Kuei-Tsung (Philips) Shih

PhD Student, Department of Electrical and Computer Engineering

Contact Information

Office: Benton Hall, Room 330

Tel: 1-352-392-9034

Email: ktshih@ufl.edu and shih@chrec.org

 

Affiliations

I am a student member of the NSF Center for High-Performance Reconfigurable Computing (CHREC) at University of Florida. I am also a member of Adaptive Signal Processing Lab (ASPL) at UF.

Spring 2009 Schedule

Research Interests & Activities

Light Detection and Ranging (LIDAR) is an emerging technology in the remote sensing field. I am interested in LIDAR-related research, particularly including its real-time processing algorithms, its hardware development using HPEC devices, and its artifact mitigation via signal processing techniques.

I am currently active in project F3 in CHREC, whose major focus in 2008 is application case studies for multi-FPGA designs. I have developed a prototypical FPGA design for real-time LIDAR processing on both the Cray XD1 (6 nodes) and the DRC DS1002 (1 node) systems. Figure 1 illustrates the architectural diagram of the single-FPGA design on Cray XD1 and showcases the SW (MATLAB) and HW results of processing simulated LIDAR data.

Figure 1. (Left) Single-FPGA design for LIDAR processing on Cray XD1 (Middle) SW results produced in MATLAB (Right) HW results obtained on Cray XD1

I have also developed an end-to-end LIDAR simulator (in MATLAB) that mimics the behavior of a LIDAR system and provides means for investigating quasi-periodic artifacts (usually referred to as corduroy patterns). These patterns usually appear in low relief (flat) area when observed in Digital Elevation Models (DEMs) that are presented in the form of shaded-relief images. Figure 2 illustrates strong corduroy patterns over the Pahrump Valley area.

Figure 2. Shaded-relief image of the Pahrump Valley data, acquired by NSF Center for Airborne Laser Mapping (NCALM) at UF in spring 2004.

Publications

1. K. Shih, A. Balachandran, K. Nagarajan, B. Holland, C. Slatton, and A. George, "Fast Real-time LIDAR Processing on FPGAs," Proc. of 2008 International Conference on Engineering of Reconfigurable Systems and Algorithms (ERSA), Las Vegas, NV, July 14-17, 2008. (PDF)

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