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Development of automated registration algorithms for subtraction radiography
Author(s) -
Ettinger G. J.,
Gordon G. G.,
Goodson J. M.,
Socransky S. S.,
Williams R.
Publication year - 1994
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/j.1600-051x.1994.tb01170.x
Subject(s) - superimposition , subtraction , radiography , computer vision , computer science , artificial intelligence , cementoenamel junction , computation , image warping , algorithm , identification (biology) , mathematics , medicine , orthodontics , molar , botany , arithmetic , biology , radiology
An algorithm is described which provides necessary information for automated registration and computation of alveolar height for subtraction radiographic analysis. This procedure involves identification of the cementoenamel junctions from radiographic images by incrementally comparing a characteristic image signature along computed tooth boundaries. The identification of these anatomically invariant structures provides information necessary to warp images and create automatic superimposition, correcting for geometric misalignment. The present report describes and demonstrates the feasibility of utilizing automated CEJ, edge finding and image warping algorithms to align automatically sequential radiographs and permit their subtraction.