A contrast correction method for dental images based on histogram registration

dc.contributor.author	Οικονομόπουλος, Θεόδωρος Λ.	el
dc.contributor.author	Ασβεστάς, Παντελής Α.	el
dc.contributor.author	Ματσόπουλος, Γεώργιος Κ.	el
dc.contributor.author	Gröndahl, K.	en
dc.contributor.author	Gröndahl, H-G.	en
dc.date.accessioned	2015-02-09T09:46:02Z
dc.date.issued	2015-02-09
dc.identifier.uri	http://hdl.handle.net/11400/5903
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://www.ncbi.nlm.nih.gov/	en
dc.subject	Dental imaging
dc.subject	Registration
dc.subject	Οδοντιατρική απεικόνιση
dc.subject	Εγγραφή
dc.title	A contrast correction method for dental images based on histogram registration	en
heal.type	journalArticle
heal.generalDescription	Technical note	en
heal.classification	Medicine
heal.classification	Ιατρική
heal.classification	Biomedical engineering
heal.classification	Βιοϊατρική τεχνολογία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85014237
heal.classificationURI	N/A-Βιοϊατρική τεχνολογία
heal.identifier.secondary	doi: 10.1259/dmfr/57585722
heal.dateAvailable	10000-01-01
heal.language	en
heal.access	forever
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	en
heal.publicationDate	2010
heal.bibliographicCitation	Economopoulos, T., Asvestas, P., Matsopoulos, G., Gröndahl, K. & Gröndahl, H. (2010) A contrast correction method for dental images based on histogram registration. "Dentomaxillofacial Radiology". 39 (5). p. 300-313.	en
heal.abstract	Contrast correction is often required in digital subtraction radiography when comparing medical data acquired over different time periods owing to dissimilarities in the acquisition process. This paper focuses on dental radiographs and introduces a novel approach for correcting the contrast in dental image pairs. The proposed method modifies the subject images by applying typical registration techniques on their histograms. The proposed histogram registration method reshapes the histograms of the two subject images in such a way that these images are matched in terms of their contrast deviation. The method was extensively tested over 4 sets of dental images, consisting of 72 registered dental image pairs with unknown contrast differences as well as 20 dental pairs with known contrast differences. The proposed method was directly compared against the well-known histogram-based contrast correction method. The two methods were qualitatively and quantitatively evaluated for all 92 available dental image pairs. The two methods were compared in terms of the contrast root mean square difference between the reference image and the corrected image in each case. The obtained results were also verified statistically using appropriate t-tests in each set. The proposed method exhibited superior performance compared with the well-established method, in terms of the contrast root mean square difference between the reference and the corrected images. After suitable statistical analysis, it was deduced that the performance advantage of the proposed approach was statistically significant.	en
heal.publisher	British Institute of Radiology	en
heal.journalName	Dentomaxillofacial Radiology	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true