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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">izvestswsu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Юго-Западного государственного университета</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Southwest State University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-1560</issn><issn pub-type="epub">2686-6757</issn><publisher><publisher-name>ЮЗГУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21869/2223-1560-2020-24-2-90-107</article-id><article-id custom-type="elpub" pub-id-type="custom">izvestswsu-775</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>Информатика, вычислительная техника и управление</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Computer science, computer engineering and IT managment</subject></subj-group></article-categories><title-group><article-title>Применение модели скоростной кластеризации пикселей в задачах предобработки изображений дистанционного зондирования Земли</article-title><trans-title-group xml:lang="en"><trans-title>Application of the Pixel Velocity Clustering Model in the Tasks of Preprocessing images of Earth Remote Sensing</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6284-0839</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ханыков</surname><given-names>И. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Khanykov</surname><given-names>I. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ханыков Игорь Георгиевич - магистр техники и технологии, младший научный сотрудник.14 линия В.О. 39, Санкт-Петербург 199178.</p></bio><bio xml:lang="en"><p>Igor G. Khanykov - Master of Computer Sciences, Junior Research Officer, St.Petersburg Institute for Informatics and Automation of the Russian Academy of Sciences (SPIIRAS).39, 14-th Line V.O., St. Petersburg 199178.</p></bio><email xlink:type="simple">igk@iias.spb.su</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский Институт информатики и автоматизации Российской академии наук (СПИИРАН)</institution></aff><aff xml:lang="en"><institution>St.Petersburg Institute for Informatics and Automation of the Russian Academy of Sciences (SPIIRAS)</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>04</day><month>10</month><year>2020</year></pub-date><volume>24</volume><issue>2</issue><fpage>90</fpage><lpage>107</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ханыков И.Г., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Ханыков И.Г.</copyright-holder><copyright-holder xml:lang="en">Khanykov I.G.</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://izvestswsu.elpub.ru/jour/article/view/775">https://izvestswsu.elpub.ru/jour/article/view/775</self-uri><abstract><p>Цель исследования заключается в применении модифицированного метода Уорда в скоростной обработке полноразмерных изображений дистанционного зондирования Земли.Методы. Классический метод Уорда модифицируется путем разделения вычислительного процесса на три последовательных этапа. На первом этапе строится грубая иерархия приближений. На втором этапе выполняется промежуточное улучшение качества заданного разбиения при фиксированном числе цветов. Третий этап кластеризует полученные суперпиксели классическим методом Уорда. Программно-алгоритмический инструментарий составляют четыре операции над кластерами пикселей и сегментами изображения: слияние пары кластеров в один, разделение кластера на Два исходных, выделение подмножества пикселей в отдельный кластер и реклассификация части пикселей путем исключения из одного кластера и отнесения их в другой. Оценкой качества служит суммарная квадратичная ошибка. Улучшение качества разбиения изображения обеспечивается итеративным исполнением сочетания операций слияния и разделения кластеров пикселей, в частности сегментов изображения. Один из кластеров (сегментов) разделяется надвое и пара других несовпадающих с ним объединяется в один по критерию минимального приращения суммарной квадратичной ошибки.Результаты. Предложенный модифицированный метод Уорда применен в обработке полноразмерных изображений дистанционного зондирования Земли, взятых из базы данных Института обработки сигналов и изображений Южно-Калифорнийского университета. Сопоставлены результаты обработки в режимах чистой сегментации и кластеризации.Заключение. Предложенная модель кластеризации пикселей пригодна для скоростной обработки полноразмерных изображений. Кластеризация пикселей по сравнению с сегментацией изображений позволяет более детально определить как контуры объектов интереса, так и их внутреннюю структуру.</p></abstract><trans-abstract xml:lang="en"><p>Purpose of research is to apply the modified Ward method in high-speed processing of full-size images of Earth remote sensing.Methods. The classical Ward method is modified by dividing the computational process into three successive stages. At the first stage, a rough hierarchy of approximations is built. At the second stage, an intermediate improvement of the quality of the given partition is performed for a fixed number of colours. At the third stage, the obtained superpixels are clustered using the classical Ward method. The software-algorithmic toolkit consists of four operations on pixel clusters and image segments: merging a pair of clusters into one, dividing a cluster into two original ones, singling out a subset of pixels into a separate cluster and reclassifying some pixels by excluding them from one cluster and assigning them to another. The quality is assessed by the total squared error. Improving the image decomposition quality is ensured by iterative execution of a combination of merging and deviding pixel clusters, image segments, in particular. One of the clusters (segments) is devided in two and a couple of others non-coincident with it are combined into one according to the criterion of minimum increment of the total squared error.Results. The proposed modified Ward method is applied in the processing of full-size images of Earth remote sensing taken from the database of the USC Signal and Image Processing Institute. The results of processing in the modes of pure segmentation and clustering are compared.Conclusion. The proposed pixel clustering model is suitable for high-speed processing of full-size images. Pixel clustering in comparison with image segmentation makes it possible to define in more detail both the contours of objects of interest and their internal structure.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сегментация изображений</kwd><kwd>кластеризация пикселей</kwd><kwd>скоростная кластеризация</kwd><kwd>суперпиксели</kwd><kwd>иерархия приближений</kwd></kwd-group><kwd-group xml:lang="en"><kwd>image segmentation</kwd><kwd>pixel clusterization</kwd><kwd>high-speed clustering</kwd><kwd>superpixels</kwd><kwd>hierarchy of approximations</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">Ward J.H., Jr. Hierarchical grouping to optimize an objective function. J. Am. Stat. Assoc. 1963. 58(301): 236-244. http:/doi.org/10.1080/01621459.1963.10500845.</mixed-citation><mixed-citation xml:lang="en">Ward J.H., Jr. Hierarchical grouping to optimize an objective function. 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