An image processing system for locating craniofacial landmarks

Journal Article · Wed Jun 01 04:00:00 EDT 1994 · IEEE Transactions on Medical Imaging (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/42.293920· OSTI ID:7273893

Cardillo, J; Sid-Ahmed, M A ^[1]

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1. Univ. of Windsor, Ontario (Canada). Dept. of Electrical Engineering

A new automatic target recognition algorithm has been developed to extract craniofacial landmarks from lateral skull x-rays (cephalograms). The locations of these landmarks are used by orthodontists in what is referred to as a cephalometric evaluation. The evaluation assists in the diagnosis of anomalies and in the monitoring of treatments. The algorithm is based on gray-scale mathematical morphology. A statistical approach to training was used to overcome subtle differences in skeletal topographies. Decomposition was used to desensitize the algorithm to size differences. A system was trained to locate 20 landmarks. Tests on 40 x-rays showed an 85% recognition rate on average.

• OSTI ID: 7273893
• Journal Information: IEEE Transactions on Medical Imaging (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Medical Imaging (Institute of Electrical and Electronics Engineers); (United States) Vol. 13:2; ISSN 0278-0062; ISSN ITMID4
• Country of Publication: United States
• Language: English

Related Subjects

550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ALGORITHMS
BIOMEDICAL RADIOGRAPHY
BODY
DENTISTRY
DIAGNOSTIC TECHNIQUES
IMAGE PROCESSING
MATHEMATICAL LOGIC
MEDICINE
NUCLEAR MEDICINE
ORGANS
PROCESSING
RADIOLOGY
SKELETON
SKULL