Application of mathematical morphology to the extraction of craniofacial landmarks

Author

Cardillo, J. ; Sid-Ahmed, M.A.

Author_Institution

Dept. of Electr. Eng., Windsor Univ., Ont., Canada

fYear

1991

fDate

9-10 May 1991

Firstpage

725

Abstract

An algorithm has been developed to extract craniofacial landmarks from skull X-rays. The locations of these landmarks are used by orthodontists in the diagnosis of anomalies and in the monitoring of treatments. The shape recognition algorithm is based on gray-scale mathematical morphology. A statistical approach was used to overcome subtle differences in skeletal topographies. Decomposition was used to desensitize the algorithm to size differences. A method for minimizing the search windows is presented. A system was trained to locate 20 landmarks. Preliminary tests on 30 X-rays showed a 80% recognition rate

Keywords

computerised pattern recognition; computerised picture processing; diagnostic radiography; medical diagnostic computing; anomalies diagnosis; craniofacial landmarks; decomposition; gray scale; mathematical morphology; orthodontists; recognition rate; search windows; shape recognition algorithm; skeletal topographies; skull X-rays; statistical approach; treatment monitoring; Graphics; Monitoring; Morphological operations; Robustness; Shape; Skull; Surface morphology; Surface topography; Testing; X-rays;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Computers and Signal Processing, 1991., IEEE Pacific Rim Conference on

Conference_Location

Victoria, BC

Print_ISBN

0-87942-638-1

Type

conf

DOI

10.1109/PACRIM.1991.160842

Filename

160842