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Youzuo Lin

Email
Phone (505) 667-7335

Expertise

● Computational Methods for Large-Scale Inverse Problems with Its Applications to Seismic Imaging, Medical Imaging, and Image Analysis

● Subsurface Imaging (Quantitative Estimation of Subsurface Geophysical Parameters with Its Application to Geothermal Resource Exploration and Monitoring for Geological Carbon Sequestration)

● Medical Imaging (Breast Ultrasound Tomography for Early Cancer Detection and Diagnosis; Positron Emission Tomography for the Detection of Alzheimer Disease)


● Image Processing and Analysis (Image Restoration/Enhancement/Denoising and Super Resolution)

● High Performance Computing Using Multiple GPUs and Clusters (Parallel Linear Solver for a CPU and Multiple GPUs Hybrid Computing Environment)

● Regularization and Convex Optimization Techniques for Nonlinear Functions (Tikhono, Variational-Based Regularization and Compressive Sensing)

● Machine Learning and Pattern Recognition (Text Retrieval, Learning-Based Super Resolution and Dimensionality Reduction)

● Programming Languages: Matlab programming, C / C++, CUDA, FORTRAN, optimization solvers such as CVX (Matlab Software for Disciplined Convex Programming), SparseLab, and SPGL1

Education

Ph.D., Mathematics, August, 2010, Arizona State University, Tempe, AZ

B.S., Information and Computational Science, July 2003, Changchun University of Science and Technology, Jilin, China

 

LANL Positions

Scientist II, Earth and Environmental Sciences, Geophysics Group (EES-17), 2013-present

Postdoctoral, Earth and Environmental Sciences, Geophysics Group (EES-17), 2010-2013

 

Professional Societies

AGU - American Geophysical Union

Society of Exploration Geophysicists (SEG)

Society for Industrial and Applied Mathematics (SIAM)

International Society of Optics and Photonics (SPIE)

 

Publications

Computational Methods for Ill-posed Inverse Problems

  • Rosemary Renaut, Youzuo Lin, and Hongbin Guo, “Solving Least Squares Problems by Using a Regularized Multisplitting Method”, Numerical Linear Algebra with Applications, vol. 19, issue. 4, DOI: 10.1002/nla.797, pp. 655–676, 2011.
  • Youzuo Lin, Brendt Wohlberg, Hongbin Guo, “UPRE Method for Total Variation Parameter Selection”, Signal Processing, vol. 90, no. 8, pp. 2546–2551, Aug. 2010
  • Youzuo Lin, Brendt Wohlberg, “Application of the UPRE Method to Optimal Parameter Selection for Large Scale Regularization Problems”, 2008 IEEE Southwest Symposium on Image Analysis and Interpretation, Mar 2008, pp. 89-92
  • Richard Barnard, Yutheeka Gadhyan, Youzuo Lin, Lin Tong, Jiaping Wang, Guangjin Zhong, Anthony Kearsley, “Modelling the Background Noise in a Mass Spectrometer for Denoising Applications”, Mathematical Modeling in Industry XII Workshop, Institute for Mathematics and Its Applications, University of Minnesota, Aug. 2008
  • Youzuo Lin, Brendt Wohlberg, “Estimation of optimal regularization parameters for image processing”, Los Alamos Report LA-UR-07-5742, Aug. 2007
  • Felix Krahmer, Youzuo Lin, Bonnie McAdoo, Katharine Ott, Jiakou Wang, David Widemann, Brendt Wohlberg, “Blind Image Deconvolution: Motion Blur Estimation”, Mathematical Modeling in Industry X Workshop, Institute for Mathematics and Its Applications, University of Minnesota, Aug. 2006

 

Seismic Inversion

  • Youzuo Lin and Lianjie Huang, “Quantifying Subsurface Geophysical Properties Changes Using Double-difference Seismic-Waveform Inversion with a Modified Total-Variation Regularization Scheme,” Geophysical Journal International, 203 (3): 2125-2149, doi:10.1093/gji/ggv429, 2015.
  • Youzuo Lin and Lianjie Huang, “Least-squares reverse-time migration with modified total-variation regularization,” SEG Technical Program Expanded Abstracts 2015: 4264-4269.
     
  • Kai Gao, Youzuo Lin, Lianjie Huang, John Queen, Joseph Moore, Ernest Majer, “Anisotropic elastic waveform inversion with modified total-variation regularization,” SEG Technical Program Expanded Abstracts 2015: 5158-5163.
     
  • Youzuo Lin and Lianjie Huang, “Elastic-Waveform Inversion with Compressive Sensing for Sparse Seismic Data,” Proceedings of the 40th Stanford Geothermal Workshop, vol. 40, pp. 882– 886, February 2015.
  • Youzuo Lin, Ellen M. Syracuse, Monica Maceira, Haijiang Zhang and Carene Larmat, “Double-difference traveltime tomography with edge-preserving regularization and a priori interfaces,” Geophysical Journal International, 201 (2): 574-594, 2015
  • Youzuo Lin and Lianjie Huang, “Acoustic- and Elastic-Waveform Inversion Using a Modified Total-Variation Regularization Scheme,”Geophysical Journal International, 200 (1): 489-502, 2015
  • Youzuo Lin and Lianjie Huang, “Quantitative monitoring for geologic carbon storage using edge-preserving full-waveform inversion of time-lapse seismic data,” Proceeding of the 13th Annual Conference on Carbon Capture, Utilization & Storage, April 2014
     
  • Youzuo Lin and Lianjie Huang, “Building subsurface velocity models with sharp interfaces and steeply-dipping fault zones using elastic-waveform inversion with edge-guided regularization,” Proceedings of the 39th Stanford Geothermal Workshop, vol. 39, pp. 871– 878, February 2014.
  • Youzuo Lin and Lianjie Huang, “Accurate velocity estimation for steep fault zones using full-waveform inversion with edge-guided regularization,” Proceeding of the 35th Geothermal Resources Council Annual Meeting, vol. 37, pp. 1031–1036, Oct. 2013.
  • Zhigang Zhang, Lianjie Huang, Youzuo Lin, “A wave-energy-based precondition approach to full-waveform inversion in the time domain,” Expanded Abstracts, Annual Meeting, Society of Exploration Geophysicists,DOI: 10.1190/segam2012-1555.1, pp. 1–5, November 2012.
     
  • Youzuo Lin, Lianjie Huang, Zhigang Zhang, “Quantifying Changes of Geophysical Properties in Small Regions within EGS Reservoirs”, in Proceedings of the 37th Stanford Geothermal Workshop, Stanford, January 2012.
  • Zhigang Zhang, Lianjie Huang, Youzuo Lin, “Double-Difference Elastic-Waveform Inversion with Weighted Gradients for Monitoring EGS Reservoirs”, in Proceedings of the 37th Stanford Geothermal Workshop, Stanford, January 2012.
     
  • Youzuo Lin, Lianjie Huang, Zhigang Zhang, “Quantitative Monitoring Enhanced Geothermal Systems Using Double-Difference Waveform Inversion with Spatially-Variant-Total-Variation Regularization”, the 35th Geothermal Resources Council Annual Meeting, Oct. 2011
     
  • Zhigang Zhang, Youzuo Lin, and Lianjie Huang, “Full-waveform inversion in the time domain with an energy-weighted gradient”, In Expanded Abstracts, Annual Meeting, Society of Exploration Geophysicists, Sept. 2011
     
  • Youzuo Lin, Zhigang Zhang, Lianjie Huang, “Spatially-Variant Tikhonov Regularization for Double-Difference Waveform Inversion”, the 10th Annual Conference on Carbon Capture & Sequestration, May 2011
     
  • Zhigang Zhang, Youzuo Lin, Lianjie Huang, “A Gauss-Newton-Krylov Method for Double-Difference Waveform Tomography”, the 10th Annual Conference on Carbon Capture & Sequestration, May 2011


Medical Imaging

  •  Miranda Intrator, Youzuo Lin, Ting Chen, Junseob Shin, Lianjie Huang, “Ultrasound bent-ray tomography with a modified total-variation regularization scheme,” Proc. SPIE 9419, Medical Imaging 2015: Ultrasonic Imaging, Tomography, and Therapy, DOI:10.1117/12.2082192, pp. 941917-1–941917-10, February 2015.
     
  • Lianjie Huang, Junseob Shin, Ting Chen, Youzuo Lin, Miranda Intrator, Kenneth Hanson, Katherine Epstein, Daniel Sandoval, Michael Williamson, “Breast ultrasound tomography with two parallel transducer arrays: preliminary clinical results,” Proc. SPIE 9419, Medical Imaging 2015: Ultrasonic Imaging, Tomography, and Therapy, DOI:10.1117/12.2082404, pp. 941916-1–941916-10, February 2015.
     
  • Youzuo Lin and Lianjie Huang, “Ultrasound waveform tomography with a spatially variant regularization scheme,” Proc. SPIE 9040, Medical Imaging 2014: Ultrasonic Imaging, Tomography, and Therapy, DOI:10.1117/12.2043110, pp. 90401M1–90401M7, February 2014.
     
  • Lianjie Huang, Youzuo Lin, Zhigang Zhang, Yassin Labyed, Sirui Tan, Nghia Nguyen, Kenneth Hanson, Daniel Sandoval, Michael Williamson, “Breast ultrasound waveform tomography: using both transmission and reflection data, and numerical virtual point sources ,” Proc. SPIE 9040, Medical Imaging 2014: Ultrasonic Imaging, Tomography, and Therapy, DOI:10.10.1117/12.2043136, pp. 90400T1–90400T12, February 2014.
     
  • Youzuo Lin, and Lianjie Huang, “Ultrasound waveform tomography with a modified total-variation regularization scheme,” Proc. SPIE 8675, Medical Imaging 2013: Ultrasonic Imaging, Tomography, and Therapy, doi:10.1117/12.2007650, pp 86751F1–86751F9, February 2013.
     
  • Youzuo Lin, Lianjie Huang, Zhigang Zhang, “Ultrasound waveform tomography with the total-variation regularization for detection of small breast tumors”, In Proceedings of the SPIE Medical Imaging Conference, San Diego, February 2012
     
  • Zhigang Zhang, Lianjie Huang, Youzuo Lin, “Efficient implementation of ultrasound waveform tomography using source encoding”, In Proceedings of the SPIE Medical Imaging Conference, San Diego, February 2012
  • Lianjie Huang, Yassin Labyed, Youzuo Lin, Zhigang Zhang, Michael Williamson M.D., Robert Rosenberg M.D., Philip H. Heintz, Daniel Sandoval, “Detection of breast microcalcifications using synthetic-aperture ultrasound”, In Proceedings of the SPIE Medical Imaging Conference, San Diego, February 2012

 

Graphics Processing Unit based High Performance Computing
 

  • Youzuo Lin, Rosemary Renaut, “Projected Conjugate Gradient Solvers on GPU and its Applications”, the GPU Technology Conference, Oct. 2010