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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">gtcrust</journal-id><journal-title-group><journal-title xml:lang="ru">Геодинамика и тектонофизика</journal-title><trans-title-group xml:lang="en"><trans-title>Geodynamics &amp; Tectonophysics</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2078-502X</issn><publisher><publisher-name>Institute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.5800/GT-2025-16-5-0856</article-id><article-id custom-type="edn" pub-id-type="custom">YABBVX</article-id><article-id custom-type="elpub" pub-id-type="custom">gtcrust-2117</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>СОВРЕМЕННАЯ ГЕОДИНАМИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RECENT GEODYNAMICS</subject></subj-group></article-categories><title-group><article-title>ПРИМЕНЕНИЕ НЕЙРОННОЙ СЕТИ ДЛЯ ОПРЕДЕЛЕНИЯ РАЗМЕРА КРУПНООБЛОМОЧНОГО МАТЕРИАЛА В СЕЛЕВЫХ ОТЛОЖЕНИЯХ ЮЖНОГО ПРИБАЙКАЛЬЯ</article-title><trans-title-group xml:lang="en"><trans-title>NEURAL NETWORK-BASED DETERMINATION OF COARSE-GRAINED MATERIAL SIZE IN DEBRIS-FLOW DEPOSITS OF THE SOUTHERN BAIKAL REGION</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>Юрьев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yuriev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>664033, Иркутск, ул. Лермонтова, 128; 664033, Иркутск, ул. Улан-Баторская, 1</p></bio><bio xml:lang="en"><p>Anton A. Yuriev</p><p>128 Lermontov St, Irkutsk 664033; 1 Ulan-Batorskaya St, Irkutsk 664033</p></bio><email xlink:type="simple">antonyrevgeo@mail.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>Рыбченко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rybchenko</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>664033, Иркутск, ул. Лермонтова, 128; 664033, Иркутск, ул. Улан-Баторская, 1</p></bio><bio xml:lang="en"><p>128 Lermontov St, Irkutsk 664033; 1 Ulan-Batorskaya St, Irkutsk 664033</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кичигина</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kichigina</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>664033, Иркутск, ул. Лермонтова, 128; 664033, Иркутск, ул. Улан-Баторская, 1</p></bio><bio xml:lang="en"><p>128 Lermontov St, Irkutsk 664033; 1 Ulan-Batorskaya St, Irkutsk 664033</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт земной коры СО РАН; Институт географии им. В.Б. Сочавы СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of the Earth’s Crust, Siberian Branch of the Russian Academy of Sciences; Sochava Institute of Geography, Siberian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>17</day><month>10</month><year>2025</year></pub-date><volume>16</volume><issue>5</issue><fpage>856</fpage><lpage>856</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Юрьев А.А., Рыбченко А.А., Кичигина Н.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Юрьев А.А., Рыбченко А.А., Кичигина Н.В.</copyright-holder><copyright-holder xml:lang="en">Yuriev A.A., Rybchenko A.A., Kichigina N.V.</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://www.gt-crust.ru/jour/article/view/2117">https://www.gt-crust.ru/jour/article/view/2117</self-uri><abstract><p>Работа посвящена автоматизации оценки размерной структуры крупнообломочного материала на ортофотопланах, полученных с беспилотных летательных аппаратов. На материале десяти селевых бассейнов Прибайкалья использованы ортомозаики с наземным пространственным разрешением  </p><p>(GSD) ~2–4 см; аннотированная выборка подготовлена в SedimentAlyzer. Алгоритм объединяет определение объектов методами компьютерного зрения и последующую классификацию и оценку диаметра Ферре сверточными нейронными сетями (CNN; архитектура: остаточная сверточная сеть (ResNet) и плотносвязанная сверточная сеть (DenseNet), перенос обучения). Вывод выполняется по перекрывающимся ячейкам; предопределения объединяются (NMS/WBF), вероятности калибруются, применяются фильтры по форме. Реализация интегрирована в SedimentAlyzer. Программа зарегистрирована (свидетельство о государственной регистрации программы для ЭВМ № 2025616929). На удержанных участках достигнута F1-мера = 0.84±0.03; средняя абсолютная ошибка по Ферре = 4.8 см; RMSE=7.9 см; корреляция с полевыми измерениями R=0.89; совпадение размерных классов по ГОСТ – 82 % в среднем по бассейнам. В сравнении с ручным дешифрированием трудозатраты сокращаются в 6–8 раз. Типичные закономерности включают доминирование гальки 10–100 мм (≈30–40 %) и переменную долю валунов &gt;200 мм (1–13 % с максимумами в малых притоках); в транзитных зонах доля очень крупных обломков выше, чем в аккумуляционных. Подход обеспечивает воспроизводимое картирование фракций и пригоден для регулярного мониторинга селевых конусов и поддержки инженерных решений.</p></abstract><trans-abstract xml:lang="en"><p>This study is devoted to automation of the assessment of the dimensional structure of coarse-grained material on orthophotomaps obtained from unmanned aerial vehicles (UAVs). Orthomosaics with a Ground Sample Distance (GSD) of ~2–4 cm were used on the material of ten debris-flow deposits of the Baikal region; an annotated dataset was prepared in SedimentAlyzer. The algorithm combines object detection by computer vision methods with subsequent classification and Feret diameter estimation using convolutional neural networks (CNN; architectures: residual convolutional network (ResNet) and densely connected convolutional network (DenseNet), transfer learning). The output is performed on overlapping cells; preliminary determinations are merged (non-maximum suppression, NMS / weighted boxes fusion, WBF), probabilities are calibrated (temperature scaling) and shape filters are applied. The implementation is integrated into SedimentAlyzer. The software is registered (state registration certificate for computer program No. 2025616929). The following values were achieved in the retained areas: F1-score = 0.84±0.03; mean absolute Feret error = 4.8 cm; RMSE=7.9 cm; correlation with field measurements R=0.89; agreement with GOST size classes averaged 82 % across basins. Compared to manual interpretation, labor time is reduced by a factor of 6–8. Typical patterns include dominance of clasts 10–100 cm (≈30–40 %) and a variable share of boulders &gt;200 cm (1–13 % with maxima in small tributaries); in transit zones, the proportion of very large fragments is higher than in accumulation zones. The approach enables reproducible mapping of fractions and is suitable for regular monitoring of debris-flow cones and support of engineering decisions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сверточные нейронные сети</kwd><kwd>селевые отложения</kwd><kwd>беспилотные летательные аппараты</kwd><kwd>компьютерное зрение</kwd><kwd>диаметр Ферре</kwd><kwd>SedimentAlyzer</kwd><kwd>обучение с переносом</kwd></kwd-group><kwd-group xml:lang="en"><kwd>convolutional neural networks</kwd><kwd>debris-flow deposits</kwd><kwd>unmanned aerial vehicles</kwd><kwd>computer vision</kwd><kwd>Feret diameter</kwd><kwd>SedimentAlyzer</kwd><kwd>transfer learning</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование проведено при поддержке РНФ (проект № 24-27-20059).</funding-statement><funding-statement xml:lang="en">The study was supported by the RSF (project No. 24-27-20059).</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">Агафонов Б.П., Макаров С.А. 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