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EN
Purpose: The problem of the numerical modeling of thermal processes proceeding in the non-homogeneous domain of the human finger is discussed. The domain considered constitutes the assembling of soft and bone tissues and the system of supplying blood vessels (arteries and veins). The mathematical description of the process analyzed corresponds to the so-called vascular models. Methods: At the stage of numerical modeling the algorithm being the composition of the boundary element method (BEM) and the finite difference method (FDM) is applied. Results: The algorithm presented allows one to determine the steady state temperature field in the finger domain in natural convection conditions. To verify the effectiveness and exactness of the method of the problem solution, the thermal imaging measurements of the finger surface temperature have been done. Conclusions: The compatibility of numerical and experimental results (the natural convection conditions) has proved to be quite satisfactory. It is possible to use the algorithm proposed for the modeling of thermal processes proceeding in the conditions of low or high ambient temperatures and the big values of heat transfer coefficients. The impact of protective clothing on the temperature field in the domain of the finger can also be analyzed.
2
Content available remote Zastosowanie kamery termowizyjnej w procesie badania prototypów urządzeń
PL
Artykuł przedstawia zagadnienia związane z metodami termowizyjnymi oraz prezentuje próby, jakie pracownicy Zakładu Użytkowania Paliw Instytutu Nafty i Gazu przeprowadzili podczas badań prototypów urządzeń, dążąc do zastąpienia metod konwencjonalnych pomiaru temperatury pomiarem promieniowania podczerwonego, z zastosowaniem kamery FLIR GF320. Przedstawiono wnioski z przeprowadzonych badań i zwrócono uwagę na problemy i zalety bezkontaktowego pomiaru temperatury, starając się odnieść go do konwencjonalnych metod znormalizowanych.
EN
The paper presents issues related to thermal imaging methods and presents attempts which the staff of the Department of Fuel Usage of the Oil and Gas Institute in Krakow carried out during tests of prototypes, whilst trying to replace the conventional method of temperature measuring by measurement in infrared spectrum, using camera FLIR GF320. The article presents conclusions of the tests and highlights the advantages and disadvantages of noncontact temperature measurement, trying to relate it to the conventional normative methods.
EN
The paper presents an algorithm enabling a fully automatic detection of characteristic areas on thermograms containing patients' faces in a front projection. A resolution of problems occurring at the segmentation of face images, such as a change of position, orientation and scale, has been proposed. In addition, attempts to eliminate the effect of the background and of disturbances caused by the haircut and the hairline were made. The algorithm may be used to detect selected points and areas of a face or as a preliminary component in the face recognition, as a development of optical analysis methods or in the quantitative analysis of face on thermograms.
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