Geometric transformations in the shape analysis of selected biomedical structures

• Autorzy: Ogiela M.
• Języki publikacji: EN

Abstrakty

EN

The article presents an algorithm of the transformation straightening outer contours of objects, allowing to transform bilogical structures of interest, visible in medical images, from two-dimensional space of the image into two-dimensional graph, representing contours of the straightened object with its possible outer morphological changes, indicating the progress of pathological processes. The developed method is based on a sequence of geometric transformations of the analyzed objects in the image, and its operation was described in detail and illustrated by examples of transformation of main pancreatic ducts, appearing in X-ray images acquired by ERCP, as well as by graphs showing outer morphology of blood vessels in the fundus of the eye and morphology of renal sinuses from kidneys roengenograms. The proposed method is universal, and due to the fact that the transformation preserves and exposes pathologic morphological changes, such as abnormal lateral branches, local dilatations or projections it can also be used in the recognition and analysis of other structure images acquired by various techniques of computer tomography, e.g. celebral vessels, bile ducts, coronary vessels of fragments of gastroin-testinal tract. The graphs of the structures of interest obtained as a result of the transformation straightening outer contours of objects are a starting point for the recognition of morphological changes, important for diagnosis, using syntactic methods of pattern recognition.

Słowa kluczowe

EN

ERCP; image analysis; image processing; medical imaging; pattern recognition; X-ray images

PL

analiza obrazu; obraz rentgenowski; przetwarzanie obrazu; rozpoznawanie obrazu

• Wydawca: Instytut Telekomunikacji i Informatyki Uniwersytetu Technologiczno-Przyrodniczego w Bydgoszczy
• Czasopismo: Image Processing & Communications
• Rocznik: 1998
• Tom: Vol. 4, no 3-4
• Strony: 27--36
• Opis fizyczny: Bibliogr. 11 poz.,Fot., rys.,

Twórcy

autor

Ogiela M.

• AGH Technical University, Institute of Automatics, 30 Mickiewicza St, PL-30-059 Cracow, Poland