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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32446/0368-1025it.2023-12-26-34</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-2076</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОПТИКО-ФИЗИЧЕСКИЕ ИЗМЕРЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>OPTICOPHYSICAL MEASUREMENTS</subject></subj-group></article-categories><title-group><article-title>Повышение достоверности идентификации цифровых камер: оптимизация алгоритма сравнения шумовых портретов</article-title><trans-title-group xml:lang="en"><trans-title>Improving the reliability of digital cameras identification by optimizing the noise portraits comparing</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5777-9946</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Козлов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Козлов Александр Валерьевич - младший научный сотрудник ФГУП ВНИИФТРИ; инженер НИЯУ МИФИ.</p><p>Москва</p></bio><bio xml:lang="en"><p>Alexandr V. Kozlov.</p><p>Moscow</p></bio><email xlink:type="simple">alexkozlowv@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-8185-2708</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никитин</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitin</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Никитин Николай Вячеславович.</p><p>Москва</p></bio><bio xml:lang="en"><p>Nikolay V. Nikitin.</p><p>Moscow</p></bio><email xlink:type="simple">nikitin.nik.v@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3667-8262</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Родин</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Rodin</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Родин Владислав Геннадьевич.</p><p>Москва</p></bio><bio xml:lang="en"><p>Vladislav G. Rodin.</p><p>Moscow</p></bio><email xlink:type="simple">holo_mephi@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3556-2663</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Черёмхин</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Cheremkhin</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Черёмхин Павел Аркадьевич.</p><p>Москва</p></bio><bio xml:lang="en"><p>Pavel A. Cheremkhin.</p><p>Moscow</p></bio><email xlink:type="simple">cheremhinpavel@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский ядерный университет «МИФИ»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>30</day><month>01</month><year>2024</year></pub-date><volume>0</volume><issue>12</issue><fpage>26</fpage><lpage>34</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/2076">https://www.izmt.ru/jour/article/view/2076</self-uri><abstract><p>Рассмотрены вопросы оптимизации существующих методов идентификации фотосенсоров современных цифровых камер. Приведены пути повышения достоверности идентификации цифровых камер – определения цифровой камеры, которой был сделан тот или иной снимок. Оптически зарегистрированы однородные снимки для формирования шумового портрета и тестовый набор изображений бытовых сцен для идентификации трёх камер различных типов по снимкам. Оптимизированы цифровая фильтрация снимка и метрика идентичности изображений. Для оценки сглаженных изображений подобран оптимальный цифровой фильтр, с его использованием определены шумовые портреты идентифицируемых камер. Найден оптимальный критерий идентичности при сравнении шумовых портретов камер. Применение оптимального фильтра и критерия идентичности позволило повысить в среднем более чем в 60 раз достоверность идентификации камеры, с помощью которой сделан конкретный снимок. Полученные результаты можно использовать при решении задач в областях регистрации и обработки изображений, безопасности, криминалистики, анализа больших данных и др.</p></abstract><trans-abstract xml:lang="en"><p>The issues of optimization of existing methods for digital camera sensor identification are considered. Ways of improvement of reliability of digital cameras identification is discussed. Homogeneous images were optically recorded to form a noise portrait and test sets of amateur images for 3 cameras of various types. An optimal digital filter was selected to evaluate smoothed images for obtaining noise portraits of identified cameras. Camera identification algorithm was optimized basing on a comparison of light spatial noise portraits. Application of the optimal filter and identity criterion provides an average increase of identification reliability of more than 60 times. The results can be useful in the areas of image registration and processing, security, forensics, big data analysis, etc.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>цифровые камеры</kwd><kwd>идентификация камер</kwd><kwd>регистрация изображений</kwd><kwd>шумовой портрет</kwd><kwd>цифровая фильтрация</kwd><kwd>пространственные шумы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>digital cameras</kwd><kwd>camera identification</kwd><kwd>image registration</kwd><kwd>noise portrait</kwd><kwd>digital filtering</kwd><kwd>spatial noise</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Российского научного фонда (РНФ), грант № 22-29-00603.</funding-statement><funding-statement xml:lang="en">The work was supported by the Russian Science Foundation (RSF), Grant no. 22-29-00603.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Fan Y., Li J., Guo Y., Xie L., Zhang G., Measurement, 2021, vol. 171, 108829. https://doi.org/10.1016/j.measurement.2020.108829</mixed-citation><mixed-citation xml:lang="en">Fan Y., Li J., Guo Y., Xie L., Zhang G., Measurement, 2021, vol. 171, 108829. https://doi.org/10.1016/j.measurement.2020.108829</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Jurre van Kesteren, Leandra A. 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