Wei Xu

Computer Science Department, Stony Brook University,
Stony Brook, NY, 11794-4400

Email: wxu AT cs DOT stonybrook DOT edu

 

I'm a PhD student in Computer Science Department at Stony Brook University since Fall 2006. Before that, I obtained my M.S in 2006 and B.S in 2004 from Zhejiang University (State Key lab of CAD&CG).

I am working in the Center for Visual Computing (CVC). My advisor is Prof. Klaus Mueller. My research interests include Medical Imaging especially X-ray Computed Tomography and GPU-accelerated iterative reconstruction methods, Visualization, Visual Analytics and Computer Graphics.
Wei Xu Icon

Research

Conference/Journal/Book Publications

  • new A Reference Image Database Approach for NLM Filter-Regularized CT Reconstruction

    • Wei Xu and Klaus Mueller
    Fully3D '11 (Oral, to appear)

 fully3D
  • new Performance Tuning for CUDA-Accelerated Neighborhood Denoising Filters

    • Ziyi Zheng, Wei Xu and Klaus Mueller
    Fully3D '11 HPIR workshop (Oral, to appear)

 hpir11
  • new Using GPUs to Learn Effective Parameter Settings for GPU-Accelerated Iterative CT Reconstruction Algorithms

    • Wei Xu and Klaus Mueller
    GPU Computing Gems Emerald Edition, Chapter 43, January 26, 2011

 GPU GEMS
  • VDVR: Verifiable Volume Visualization of Projection-Based Data

    • Ziyi Zheng, Wei Xu and Klaus Mueller
    IEEE Transactions on Visualization and Computer Graphics (Special Issue IEEE Visualization Conference 2010)
    Salt Lake City, Utah, October, 2010

 vis10
  • Street Light View: Enriching Navigable Panoramic Street View Maps with
    Informative Illumination Thumbnails

    • Charles Rojo, Wei Xu, and Klaus Mueller
    IEEE Visualization Conference (poster session)
    Salt Lake City, Utah, October, 2010
  • Evaluating Popular Non-Linear Image Processing Filters for their Use in Regularized Iterative CT

    • Wei Xu and Klaus Mueller
    IEEE Medical Imaging Conference '10 (MIC)
    Knoxville, TN, October, 2010

 MIC
  • High-Performance Iterative Electron Tomography Reconstruction with Long-Object Compensation using Graphics Processing Units (GPUs)

    • Wei Xu, Fang Xu, Mel Jones, Bettina Keszthelyi, John Sedat, David Agard and Klaus Mueller
    Journal of Structural Biology, 2010, 171(2):142-153
  • Parameter space visualizer: an interactive parameter selection interface for iterative CT reconstruction algorithms

    • Wei Xu and Klaus Mueller
    SPIE on Medical Imaging '10
    San Diego, California, February 2010, Vol. 7625, 76251Q

  • On the Efficiency of Iterative Ordered Subset Reconstruction Algorithms for Acceleration on GPUs

    • Fang Xu, Wei Xu, Mel Jones, Bettina Keszthelyi, John Sedat, David Agard and Klaus Mueller
    Computer Methods and Programs in Biomedicine 98(3):261-270, 2010

  • Learning Effective Parameter Settings for Iterative CT Reconstruction Algorithms

    Wei Xu and Klaus Mueller
    10th Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine '09
    Beijing, China, September 2009, pp.251-254 (Oral)
  • A Performance-Driven Study of Regularization Methods for GPU-Accelerated Iterative CT

Wei Xu and Klaus Mueller
10th Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine '09
High Performance Image Reconstruction Workshop
Beijing, China, September 2009, pp.20-23 (Oral, Best paper award)
  • Accelerating regularized iterative CT reconstruction on commodity graphics hardware (GPU)

Wei Xu and Klaus Mueller
IEEE International Symposium on Biomedical Imaging (ISBI '09)
Boston, MA, June 2009, pp.1287-1290 (Oral)
  • Algorithms of Texture Recovery in Image Based Modeling

Wei Xu and Yue Chen
The 12th National Conference on Image and Graphics 2005 (NCIG '05)
Beijing, China, October 2005 (in Chinese)

Courses/Reports

Klaus Mueller, Wei Xu, Ziyi Zheng and Fang Xu
Course SC829 of SPIE on Medical Imaging 2010
San Diego, CA, February 2010

Klaus Mueller, Wei Xu, Ziyi Zheng and Fang Xu
Course SC829 of SPIE on Medical Imaging 2009
Orlando, FL, February 2009

Wei Xu
Research Proficiency Exam (RPE)
Stony Brook, NY, Sep. 3rd 2008

Projects (selected)

Implemented the corresponding Siggraph '07 paper and obtained a real-time energy preserving image resizor that could keep the most important content unchanged.

Gift wrapping could give us O(nh) complexity to get the convex hull of input points. If the input is a set of convex polygons, should we make it better? The answer is absolutely yes. Using the geometry relationship of points and applying binary search, we could largely decrease the time searching for the next on-hull point, which is the tangent point in this case. Also, we implemented the animation of the procedure finding the convex hull and supported speed control and file input/output.

Extended the GPU-Accelerated Volume Renderer to Computed Tomography (CT) Reconstruction, and modified an iterative Simultaneous Algebraic Reconstruction Technique (SART) reconstructer to support reconstruction from limited angles, as well as providing regularization method to help overcome the resulting quality problems.

First touch to finance world. We implemented random walks model and two fundamental analysis models (Z-Score and Black-Scholes) to predict default.

Based on the paper "A review and taxonomy of distortion-oriented presentation techniques"[Y.K. Leung M.D. Apperley 94] to implement the transformation and magnification functions of some distortion. Thus, got four distortion effects - bifocal display, polyfocal display, fisheye view and perspective wall.

Wrote a GPU-accelerated volume renderer, based on both texture slicing and ray-casting for Maximum Intensity Projection (MIP), Density Compositing and X-Ray rendering, which also supports transfer function-based manipulation, illumination and shading effects, as well as some optimizations such as empty-space skipping, early ray termination, etc. Also wrote an image processor, which could do some image processing functions such as equalization, convolutionr, edge detection, median filter and so on.

Education

Sep. 2006 - present Department of Computer Science, Stony Brook University (GPA: 3.90/4.0)
Sep. 2004 - Jun. 2006 M.S in Computer Science, Zhejiang University, Hangzhou, China (GPA: 3.94/4.0)
Sep. 2000 - Jun. 2004 B.S in Computer Science, Zhejiang University, Hangzhou, China (GPA: 3.90/4.0)
Sep. 1997 - Jun. 2000 Jinling Middle School, Nanjing, China

More about me?

I have plenty of hobbies, singing, dancing, drawing, playing instruments, calligraphy, photography, yoga, shadowboxing, handcraft......Photos.

When I was having fun at some gorgeous places...Photos.

Precious memory...if I could remember...Photos.

 

Last Updated: 01/21/2011

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