- Tytuł:
- Using active models for finding landmarks
- Autorzy:
-
Kowalski, P.
Tomaka, A. - Powiązania:
- https://bibliotekanauki.pl/articles/333734.pdf
- Data publikacji:
- 2005
- Wydawca:
- Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
- Tematy:
-
wygląd aktywnych modeli
punkty orientacyjne
zdjęcia rentgenowskie
czaszka
żuchwa
active appearance models
landmarks
X-ray images
skull
mandible - Opis:
- The paper presents the results of the experiments in using the active appearance models (AAM) to finding landmarks in the x-ray images of skull (especially of mandible). The landmark pointing is time-consuming in orthodontic analysis. It is useful to initially point the landmarks automatically, to help a physician in his or her work. Because the landmark are pointed not only by local features, but also by geometrical structure of skull, the model have to represent not only the local features (pixels in the image), but also the geometrical constraints. The one of many possible approaches is the active appearance model. The active appearance model was developed from the active shape models, and consists of the model of the shape and the model of appearance (texture). The model is active, that means the model fits to the object in the image. The main principle of the active models is to use two energies - internal energy represents limits of the models (shape, contour, texture), and the external energy represents the fitting the model to the image.
- Źródło:
-
Journal of Medical Informatics & Technologies; 2005, 9; 225-231
1642-6037 - Pojawia się w:
- Journal of Medical Informatics & Technologies
- Dostawca treści:
- Biblioteka Nauki
Artykuł