Automatic analysis of landmarks in cephalograms

Kuo sheng Cheng, Yen ting Chen, Jia kuang Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A microcomputer system with a desktop scanner is employed for locating the landmarks of an X-ray cephalogram automatically. The digitized image of a cephalogram is processed to define a reference point for analysis and divided into several rectangular subimages (such as frontal, orbit, maxilla, mandible, etc.). These regions containing all the useful landmarks are then enhanced in a preprocessing stage. The pyramid method is used to reduce the resolution of image, and the edges are detected by appropriate edge detectors or the best-orientation edge detector. The curve of each edge is corrected elastically using prestored models. Finally, positions of landmarks are located immediately and the associated parameters are computed for diagnosis.

Original languageEnglish
Title of host publicationProceedings of the Annual Conference on Engineering in Medicine and Biology
PublisherPubl by IEEE
Pages338-339
Number of pages2
Editionpt 1
ISBN (Print)0780302168
Publication statusPublished - 1991 Dec 1
EventProceedings of the 13th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Orlando, FL, USA
Duration: 1991 Oct 311991 Nov 3

Publication series

NameProceedings of the Annual Conference on Engineering in Medicine and Biology
Numberpt 1
Volume13
ISSN (Print)0589-1019

Other

OtherProceedings of the 13th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CityOrlando, FL, USA
Period91-10-3191-11-03

Fingerprint

Maxilla
Microcomputers
Orbit
Mandible
X-Rays
Detectors
Orbits
X rays

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

Cite this

Cheng, K. S., Chen, Y. T., & Liu, J. K. (1991). Automatic analysis of landmarks in cephalograms. In Proceedings of the Annual Conference on Engineering in Medicine and Biology (pt 1 ed., pp. 338-339). (Proceedings of the Annual Conference on Engineering in Medicine and Biology; Vol. 13, No. pt 1). Publ by IEEE.
Cheng, Kuo sheng ; Chen, Yen ting ; Liu, Jia kuang. / Automatic analysis of landmarks in cephalograms. Proceedings of the Annual Conference on Engineering in Medicine and Biology. pt 1. ed. Publ by IEEE, 1991. pp. 338-339 (Proceedings of the Annual Conference on Engineering in Medicine and Biology; pt 1).
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Cheng, KS, Chen, YT & Liu, JK 1991, Automatic analysis of landmarks in cephalograms. in Proceedings of the Annual Conference on Engineering in Medicine and Biology. pt 1 edn, Proceedings of the Annual Conference on Engineering in Medicine and Biology, no. pt 1, vol. 13, Publ by IEEE, pp. 338-339, Proceedings of the 13th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Orlando, FL, USA, 91-10-31.

Automatic analysis of landmarks in cephalograms. / Cheng, Kuo sheng; Chen, Yen ting; Liu, Jia kuang.

Proceedings of the Annual Conference on Engineering in Medicine and Biology. pt 1. ed. Publ by IEEE, 1991. p. 338-339 (Proceedings of the Annual Conference on Engineering in Medicine and Biology; Vol. 13, No. pt 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - A microcomputer system with a desktop scanner is employed for locating the landmarks of an X-ray cephalogram automatically. The digitized image of a cephalogram is processed to define a reference point for analysis and divided into several rectangular subimages (such as frontal, orbit, maxilla, mandible, etc.). These regions containing all the useful landmarks are then enhanced in a preprocessing stage. The pyramid method is used to reduce the resolution of image, and the edges are detected by appropriate edge detectors or the best-orientation edge detector. The curve of each edge is corrected elastically using prestored models. Finally, positions of landmarks are located immediately and the associated parameters are computed for diagnosis.

AB - A microcomputer system with a desktop scanner is employed for locating the landmarks of an X-ray cephalogram automatically. The digitized image of a cephalogram is processed to define a reference point for analysis and divided into several rectangular subimages (such as frontal, orbit, maxilla, mandible, etc.). These regions containing all the useful landmarks are then enhanced in a preprocessing stage. The pyramid method is used to reduce the resolution of image, and the edges are detected by appropriate edge detectors or the best-orientation edge detector. The curve of each edge is corrected elastically using prestored models. Finally, positions of landmarks are located immediately and the associated parameters are computed for diagnosis.

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Cheng KS, Chen YT, Liu JK. Automatic analysis of landmarks in cephalograms. In Proceedings of the Annual Conference on Engineering in Medicine and Biology. pt 1 ed. Publ by IEEE. 1991. p. 338-339. (Proceedings of the Annual Conference on Engineering in Medicine and Biology; pt 1).