Title of article - Evaluation of a Mathematical Model for Digital Image Enhancement.
Abstract
The purpose of this study is to compare the detected number of holes on a stepwedge on images resulting from the application of the 5th degree polynomial model compared to the images resulting from the application of linear enhancement. Material and Methods : A 10-step aluminum step wedge with holes randomly drilled on each step was exposed with three different kVp and five exposure times per kVp on a Schick33(®) sensor. The images were enhanced by brightness/contrast adjustment, histogram equalization and with the 5th degree polynomial model and compared to the original non-enhanced images by six observers in two separate readings. Results : There was no significant difference between the readers and between the first and second reading. There was a significant three-factor interaction among Method, Exposure time, and kVp in detecting holes. The overall pattern was: "Poly" results in the highest counts, "Original" in the lowest counts, with "B/C" and "Equalized" intermediate. Conclusion : The 5th degree polynomial model showed more holes when compared to the other modalities.
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The University of Texas Health Science Center, San Antonio, United States.
Details of Journal for Evaluation of a Mathematical Model for Digital Image Enhancement.
Journal Title - The open dentistry journal
ISSN - 1874-2106
Volume - 9
Issue - 0
Publish date - 2015-
Language - eng
Country - Netherlands
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