Masters Theses
Abstract
"A contrast enhancement algorithm is developed for digital mammograms aiming to assist radiologists in discerning early breast cancer easily. The algorithm is based on a Laplacian pyramid framework image processing technique. The mammogram is decomposed into three frequency sub-bands, low, mid, and high frequency sub-band images. The lower sub-band image contains very fine details and higher level contains coarser features. In this method contrast enhancement is achieved from high and mid sub-bands by decomposing the image based on multi-scale Laplacian pyramid and enhance contrast by image processing. Several mapping functions are applied on sub-band images based on experimental analysis. After modifying sub-band images using mapping functions, the final image is derived from reconstruction of the Laplacian images from lower resolution level to upper resolution level. To demonstrate the effectiveness of the algorithm, two mammogram images are analyzed. To validate the algorithm, quantitative measurements are performed. Several existing contrast enhancement techniques are compared with the developed algorithm. Experimental results and quantitative evaluation prove that the proposed algorithm offers improved contrast of digital mammograms"--Abstract, page iv.
Advisor(s)
Lee, Hyoung-Koo
Committee Member(s)
Usman, Shoaib
Kumar, A. S. (Arvind S.)
Moss, Randy Hays, 1953-
Department(s)
Nuclear Engineering and Radiation Science
Degree Name
M.S. in Nuclear Engineering
Sponsor(s)
Nuclear Energy Research Initiative (U.S.)
Publisher
Missouri University of Science and Technology
Publication Date
Fall 2011
Pagination
xi, 49 pages
Note about bibliography
Includes bibliographical references (page 37).
Rights
© 2011 Muhammad Imran Khan Abir, All rights reserved.
Document Type
Thesis - Open Access
File Type
text
Language
English
Subject Headings
Breast -- RadiographyContrast media (Diagnostic imaging)Radiography, Medical -- Digital techniques
Thesis Number
T 9911
Print OCLC #
794671402
Electronic OCLC #
763515749
Recommended Citation
Abir, Muhammad Imran Khan, "Contrast enhancement of digital mammography based on multi-scale analysis" (2011). Masters Theses. 5025.
https://scholarsmine.mst.edu/masters_theses/5025