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 candidate (expected 2012) 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).

My advisor is Prof. Klaus Mueller. My research interests include low-dose CT image restoration, GPU-accelerated iterative CT reconstruction methods, volume rendering, computer graphics and image processing.

new I am looking for a full-time job opportunity in software development for general problem solving.

Wei Xu Icon

Research Publications

2012
  • new Efficient Low-Dose CT Artifact Mitigation Using An Artifact-Matched Prior Scan

    • Wei Xu and Klaus Mueller
    Medical Physics, 2012 (submitted)

  
 
  • new Database-Assisted Low-dose CT Image Restoration

    • Wei Xu, Sungsoo Ha and Klaus Mueller
    The Second International Conference on Image Formation in X-Ray Computed Tomography
    Salt Lake City, Utah, June, 2012 (Oral, to appear)

ct meeting
 
  • Conformal Magnifier: A Focus+Context Technique with Local Shape Preservation pdf

    • Xin Zhao, Wei Zeng, Xianfeng Gu, Arie Kaufman, Wei Xu and Klaus Mueller
    IEEE Trans. on Visualization and Computer Graphics, Feb. 2012

tvcg2012
2011
  • A Reference Image Database Approach for NLM Filter-Regularized CT Reconstruction pdf

    • Wei Xu and Klaus Mueller
    11th Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine '11
    Potsdam, Germany, pp.116-119, July 2011     (Oral)

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

    • Ziyi Zheng, Wei Xu and Klaus Mueller
    11th Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine '11
    High Performance Image Reconstruction Workshop
    Potsdam, Germany, pp.52-55, July 2011 (Oral)

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

    • Wei Xu and Klaus Mueller
    GPU Computing Gems Emerald Edition, Chapter 43, pp.693-708, January 26, 2011

 GPU GEMS
2010
  • VDVR: Verifiable Volume Visualization of Projection-Based Data pdf

    • 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 pdf

    • 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 pdf

    • 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) pdf

    • Wei Xu, Fang Xu, Mel Jones, Bettina Keszthelyi, John Sedat, David Agard and Klaus Mueller
    Journal of Structural Biology, 171(2):142-153, 2010

 
  • Parameter space visualizer: an interactive parameter selection interface for iterative CT reconstruction algorithms pdf

    • Wei Xu and Klaus Mueller
    SPIE on Medical Imaging '10
    San Diego, California, Vol. 7625, 76251Q, February 2010
 
  • On the Efficiency of Iterative Ordered Subset Reconstruction Algorithms for Acceleration on GPUs pdf

    • 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

2009
  • Learning Effective Parameter Settings for Iterative CT Reconstruction Algorithms pdf

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

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

Wei Xu and Klaus Mueller
IEEE International Symposium on Biomedical Imaging (ISBI '09)
pp.1287-1290, Boston, MA, June 2009 (Oral)
2005
  • 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)

Talks

Wei Xu
Thesis Proposal (Prelim)
Stony Brook, NY, Oct. 6th 2010

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 (violin, piano, guitar), calligraphy, photography, yoga, shadowboxing, handcraft...

My PhD life is splendid... I enjoy both struggling with research deadlines and traveling all around the world...

To be continued...

 

Last Updated: 03/29/2012

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