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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">pimi</journal-id><journal-title-group><journal-title xml:lang="ru">Приборы и методы измерений</journal-title><trans-title-group xml:lang="en"><trans-title>Devices and Methods of Measurements</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-9506</issn><issn pub-type="epub">2414-0473</issn><publisher><publisher-name>BNTU</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21122/2220-9506-2017-8-3-271-278</article-id><article-id custom-type="elpub" pub-id-type="custom">pimi-333</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>Методы измерений, контроля, диагностики</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Methods of measurements, monitoring, diagnostics</subject></subj-group></article-categories><title-group><article-title>ИССЛЕДОВАНИЕ ДИНАМИЧЕСКОГО ДИАПАЗОНА ЦИФРОВОЙ КАМЕРЫ НА ОСНОВЕ ТЕХНОЛОГИЙ ОБРАБОТКИ ЦИФРОВЫХ ИЗОБРАЖЕНИЙ</article-title><trans-title-group xml:lang="en"><trans-title>RESEARCH OF DIGITAL CAMERA DYNAMIC RANGE ON THE IMAGING PROCESSING BASIS</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>Сутковский</surname><given-names>М.</given-names></name><name name-style="western" xml:lang="en"><surname>Sutkowski</surname><given-names>M</given-names></name></name-alternatives><bio xml:lang="ru"><p>Институт микроэлектроники и оптоэлектроники </p><p>ул. Нововейская 15/19, Варшава 00-665</p></bio><bio xml:lang="en"><p>Institute of Microelectronics and Optoelectronics</p><p>15/19 Nowowiejska Str., Warsaw 00-665</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>Савкова</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Saukova</surname><given-names>Ya. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адрес для переписки: Савкова Е.Н. – Белорусский национальный технический университет, пр. Независимости, 65, г. Минск 220013,   e-mail: evgeniya-savkova@yandex.ru</p></bio><bio xml:lang="en"><p>Address for correspondence: Saukova Ya. – Belarusian National Technical University, Nezavisimosty Ave., 65, Minsk 220013, Belarus   e-mail: evgeniya-savkova@yandex.ru</p></bio><email xlink:type="simple">savkova@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Варшавский политехнический университет</institution><country>Польша</country></aff><aff xml:lang="en"><institution>Warsaw University of Technology</institution><country>Poland</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>27</day><month>09</month><year>2017</year></pub-date><volume>8</volume><issue>3</issue><fpage>271</fpage><lpage>278</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сутковский М., Савкова Е.Н., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Сутковский М., Савкова Е.Н.</copyright-holder><copyright-holder xml:lang="en">Sutkowski M., Saukova Y.N.</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://pimi.bntu.by/jour/article/view/333">https://pimi.bntu.by/jour/article/view/333</self-uri><abstract><p>Цифровые изображения позволяют определять фотометрические и колориметрические свойства объектов при условии валидации всех элементов измерительного канала (цифровой камеры, программного обеспечения, дисплея) и решения проблемы ограничения их динамических диапазонов. Целью работы являлось исследование динамического диапазона цифровой камеры для ее дальнейшего использования в фотометрических и колориметрических измерениях.</p><p>Лаборатория фотоники в Институте микроэлектроники и оптоэлектроники (Варшавский технический университет, Польша) проводила сличительный эксперимент для определения порога чувствительности, линейности и диапазона применения цифровой камеры. Цветовые мишени были созданы на дисплее в виде аттестованных цветовых однородных полей и регистрировались с помощью цифровой камеры с пошагово увеличивающимся временем экспозиции, а затем осуществлялась обработка изображений и калибровка камеры в красном, зеленом и синем цветовых каналах для получения калибровочных зависимостей. Авторами предложен метод расширения динамического диапазона цифровой камеры для красного, зеленого и синего цветовых каналов интенсивностей посредством сопряжения градуировочных зависимостей и определения истинной яркости точки на объекте расчетным путем.</p><p>Полученные калибровочные зависимости (триады) имели форму петли гистерезиса и позволили расчетным путем расширить динамический диапазон. Эксперименты показали, что точность данного метода составляет ± 3–5 %. </p></abstract><trans-abstract xml:lang="en"><p>Digital images provide to determine photometric and colorimetric properties of objects subject to validation all elements of a measuring channel (digital camera, software, display) and solve the problem of their limited dynamic ranges. The aim of the study was to explore the dynamic range of a digital camera for use in photometric and colorimetric measurements.</p><p>The Laboratory of Photonics at the Institute of Microelectronics and Optoelectronics (Warsaw Technical University, Poland) conducted a comparative experiment to determine the threshold of sensitivity, linearity and range of application the digital camera. Color target sets with certified brightness and chromaticity were created at the terminals and recorded with a digital camera with different exposure times. The authors propose a method to extend the dynamic range of a digital camera for red, green and blue color channel of intensities by pairing the calibration dependencies, and determine the true brightness and color of a point on the object by calculation.</p><p>Calibration dependencies (triads) of digital camera for red, green and blue color channels intensities were constructed. These dependences allow determining lower and upper bounds of the dynamic range. Each triad has a form of the hysteresis loop. The experiment showed that the accuracy of this method is ± 3–5 %. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>цифровая камера</kwd><kwd>диапазон</kwd><kwd>обработка изображений</kwd></kwd-group><kwd-group xml:lang="en"><kwd>digital camera</kwd><kwd>dynamic range</kwd><kwd>imaging</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 P. Working with digital cameras: lessons learned operator skills. Moscow, Mir Publ., 2001, 301 p. (in Russian).</mixed-citation><mixed-citation xml:lang="en">Ward P. Working with digital cameras: lessons learned operator skills. Moscow, Mir Publ., 2001, 301 p. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Lynch R. 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