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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.2024-8-4-12</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-2249</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>ЛИНЕЙНЫЕ И УГЛОВЫЕ ИЗМЕРЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LINEAR AND ANGULAR MEASUREMENTS</subject></subj-group></article-categories><title-group><article-title>Уменьшение погрешности нелинейности компьютеризированного контактного интерферометра путём цифровой обработки изображения шкалы</article-title><trans-title-group xml:lang="en"><trans-title>Reduction of the nonlinearity error of a computerized contact interferometer using digital scale image processing</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1752-0961</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Емельянов</surname><given-names>П. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Emelianov</surname><given-names>P. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петр Николаевич Емельянов</p><p>Москва</p></bio><bio xml:lang="en"><p>Moscow </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>Забелин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zabelin</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Владимирович Забелин</p><p>Москва</p></bio><bio xml:lang="en"><p>Moscow </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1041-4218</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мастеренко</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Masterenko</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дмитрий Александрович Мастеренко</p><p>Москва</p></bio><bio xml:lang="en"><p>Moscow </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8532-3607</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Телешевский</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Teleshevskiy</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Ильич Телешевский</p><p>Москва</p></bio><bio xml:lang="en"><p>Moscow </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный технологический университет «СТАНКИН»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University of Technology “STANKIN”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>17</day><month>10</month><year>2024</year></pub-date><volume>73</volume><issue>8</issue><fpage>4</fpage><lpage>12</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/2249">https://www.izmt.ru/jour/article/view/2249</self-uri><abstract><p>Описан компьютеризированный контактный (вертикальный) интерферометр, разработанный в Московском государственном технологическом университете «СТАНКИН» и основанный на интерферометре Уверского. Компьютеризованный интерферометр с разрешающей способностью 1 нм предназначен для автоматизированной поверки образцовых концевых мер длины 2, 3 и 4-го разрядов в диапазоне размеров 0,1–100 мм. Компьютеризация интерферометра Уверского позволяет значительно повысить производительность поверки, но при этом вносит дополнительную погрешность измерения, связанную с аберрациями оптической системы используемой цифровой видеокамеры. Предложены метод и алгоритм программной коррекции данной погрешности. Данная коррекция реализуется в процессе компьютерной обработки цифрового изображения, полученного от видеокамеры. Метод основан на приближении экспериментальных данных полиномами одной переменной различных степеней. Экспериментально подтверждена эффективность метода применительно к компьютеризированному контактному интерферометру Уверского. К преимуществам метода можно отнести простоту реализации в виде компьютерной программы и возможность оперативно масштабировать одномерные алгоритмы и программы для полиномов двух и трёх переменных. Результаты работы полезны при усовершенствовании нацеленного на повышение точности измерений программного обеспечения компьютеризированных интерферометров и других оптико-механических приборов.</p></abstract><trans-abstract xml:lang="en"><p>A computerized contact (vertical) interferometer developed at the Moscow State University of Technology “STANKIN” and based on the Uversky interferometer is described. The computerized interferometer with a resolution of 1 nm is designed for automated calibration of gauge blocks of 0, 1, 2 ISO tolerance grades with 0.1–100 mm nominal length range. Computerization of the Uversky interferometer significantly increases the calibration procedure efficiency, but at the same time causes an additional measurement error due to digital camera aberrations. A method and algorithm for computer aided correction of this error is proposed. The correction is provided by digital processing of the image from the video camera. The method is based on approximation of experimental data by polynomials of one variable of various degrees.</p><p>It experimentally confirms the effectiveness of the method by its application to the computerized Uversky contact interferometer. The advantages of the method include ease of implementation in the form of a computer program and the ability to quickly transform one-dimensional algorithms and programs for polynomials of two or three variables. The results of the proposed work are useful in improving the accuracy of measurement software for computerized interferometers and other optical mechanical measuring devices.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>контактный интерферометр</kwd><kwd>концевые меры длины</kwd><kwd>нелинейность шкалы</kwd><kwd>компьютерная обработка изображений</kwd><kwd>разложение по ортогональным полиномам</kwd></kwd-group><kwd-group xml:lang="en"><kwd>contact white light interferometer</kwd><kwd>gauge blocks</kwd><kwd>measurement precision</kwd><kwd>non-linearity of scale</kwd><kwd>computer image processing</kwd><kwd>orthogonal polynomial expansion</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Министерства науки и высшего образования Российской Федерации (проект FSFS-2021-0003).</funding-statement><funding-statement xml:lang="en">The work was supported by the Ministry of Science and Higher Education of the Russian Federation (project no. 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