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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Discrete and Continuous Models and Applied Computational Science</journal-id><journal-title-group><journal-title xml:lang="en">Discrete and Continuous Models and Applied Computational Science</journal-title><trans-title-group xml:lang="ru"><trans-title>Discrete and Continuous Models and Applied Computational Science</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2658-4670</issn><issn publication-format="electronic">2658-7149</issn><publisher><publisher-name xml:lang="en">Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">20223</article-id><article-id pub-id-type="doi">10.22363/2312-9735-2018-26-4-331-342</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Modeling and Simulation</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Математическое моделирование</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Influence of Noise on the DTW Metric Value in Object Shape Recognition</article-title><trans-title-group xml:lang="ru"><trans-title>О влиянии шумов на значение метрики DTW при идентификации формы объектов</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gostev</surname><given-names>Ivan M</given-names></name><name xml:lang="ru"><surname>Гостев</surname><given-names>Иван Михайлович</given-names></name></name-alternatives><bio xml:lang="en"><p>Doctor of Technical Sciences, professor of Department of Information Systems and Digital Infrastructure Management of National Research University “Higher School of Economics”</p></bio><bio xml:lang="ru"><p>доктор технических наук, профессор кафедры управления информационными системами и цифровой инфраструктурой Национального исследовательского университета «Высшая школа экономики»</p></bio><email>igostev@hse.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sevastianov</surname><given-names>Leonid A</given-names></name><name xml:lang="ru"><surname>Севастьянов</surname><given-names>Леонид Антонович</given-names></name></name-alternatives><bio xml:lang="en"><p>Professor, Doctor of Physical and Mathematical Sciences, Professor of Department of Applied Probability and Informatics of Peoples’ Friendship University of Russia (RUDN University)</p></bio><bio xml:lang="ru"><p>профессор, доктор физико-математических наук, профессор кафедры прикладной информатики и теории вероятностей РУДН</p></bio><email>sevastianov-la@rudn.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National Research University “Higher School of Economics”</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский университет «Высшая школа экономики»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Peoples’ Friendship University of Russia (RUDN University)</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2018-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2018</year></pub-date><volume>26</volume><issue>4</issue><issue-title xml:lang="en">VOL 26, NO4 (2018)</issue-title><issue-title xml:lang="ru">ТОМ 26, №4 (2018)</issue-title><fpage>331</fpage><lpage>342</lpage><history><date date-type="received" iso-8601-date="2018-12-21"><day>21</day><month>12</month><year>2018</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2018, Gostev I.M., Sevastianov L.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2018, Гостев И.М., Севастьянов Л.А.</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="en">Gostev I.M., Sevastianov L.A.</copyright-holder><copyright-holder xml:lang="ru">Гостев И.М., Севастьянов Л.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/miph/article/view/20223">https://journals.rudn.ru/miph/article/view/20223</self-uri><abstract xml:lang="en"><p>The paper sets out one of the methodologies on image processing and recognition of the form of graphic objects. In it, at the first stage preliminary processing of the image with the purpose of extracting of characteristic attributes of the form of objects is made. Contours of objects are used as such attributes. For transformation of 2D contours of objects to one-dimensional contour function ArcHeight method has been used. The algorithm for identification contour functions based on metrics DTW is developed. Definition of the identification function based on this method is introduced. Features of application of metrics DTW are stated at identification of the form of objects. Matrices of distances of combinations the sample-sample and the sample-not sample are presented. Results of calculations of metrics DTW on a plenty of real data are analyzed. It is shown, that the developed algorithm allows to identify the form of objects independently of their position and an angle of turn on the image. Influence of the noise imposed on the image of object, on value of the metrics is investigated. Theoretical and practical results of such dependence are received; it shows that in a wide range (up to the ratio a signal/noise 10 dB) value of the metrics practically does not change. The positive parties and lacks of the offered algorithm are noted at identification of the form of object.</p></abstract><trans-abstract xml:lang="ru"><p>В работе изложена одна из методологий по обработке изображений и распознавания формы графических объектов. В ней на первом этапе производится предварительная обработка изображения с целью выделения характерных признаков формы объектов. В качестве таких признаков были использованы контуры. Для преобразования 2D контуров объектов в одномерную контурную функцию был использован метод ArcHeight. Для идентификации контурных функций разработан алгоритм на основе метрики DTW. Введено определение идентификационной функции, основанной на этом методе. Изложены особенности применения метрики DTW при идентификации формы объектов. Приведены матрицы расстояний комбинаций эталон-эталон и эталон-неэталон. Проанализированы результаты вычислений метрики DTW на большом количестве реальных данных. Показано, что разработанный алгоритм позволяет идентифицировать форму объектов независимо от их положения и угла поворота на изображении. Исследовано влияние шумов, наложенных на изображение объекта, на значение метрики. Получены теоретические и практические результаты такой зависимости, которые показывают, что в широком диапазоне (до отношения сигнал/шум 10 дБ) значение метрики практически не изменяется. Отмечены положительные стороны и недостатки предложенного алгоритма при идентификации формы объекта.</p></trans-abstract><kwd-group xml:lang="en"><kwd>image processing</kwd><kwd>pattern recognition</kwd><kwd>metric</kwd><kwd>DTW</kwd><kwd>noises</kwd><kwd>DTW</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>обработка изображений</kwd><kwd>распознавание образов</kwd><kwd>метрики</kwd><kwd>шумы</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">M. Seul, L. O’Gorman, M. Sammon, Practical Algorithms for Image Analysis, Cambridge University Press, 2000.</mixed-citation><mixed-citation xml:lang="ru">Seul M., O’Gorman L., Sammon M. Practical Algorithms for Image Analysis. — Cambridge University Press, 2000. — 295 p.</mixed-citation></citation-alternatives></ref><ref id="B2"><label>2.</label><citation-alternatives><mixed-citation xml:lang="en">W. K. 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