Feb 25, 2006 - Viewfinder functionality was added to CameraBox.
July 24, 2005AHDRIA's 1st birthday!
July 24, 2005 A new AHDRIA and AHDRIC were released. AHDRIC is now even easier to use--the ExposureInfo.txt file AHDRIA generates can simply be dropped onto AHDRIC and it'll take care of the rest.
I am a PhD student* graduate of the University of HoustonComputer Science Department's Computational Biomedicine Lab. My general field of study is computer vision (mainly with respect to medical imaging), but specific applications include the use of intravascular ultrasound for the detection of vulnerable atherosclerotic plaque (i.e., for the prevention of heart disease) and the reconstruction of neuron morphology from confocal microscope images. I have also published papers relating to high dynamic range imaging and seismic data analysis. A potentially up-to-date publications list is below.
My "hobby" fields include high dynamic range imaging, stereoscopy, virtual camera motion control, image processing, topographical visualization, raytracing, L-systems, and music (including music typesetting).
My Erdös number is 5.
* There are no conditions to which a man cannot become used, especially if he sees that all around him are living the same way. --Tolstoy
A research scientist with the University of Arizona Computer Science Department, though I do research at the University of Houston Computer Science Department.
An exercise guru, though I do a lot of running around.
Publications Last updated December 2006
Refereed Journal Publications
S.M. O'Malley, J. Granada, S. Carlier, M. Naghavi, and I.A. Kakadiaris. Image-based gating of intravascular ultrasound pullback sequences, IEEE T Inf Technol B, 12(3), May 2008.
M. Vavuranakis, I.A. Kakadiaris, S.M. O'Malley, T.G. Papaioannou, E.A. Sanidas, M. Naghavi, S. Carlier, D. Tousoulis, C. Stefanadis. A new method for assessment of plaque vulnerability based on vasa vasorum imaging, by using contrast enhanced intravascular ultrasound and differential image analysis, International Journal of Cardiology, 2007. (In press)
M. Vavuranakis, T.G. Papaioannou, I.A. Kakadiaris, S.M. O'Malley, M. Naghavi, K. Filis, E.A. Sanidas, A. Papalois, I. Stamatopoulos, C. Stefanadis. Detection of perivascular blood flow in vivo by contrast-enhanced intracoronary ultrasonography and image analysis: An animal study, Clinical & Experimental Pharmacology & Physiology, (34):1319-1323, 2007.
M. Vavuranakis, C. Stefanadis, I.A. Kakadiaris, S.M. O'Malley, S. Vaina, M. Drakopoulou, I. Mitropoulos, S. Carlier, and M. Naghavi, Detection of luminal-intimal border and coronary wall enhancement in intravascular ultrasound imaging after injection of microbubbles and simultaneous sonication with transthoracic echocardiography, Circulation, 112(1):e1-e2, July 2005.
S. Carlier, I.A. Kakadiaris, N. Dib, M. Vavuranakis, S.M. O'Malley, K. Gul, C.J. Hartley, R.W. Metcalfe, R. Mehran, C. Stefanadis, E. Falk, G. Stone, M. Leon, and M. Naghavi, Vasa vasorum imaging: A new window to the clinical detection of vulnerable atherosclerotic plaques, Current Atherosclerosis Reports, 7(2):164-169, March 2005.
Refereed Conference Publications
S.M. O'Malley, M. Naghavi, and I.A. Kakadiaris, One-class acoustic characterization applied to blood detection in IVUS, in Proceedings of the 10th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI), Brisbane, Australia, October 2007.
I. Kakadiaris, S. O'Malley, M. Vavuranakis, S. Carlier, C. Hartley, R. Metcalfe, R. Mehran, and M. Naghavi, Intravascular ultrasound-based imaging of vasa vasorum for the detection of vulnerable atherosclerotic plaque, Journal of the American College of Cardiology, 47(4 suppl. 1):264A, February 2006.
S.G. Carlier, E. Falk, L. Drouet, M. Bonneau, B. Gerber, S. O'Malley, I. Kakadiaris, and M. Naghavi, In vivo vasa vasorum density evaluation via intravascular ultrasound: Validation in a swine atherosclerotic model, in World Congress of Cardiology, 2006.
M. Vavuranakis, T.G. Papaioannou, I. Kakadiaris, S. O'Malley, E.A. Sanidas, M. Naghavi, S. Carlier, and C. Stefanadis, Quantification of vasa vasorum density within intima-media of coronary arterial wall using contrast enhanced intravascular ultrasound with microbubbles and differential imaging algorithm, in World Congress of Cardiology, 2006.
M. Vavuranakis, T.G. Papaioannou, M. Naghavi, I.A. Kakadiaris, S.M. O'Malley, E.A. Sanidas, A. Papalois, and C. Stefanadis, Coronary perivascular flow imaging with intracoronary ultrasound catheter and intracoronary injections of ultrasound contrast agent, in World Congress of Cardiology, 2006.
S.M. O'Malley, M. Vavuranakis, R. Metcalfe, C.J. Hartley, M. Naghavi, and I.A. Kakadiaris, Intravascular ultrasound-based imaging of vasa vasorum for the detection of vulnerable atherosclerotic plaque, in Proceedings of the Houston Society for Engineering in Medicine and Biology (HSEMB), February 2006.
I.A. Kakadiaris, S. Urban, S.M. O'Malley, B. Walsh, B. Losavio, T. Hoogland, P. Saggau and C. Colbert, Automatic reconstruction of dendrite morphologies from confocal images, 2nd Annual Houston Conference on Theoretical Neuroscience, Rice University, October 2004.
The downloadable publications on this web site are presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by the authors or other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each copyright holder, including not reposting any work without explicit permission. Some publications are unavailable here due to copyright restrictions.
Software List (Abridged version)
AHDRIA & AHDRIC are software for automated capture of high dynamic range images.
The HDRI utilities allow the use of high dynamic range imaging (HDRI) data with the popular POV-Ray raytracing software.
LoadTGTerrain.m Matlab script for loading Terragen terrain files into a standard matrix. View with imshow(), produce contour maps with contour(), manipulate with the Mapping Toolbox, etc.!
More software is available at the Projects and Programs pages on my GeoCities website. Including: The Lensflare Toolkit, Perl-based L-Systems, ABC2NW (music typesetting), various JavaScripts, the Programmer's Color Picker, the Base64 Utilities, HDR2TIFF (convert between these two high dynamic range image formats), DEM2TGA, and various other bits of code.
