Перегляд за Автор "Dovbysh, I. O."
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Документ Відкритий доступ Automation of thermographic diagnostic method of human organism pathologies(КПІ ім. Ігоря Сікорського, 2023) Muraviov, O. V.; Dovbysh, I. O.Документ Відкритий доступ Compensation of temperature influence to image quality of medical thermal imaging camera(КПІ ім. Ігоря Сікорського, 2024) Muraviov, O. V.; Dovbysh, I. O.Документ Відкритий доступ Complementary filter for UAV attitude estimation(КПІ ім. Ігоря Сікорського, 2024) Dovbysh, I. O.; Muraviov, O. V.This paper considers filtering techniques, used for unmanned aerial vehicles attitude estimation, a critical aspect of navigation and autonomy. The study compares traditional Kalman Filters with complementary filters, which use sensor fusion to adjust the measurements. The complementary filter structure, main equations, and principles are given in this paper.Документ Відкритий доступ Medical thermal imaging diagnostics: current problems and surgical application(КПІ ім. Ігоря Сікорського, 2024) Muraviov, O. V.; Dovbysh, I. O.Nowadays criteria of thermal imaging diagnostics for more than two hundred diseases and pathological conditions are developed and this list is constantly being replenished. One of the most important problems at cardiac surgical interventions is ischemic myocardial damage, since normal coronary perfusion is absent due to aorta clamping. For complete control over the temperature distribution using of infrared cameras is promising and innovative, that allows to get a highly informative image of temperature distribution on entire heart surface.Документ Відкритий доступ Medical thermal imaging diagnostics: current problems and surgical application(КПІ ім. Ігоря Сікорського, 2024) Muraviov, O. V.; Dovbysh, I. O.Документ Відкритий доступ Passive athermalization of infrared lenses(КПІ ім. Ігоря Сікорського, 2025-05-13) Muraviov, O. V.; Dovbysh, I. O.Infrared (IR) imaging systems are critical in fields such as surveillance, remote sensing, and scientific research, but they face unique challenges due to the temperature sensitivity of IR materials and high refractive indices of IR-transparent optics. Passive optical athermalization addresses these challenges by mitigating temperature-induced focus shifts without adding size, weight, or power burdens, unlike active thermal control methods. This paper reviews the fundamentals of passive athermalization, discussing the interplay between refractive index changes and mechanical expansion. Key IR materials - such as Germanium, Zinc Selenide, Zinc Sulfide, chalcogenide glasses, and fluorides - are examined for their thermal properties and suitability for athermal design. Strategies combining optical material selection with mechanical compensation are explored, emphasizing multi-element lens design and precision engineering. Recent advances, including novel chalcogenide glasses, IR-compatible polymers, and freeform optical surfaces, are highlighted as promising solutions for next-generation IR systems. Practical guidelines for material selection, mechanical integration, design optimization, and environmental resilience are presented to aid in developing compact, lightweight, and thermally stable IR imaging platforms.Документ Відкритий доступ Passive optical athermalization of a medical thermal imager optical system(КПІ ім. Ігоря Сікорського, 2025-05-13) Muraviov, O. V.; Dovbysh, I. O.Modern medical thermal imagers require precise, stable optical performance to detect subtle temperature variations critical for diagnosing inflammation, monitoring blood flow, and identifying early disease indicators. Maintaining high spatial and thermal resolution under varying operating temperatures presents significant design challenges, particularly due to the temperature sensitivity of optical materials and mechanical components. This article explores the principles and implementation of passive optical athermalization as an effective solution for medical thermal imagers. Unlike active systems that rely on mechanical adjustments, passive athermalization strategically combines optical materials with complementary thermo-optic and thermal expansion properties to maintain focus and image quality without external power or complex controls. Key aspects discussed include the selection of infrared materials such as germanium and chalcogenide glasses, design methodologies for multi-element optical systems, and optimization techniques using temperature-dependent modeling. Experimental results confirm that passive athermalized systems can maintain consistent focal position and image quality across clinical temperature ranges, ensuring reliable and accurate thermal diagnostics. This approach offers a robust, low-maintenance solution tailored for the stringent demands of medical environments.Документ Відкритий доступ Thermographic diagnostic of human organism pathologies(КПІ ім. Ігоря Сікорського, 2025-05-13) Muraviov, O. V.; Dovbysh, I. O.Medical thermography, the practice of acquiring and interpreting infrared images of the human body, offers a non-invasive, radiation-free method to detect temperature variations associated with underlying physiological processes. Historically used primarily for breast cancer screening, advancements in sensor technology, image processing, and standardized protocols have expanded its clinical utility to include vascular diseases, musculoskeletal disorders, and chronic wound management. Despite challenges related to environmental sensitivity, specificity, and operator dependence, thermography provides valuable early detection capabilities and cost-effective monitoring solutions. Emerging developments in artificial intelligence, multimodal imaging integration, and wearable technologies promise to further enhance diagnostic accuracy and broaden clinical applications. This article reviews the technical foundations, clinical applications, current limitations, and future directions of medical thermographic diagnostics, emphasizing its growing role in comprehensive patient care.