Temat: analiza 3D - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: 3D head surface scanning techniques for orthodontics
Autorzy:: Tomaka, A.
Luchowski, L.
Skabek, K.
Tarnowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/333842.pdf
Data publikacji:: 2005
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: skanowanie powierzchni 3D
analiza cech twarzy
analiza asymetrii
3D surface scanning
facial features analysis
asymmetry analysis
Opis:: The accuracy of the Minolta 9i 3D laser scanner is evaluated and conditions are defined for its usability in orthodontics. Experiments are described which helped determine optimal scanning conditions such as beam power, patient positioning, the number of scans per examination, and viewpoint selection.
Źródło:: Journal of Medical Informatics & Technologies; 2005, 9; 123-130
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The application of the 3D surface scanning in the facial features analysis
Autorzy:: Tomaka, A.
Liśniewska-Machorowska, B.
Powiązania:: https://bibliotekanauki.pl/articles/333736.pdf
Data publikacji:: 2005
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: skanowanie powierzchni 3D
analiza cech twarzy
3D surface scanning
facial features analysis
Opis:: Facial feature analysis is a basis examination in everyday orthodontics practice. Traditionally it was carried out using the patients photographs and callipers. Although the devices for scanning 3D surfaces have been developed since last decade of XX century their use in supporting orthodontics diagnosis have been limited due to availability and prices. The present work examine the possibility of usage of the 3D surface scanning for orthodontics purposes using professional graphic tool RapidForm. The landmarks-based analysis of facial features and asymmetry of soft tissue is described. Possibilities of surface-based analysis are also illustrated and their limitations are discussed.
Źródło:: Journal of Medical Informatics & Technologies; 2005, 9; 233-240
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: 3D medical imaging: from 2D images to 3D models
Autorzy:: Mavromatis, S.
Sequeira, J.
Powiązania:: https://bibliotekanauki.pl/articles/332849.pdf
Data publikacji:: 2002
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: obrazowanie medyczne w 3D
modelowanie geometryczne
analiza obrazu
3D medical imaging
geometrical modeling
image analysis
Opis:: Up to the end of the 70's, Medical Imaging was mainly related to the study of planar data sets resulting from direct physical acquisitions (e.g. X-Ray radiographs). Then, the development of inverse methods associated with the increasing power of computers enabled the visualization and the analysis of human being cross-section images (e.g. CT scans, MRI): these images are the result of mathematical processes and do not present direct physical acquisitions. The visualization of these data in three-dimensional space was made possible by the use of a set of parallel cross-sections: the result was spectacular but not sufficient for further development, especially in the case of clinical applications. Such applications need the characterization of a geometrical model, e.g. for the capture of sophisticated geometrical parameters or to provide a mathematical support to mechanical simulations.
Źródło:: Journal of Medical Informatics & Technologies; 2002, 3; IP7-14
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: 3D modelling and segmentation with discrete curvatures
Autorzy:: Bac, A.
Daniel, M.
Maltret, J. - L.
Powiązania:: https://bibliotekanauki.pl/articles/333880.pdf
Data publikacji:: 2005
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: powierzchnie wielościenne
krzywe dyskretne
analiza kształtu
modelowanie 3D
segmentacja
polyhedral surfaces
discrete curvatures
shape analysis
3D modelling
segmentation
Opis:: Recent concepts of discrete curvatures are very important for Medical and Computer Aided Geometric Design applications. A first reason is the opportunity to handle a discretisation of a continuous object, with a free choice of the discretisation. A second and most important reason is the possibility to define second-order estimators for discrete objects in order to estimate local shapes and manipulate discrete objects. There is an increasing need to handle polyhedral objects and clouds of points for which only a discrete approach makes sense. These sets of points, once structured (in general meshed with simplexes for surfaces or volumes), can be analysed using these second-order estimators. After a general presentation of the problem, a first approach based on angular defect, is studied. Then, a local approximation approach (mostly by quadrics) is presented. Different possible applications of these techniques are suggested, including the analysis of 2D or 3D images, decimation, segmentation... We finally emphasise different artefacts encountered in the discrete case.
Źródło:: Journal of Medical Informatics & Technologies; 2005, 9; 13-24
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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