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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">radioelectronics</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений России. Радиоэлектроника</journal-title><trans-title-group xml:lang="en"><trans-title>Journal of the Russian Universities. Radioelectronics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1993-8985</issn><issn pub-type="epub">2658-4794</issn><publisher><publisher-name>Saint Petersburg Electrotechnical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32603/1993-8985-2018-22-2-22-30</article-id><article-id custom-type="elpub" pub-id-type="custom">radioelectronics-309</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>ТЕЛЕВИДЕНИЕ И ОБРАБОТКА ИЗОБРАЖЕНИЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TELEVISION AND IMAGE PROCESSING</subject></subj-group></article-categories><title-group><article-title>ИССЛЕДОВАНИЕ И РАЗРАБОТКА МЕТОДОВ УЛУЧШЕНИЯ ЭНДОСКОПИЧЕСКИХ (МЕДИЦИНСКИХ) ИЗОБРАЖЕНИЙ</article-title><trans-title-group xml:lang="en"><trans-title>RESEARCH AND DEVELOPMENT OF METHODS FOR ENDOSCOPIC (MEDICAL) IMAGES ENHANCEMENT</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Обухова</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Obukhova</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор технических наук (2009), профессор (2004) кафедры телевидения и видеотехники</p></bio><bio xml:lang="en"><p>Dr. of Sci. (Engineering) (2009), Professor (2004) of the Department of Television and Video Equipment</p></bio><email xlink:type="simple">natalia172419@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/0000-0003-4241-4298</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мотыко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Motyko</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат технических наук (2012), ассистент кафедры телевидения и видеотехники</p></bio><bio xml:lang="en"><p>Cand. of Sci. (Engineering) (2012), Associate Professor of the Department of Television and Video Equipment</p></bio><email xlink:type="simple">motyko.alexandr@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Поздеев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Pozdeev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>магистр по направлению "Радиотехника" (2016), аспирант, ассистент кафедры телевидения и видеотехники</p></bio><bio xml:lang="en"><p>Master on Radio Engineering (2016), Postgraduate Student, Assistant of the Department of Television and Video Equipment</p></bio><email xlink:type="simple">puches4@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В. И. Ульянова (Ленина)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Saint Petersburg Electrotechnical University "LETI"</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>24</day><month>04</month><year>2019</year></pub-date><volume>22</volume><issue>2</issue><fpage>22</fpage><lpage>30</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Обухова Н.А., Мотыко А.А., Поздеев А.А., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Обухова Н.А., Мотыко А.А., Поздеев А.А.</copyright-holder><copyright-holder xml:lang="en">Obukhova N.A., Motyko A.A., Pozdeev A.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://re.eltech.ru/jour/article/view/309">https://re.eltech.ru/jour/article/view/309</self-uri><abstract><sec><title>Введение</title><p>Введение. Современные технологии виртуальной хромоэндоскопии призваны существенно повысить диагностическую ценность предъявляемых врачу изображений. Анализ существующих технологий показывает, что имеющиеся решения не лишены значительных недостатков. Одни требуют для работы проведения сложной предварительной аппаратной калибровки, другие используют глобальные преобразования, не позволяющие учесть локальные особенности тканей, и т. д. В целом сейчас не существует технологии виртуальной хромоэндоскопии, устраивающей большинство потенциальных пользователей – врачей, а следовательно, есть поле для исследования.</p></sec><sec><title>Цель работы</title><p>Цель работы. Разработка метода для виртуальной хромоэндоскопии с учетом недостатков, выявленных у аналогов в результате анализа.</p></sec><sec><title>Методы и материалы</title><p>Методы и материалы. Для проведения исследований были использованы открытые базы данных эндоскопических изображений, с помощью которых в результате моделирования и эксперимента были оценены качественные характеристики предложенного метода.</p></sec><sec><title>Результаты</title><p>Результаты. Новый метод виртуальной хромоэндоскопии, главная особенность которого – использование нелинейных локальных функций трансформации при преобразовании RGB-каналов, а также отсутствие процедуры калибровки для получения эффекта виртуальной хромоэндоскопии. Предложенный метод полностью основан на технологии цифровой обработки изображений, включает коррекцию яркости изображения, обеспечивающую возможность получения необходимой визуальной информации как из очень темных, так и из переэкспонированных фрагментов; повышение резкости изображения, подчеркивающее мелкие детали и сосуды.</p></sec><sec><title>Заключение</title><p>Заключение. Экспертная оценка полученных результатов показывает, что визуальный эффект предложенного метода соответствует, а в отдельных случаях и превосходит визуальный эффект проприетарных технологий виртуальной эндоскопии I-Scan и FICE.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The modern technologies of virtual chromoendoscopy provide significant increase of diagnostic value of images considered by a doctor. The analysis of existing technologies shows that the existing solutions have significant disadvantages. Some of them require a complex preliminary calibration of the equipment for operation. Others use global transformations, making impossible consideration of local tissues characteristics and so on. In general, nowadays the technology of virtual chromoendoscopy, which suits the majority of potential users – doctors, does not exists, and, therefore, there it is a field for research.</p></sec><sec><title>Objective</title><p>Objective. Development of the method for virtual chromoendoscopy, with regard to disadvantages identified within the frames of carried out analysis of similar methods.</p></sec><sec><title>Methods and materials</title><p>Methods and materials. For implementation of the research were used open endoscopic image data-bases, by the instrumentality of which, as a result of modeling and experiment, were evaluated quality characteris-tics of the proposed method.</p></sec><sec><title>Results</title><p>Results. The new method of virtual chromoendoscopy. The main feature of the method is usage of nonlinear local transformation functions in transformation of RGB channels, as well as absence of calibration procedure for obtaining the effect of virtual chromoendoscopy. The proposed method is completely based on the technology of digital image processing and includes image brightness correction, which provides the possibility to obtain the necessary visual information both from very dark and overexposed fragments; image sharpening, contrasting small details and vessels.</p></sec><sec><title>Conclusion</title><p>Conclusion. The expert assessment of the obtained results shows that the visual effect of the proposed method corresponds, or in some cases, exceeds the visual effect of proprietary technologies of virtual endoscopy I-Scan and FICE.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>виртуальная хромоэндоскопия</kwd><kwd>цифровая обработка медицинских изображений</kwd><kwd>нелинейное контрастирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Virtual chromoendoscopy</kwd><kwd>digital medical image processing</kwd><kwd>nonlinear contrast enhancing</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Won Young Cho, Jae Young Jang, Don Haeng Lee. Recent Advances in Image-enhanced Endoscopy // Clinical Endoscopy. 2011. Vol. 44, № 2. P. 65–75. doi: 10.5946/ce.2011.44.2.65</mixed-citation><mixed-citation xml:lang="en">Won Young Cho, Jae Young Jang, Don Haeng Lee. 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