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Tomihisa (Tom) Welsh

Research Interests

Computer Graphics
Scientific Visualization
Texture Synthesis
Computer Vision

Education

Reed College,B.A. Psychology
SUNY Stony Brook, M.S. Computer Science

Experience

University of Pittsburgh Medical Center:Research Associate for brain imaging lab
Center for Cognitive Brain Imaging (Carnegie Mellon University) : Research Programmer
Center for Visual Computing (SUNY Stony Brook) : Research Assistant

Resume

Projects

Volume Rendering with Points	This project introduces a technique for converting an image or volume into a space efficient point hierarchy which retains the original frequency content of the dataset. We have implemented a fast, interactive splatter to demonstrate its use. Project Page
Transferring Color To Greyscale Images	By matching luminance and texture matching between two images, we can transfer the color "mood" from the source image to a greyscale image. Project Page Siggraph 2002 Paper (pdf)
BrainMiner	A collaborative project between the Center for Data Intensive Computing (Brookhaven National Lab) and SUNY Stony Brook (Center for Visual Computing). We provide an interactive 3D visualization tool for studying functional connectivity in the brain for MRI and PET data. BrainMiner Page Visualization 2001 Paper
Qsplat	For my final course project in CSE 528 (Introduction to Computer Graphics), I implemented the SIGGRAPH 2000 paper by Szymon Rusinkiewicz and Marc Levoy. By using a hierarchical point representation, one can achieve interactive rendering speeds on typical PCs.
Implicit Surfaces and Shape Transformation	For CSE 530 (Geometric Foundations), I implemented the SIGGRAPH 1999 paper by Greg Turk "Shape Transformation Using Variational Implicit Functions". Using implicit surfaces, a surface can be gradually transformed into another.

Publications

Welsh, T. and Mueller, K., A Frequency-Sensitive Point Hierarchy for Images and Volumes, Proceedings of IEEE Visualization 2003, Seattle, 2003. Download Paper (pdf, 3.0 Mb)

Welsh, T., Ashikhmin, M., Mueller, K. Transferring Color to Grayscale Images, ACM SIGGRAPH 2002, San Antonio, 2002. Download Paper (pdf, 3.9 Mb)

Welsh, T., Mueller, K., Zhu, W., Volkow, N., Meade, J., Graphical Strategies to Convey Functional Relationships in the Human Brain: A Case Study, Proceedings of IEEE Visualization 2001, San Diego, October, 2001. Download Paper (pdf, 1.7 Mb)

Welsh, T., Mueller, K., Zhu, W., Meade, J., Volkow, N., BrainMiner: A 3D visual interface for the investigation of functional relationships in the brain, Proceedings of SPIE: Medical Imaging 2001, May 2001.

Welsh, T., Mueller, K., Zhu, W., Meade, J., Volkow, N., BrainMiner: A Visualization Tool for ROI-Based Discovery of Functional Relationships in the Human Brain, New Paradigms in Information Visualization and Manipulation (NPIVM) 2000, Washington DC, November, 2000.

Casey, B.J., Thomas, K. M., Welsh, T., Livnat, R., & Eccard, C., Cognitive and behavioral probes of development using functional magnetic resonance imaging. In M. Ernst & J.M. Rumsey (Eds.) Functional Neuroimaging in Child Psychiatry. New York, NY: Cambridge University Press, 2000.

Casey, B. J., Thomas, K. M., Welsh, T. F., Badgaiyan, R., Eccard, C. H., Jennings, J. R., & Crone, E. A. (2000). Dissociation of response conflict, attentional control, and expectancy with functional magnetic resonance imaging (fMRI). Proceedings of the National Academy of Sciences. USA. 97, 8728-8733.

Thomas, K.M., King, S.W., Franzen, P.L., Welsh, T.F., Berkowitz, A.L., Noll, D.C., Birmaher, V., and Casey, B.J. (1999). A developmental functional MRI study of spatial working memory. Neuroimage 10, 327-338.

Welsh, T., Anticipation of an Aversive Event: The Effects of Punishment on Attention, Undergraduate Thesis, Reed College, 1995. , visitors since 6/17/2002

Tomihisa Welsh 2003-4-17