NDLI: Image Registration Using Template Matching and Similarity Measures for Dental Radiograph

Content Provider	IEEE Xplore Digital Library
Author	Norollah, M. Pourghassem, H. Mahdavi-Nasab, H.
Copyright Year	2012
Abstract	Dental radiographs are used to diagnose and treat dental diseases. For accurate diagnosis, geometrical registration of radiographs is required. In order to compare two dental radiographs prepared from the same part of teeth in different time intervals. It is necessary to register the locality of images, so that by removing deviations between the two images and finding a mapping function, local transitions, rotational and scale differences and even visual differences are corrected. In this paper, an X-ray dental image registration algorithm based on template matching and similarity measure is proposed. The proposed registration process is carried out in three stages. The first stage includes the automatic selection of a set of control points of the sensed image based on its features. In the second stage, displacement vectors of these control points are determined by comparing a template and normalized cross correlation (NCC) as a similarity measure. Full displacement vector field is then performed using these displacement vectors and the affine transformation function, and the final correction is carried out by changing the geometric shape of the reference image. The obtained results of the proposed algorithm show effectiveness of this algorithm in dental radiograph image registration.
Starting Page	331
Ending Page	335
File Size	216449
Page Count	5
File Format	PDF
ISBN	9781467329811
e-ISBN	9780769548500
DOI	10.1109/CICN.2012.129
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-11-03
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radiography Dental radiograph Image registration Correlation Mapping function Similarity measure Size measurement Entropy Vectors Dentistry Template matching
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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