindex><a rel=\"nofollow\" href=\"http:\/\/opencv.org\/\">OpenCV 4.2<\/a><\/noindex> (Open Source Computer Vision Library), che offre strumenti per l'elaborazione e l'analisi del contenuto delle immagini. OpenCV fornisce oltre 2500 algoritmi, sia classici che riflettenti le ultime scoperte nel campo della visione artificiale e dei sistemi di apprendimento automatico. Il codice della libreria \u00e8 scritto in C++ e <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/opencv\/opencv\/\">distribuito<\/a><\/noindex> sotto licenza BSD. I binding sono stati preparati per diversi linguaggi di programmazione, tra cui Python, MATLAB e Java.<\/p>\n<p>La libreria pu\u00f2 essere utilizzata per il riconoscimento di oggetti in foto e video (ad esempio, riconoscimento facciale e delle forme umane, del testo, ecc.), monitoraggio del movimento di oggetti e della telecamera, classificazione delle azioni nei video, trasformazione delle immagini, estrazione di modelli 3D, creazione di spazi 3D da immagini provenienti da telecamere stereo, realizzazione di immagini di alta qualit\u00e0 attraverso la fusione di immagini di qualit\u00e0 inferiore, ricerca di oggetti simili a un insieme fornito all'interno di un'immagine, applicazione di metodi di machine learning, posizionamento di marcatori, identificazione di elementi comuni in immagini diverse, rimozione automatica di difetti come l'effetto occhi rossi.<\/p>\n<p>In <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/opencv\/opencv\/wiki\/ChangeLog#version420\">nuovo<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/opencv\/opencv\/releases\/tag\/4.2.0\">rilascio<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> Nel modulo DNN (Deep Neural Network), con implementazione di algoritmi di machine learning basati su reti neurali, \u00e8 stato aggiunto un backend per l'utilizzo di CUDA e implementato un supporto sperimentale per l'API. <noindex><a rel=\"nofollow\" href=\"http:\/\/docs.openvinotoolkit.org\/\">nGraph OpenVINO<\/a><\/noindex>;\n<li class=\"l\"> L'ottimizzazione delle prestazioni del codice per la stereovisione (StereoBM\/StereoSGBM), ridimensionamento, applicazione di maschere, rotazione, calcolo dei componenti di colore mancanti e molte altre operazioni \u00e8 stata realizzata con l'uso di istruzioni SIMD.\n<li class=\"l\"> Aggiunta l'implementazione multi-thread della funzione <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.opencv.org\/3.4\/d4\/d86\/group__imgproc__filter.html#gaf9bba239dfca11654cb7f50f889fc2ff\">pyrDown<\/a><\/noindex>;\n<li class=\"l\"> Aggiunta la possibilit\u00e0 di estrarre flussi video dai contenitori multimediali (demuxing) utilizzando il backend videoio basato su FFmpeg;\n<li class=\"l\"> Aggiunto un algoritmo per la rapida ricostruzione selettiva per frequenza di immagini danneggiate <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.opencv.org\/4.2.0\/dc\/d2f\/tutorial_xphoto_inpainting.html\">FSR<\/a><\/noindex> (Ricostruzione Selettiva per Frequenza);\n<li class=\"l\"> Aggiunto il metodo <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/opencv\/opencv_contrib\/pull\/2367\">RIC<\/a><\/noindex> per l'interpolazione di aree vuote standard;\n<li class=\"l\"> Aggiunto un metodo di normalizzazione delle deviazioni <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/short-circuitt\/LOGOS\">LOGOS<\/a><\/noindex>;\n<li class=\"l\"> Nel modulo G-API (opencv_gapi), che funge da motore per l'elaborazione efficiente delle immagini utilizzando algoritmi basati su grafi, \u00e8 stata implementata la supporto per algoritmi ibridi pi\u00f9 complessi di visione artificiale e apprendimento profondo. \u00c8 stato garantito il supporto per il backend Intel Inference Engine. Nella modalit\u00e0 di esecuzione \u00e8 stato aggiunto il supporto per l'elaborazione dei flussi video;\n<li class=\"l\"> Risolti <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.talosintelligence.com\/2020\/01\/opencv-buffer-overflow-jan-2020.html\">vulnerabilit\u00e0<\/a><\/noindex>  (<noindex><a rel=\"nofollow\" href=\"https:\/\/www.talosintelligence.com\/vulnerability_reports\/TALOS-2019-0852\">CVE-2019-5063<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.talosintelligence.com\/vulnerability_reports\/TALOS-2019-0853\">CVE-2019-5064<\/a><\/noindex>), che potrebbero potenzialmente portare all'esecuzione di codice da parte di un attaccante durante l'elaborazione di dati non verificati nei formati XML, YAML e JSON. Se durante l'analisi JSON viene incontrato un simbolo con codice zero, il valore viene copiato interamente nel buffer, ma senza adeguati controlli sui limiti della memoria allocata.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52134\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 OpenCV 4.2 (Open Source Computer Vision Library), \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0439 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0434\u043b\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0438 \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439. OpenCV \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0431\u043e\u043b\u0435\u0435 2500 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u0432, \u043a\u0430\u043a \u043a\u043b\u0430\u0441\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0445, \u0442\u0430\u043a \u0438 \u043e\u0442\u0440\u0430\u0436\u0430\u044e\u0449\u0438\u0445 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0438\u0435 \u0434\u043e\u0441\u0442\u0438\u0436\u0435\u043d\u0438\u044f \u0432 \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u043d\u043e\u0433\u043e \u0437\u0440\u0435\u043d\u0438\u044f \u0438 \u0441\u0438\u0441\u0442\u0435\u043c \u043c\u0430\u0448\u0438\u043d\u043d\u043e\u0433\u043e \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u044f. \u041a\u043e\u0434 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421++ \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 BSD. \u0411\u0438\u043d\u0434\u0438\u043d\u0433\u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u044b \u0434\u043b\u044f \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u044f\u0437\u044b\u043a\u043e\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-54815","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f 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