Title :
Dynamic optical tomography: resolution and contrast enhancement by frequency-filtering
Author :
Barbour, Randall L. ; Graber, Harry L. ; Pei, Yaling ; Feng-Bao Lin
Author_Institution :
Downstate Med. Center, State Univ. of New York, Brooklyn, NY, USA
Abstract :
We demonstrate the capacity to significantly enhance the resolution and contrast of internal structures imaged by dynamic optical tomography. We recognize that the presence of time-harmonic behavior (e.g., vasomotion), permits use of simple feature-extraction protocols capable of producing a high-contrast image. Results obtained from numerical simulation of a medium experiencing localized spatial harmonic behavior showed that target contrast could be improved by a factor of 40, accompanied by a marked improvement in resolution
Keywords :
biomedical imaging; blood vessels; feature extraction; image resolution; medical image processing; optical filters; optical tomography; contrast enhancement; dynamic optical tomography; feature-extraction protocols; frequency-filtering; high-contrast image; internal structures; localized spatial harmonic behavior; numerical simulation; resolution; target contrast; time-harmonic behavior; vasomotion; Absorption; Biomedical imaging; Biomedical optical imaging; Computational modeling; Frequency; Image analysis; Optical imaging; Optical scattering; Spatial resolution; Tomography;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.804250
