TAE EUN CHOE

Research Scientist

ObjectVideo Inc.

11600 Sunrise Valley Dr. Suite 290, Reston, VA,20190, USA

Tel (213) 210-9944 · E-mail: techoe@gmail.com · WWW: http://techoe.googlepages.com

Updated: Aug. 14, 2008

RESEARCH INTERESTS

· Computer vision and image processing

· Computer graphics, intelligent systems, pattern recognition, machine learning, mobile computing, multimedia, etc.

EDUCATION
Ph.D. in Computer Science, GPA: 3.85 University of Southern California (Los Angeles, CA)	Aug.2001 – Aug.2007
MS in Computer Science, GPA: 3.85 University of Southern California (Los Angeles, CA)	Aug.2001 – Dec.2004
MS in Computer Science & Engineering, GPA: 3.45 Pohang Institute of Science and Technology (POSTECH) (Pohang, Korea)	Mar.1996 – Feb.1998
BS in Computer Engineering, GPA: 3.86 Pusan National University (Pusan, Korea)	Mar.1992 – Feb.1996
Summa Cum Laude (out of 80)

WORK EXPERIENCE
ObjectVideo Inc. (Reston, VA) Research Assistant	Oct.2007 – Present
Video Surveillance (Office of Naval Research –Future Naval Capabilities(FNC)) Developed key algorithms in a system to detect and track vessels in the ocean in real time.
Institute for Robotics and Intelligent Systems (IRIS) , University of Southern California (Los Angeles, CA) Research Assistant	Aug.2001 – Sep. 2007
3-D reconstruction and identification of a human face (Department of Justice Grant) Developed a system to reconstruct a human face from images taken at distance with a high resolution surveillance camera. The reconstructed face is compared with faces in the database system for identification. 3-D Euclidean reconstruction and registration of near-planar surface (NIH Grant) Proposed a method to reconstruct a near-planar surface, which has very small depth variations, such as a retinal fundus, a building façade, or satellite images of a terrain. The near-planar surface is famous for one of degenerate cases to be reconstructed in Euclidean space. The three-step bundle adjustment algorithm is proposed to estimate camera parameters and to reconstruct a dense 3-D near-planar surface. Subsequently, the images are back-projected to the reconstructed 3-D structure for more accurate registration of the images. 3-D shape reconstruction of retinal fundus from stereo pairs (NIH Grant No. R21 EY015914-01) Developed an algorithm to reconstruct a 3-D shape of retinal fundus from stereo images, which utilized bifurcations of vessels called Y-features as feature points. The fundamental matrix for the planar-like surface was estimated based upon the plane+parallax algorithm for correctly matched Y-features. Dense disparity map was constructed by mutual information. The Lookup-table-based implementation of mutual information speeded up the process 8 times faster than the previous method. The performance was evaluated by combining 3-D reconstruction data with OCT data, which is considered as the best ground truth at present. The proposed method provides a more cost-effective diagnostic procedure for ophthalmologists than the currently used OCT equipment. Registration of multimodal fluorescein retinal fundus images (NIH Grant) Designed and implemented a 2-D registration algorithm of color and fluorescein retinal images. The method developed detected Y-features in the image. Detected Y-features were matched across multimodal images based upon the mutual information criterion. Global registration, which was estimated with all pairs’ shortest path algorithm, was proposed as a method of identifying the best reference frame and optimal registration pairs and orders from multiple images. 3-D building detection and reconstruction (NIMA Project) - Developed a system to detect buildings from aerial views in LISP programming language. - Implemented an algorithm to detect and remove obstacles in front of the building façade in ground view images. - Developed a method to model a 3-D image of building façade.
Pohang Institute of Science and Technology (Pohang, South Korea) Research Associate (Project Leader)	Apr.2000 – Aug.2001
3-D building reconstruction from the satellite images Made a system of detection and reconstruction of artificial structures by processing satellite images Model based 3-D face reconstruction Developed a system to model a 3-D human face reconstruction from frontal and side images
Research Assistant	Mar.1996 – Feb.1998
Stereo matching algorithm Developed an intensity- and feature-based stereo matching algorithm to reconstruct 3-D objects such as human face. Navigation system for unmanned vehicle (Granted by Hyundai Motors) Participated in the project to develop the algorithm to detect traffic lanes and traffic signals.
LG Electronics (Seoul, South Korea) Research Assistant	Mar.1998 – Feb.2000
Video Codec for H.263+ Developed a de-blocking filter for video CODEC, which was accepted for the H.263+ standard and awarded as the best paper. LG cellular Phone for Sprint Co. Engaged in the SMS (Short Message Service) and call processing part for the first CDMA mobile phone of LG Electronics in the United States.
Samsung Electronics (Pusan, South Korea) Intern/Co-op student	Mar.1995 – Feb.1996
Created software products as a member of the Samsung Software Membership team project.
PUBLICATION AND PATENT
Journal Papers Tae Eun Choe, Isaac Cohen, Gerard Medioni, Alexander Walsh, SriniVas Sadda, "2-D Registration and 3-D Shape Reconstruction of the Retinal Fundus from Fluorescein Images,” Journal of Medical Image Analysis, pp. 179-190, Apr. 2008 Tae Eun Choe, H.M. Kwon, J.S. Park, Joon H. Han, "Stereo Matching based on Intensity and Feature for Image with Removed Background," Journal of Korea Information Science Society, pp.1482-1496. , Dec. 1999 M.C. Hong, Tae Eun Choe, ChangMo Yon, YoungMan Park, "Gradient-Projection Algorithm for Reducing Blocking Artifacts and Ringing Effects of Compressed Images," Journal of the Korea Broadcasting Institute, pp. 160-167, 1998 (Invited paper) Conference Papers Tae Eun Choe, Krishnan Ramnath, Mun Wai Lee, Niels Haering, “Image Transformation for Object Tracking in High Resolution Video,” ICPR2008, 2008 Zeeshan Rasheed,Xiaochun Cao, Khurram Shafique, Haiying Liu, Li Yu , Mun Wai Lee, Krishnan Ramnath, Tae Eun Choe, Omar Javed, Niels Haering, “Automated Visual Analysis in Large Scale Sensor Networks”, International Conference on Distributed Smart Cameras (ICDSC-08) Tae Eun Choe, Gerard Medioni, "3-D Metric Reconstruction and Registration of Images of Near-planar Surfaces," ICCV 2007, Rio De Janeiro, Brazil, Oct. 2007 Tae Eun Choe, Isaac Cohen, Gerard Medioni, "3-D Shape Reconstruction of Retinal Fundus," CVPR 2006, pp. 2277-2284, 2006 Tae Eun Choe, Isaac Cohen, Gerard Medioni, Alexander C. Walsh, SriniVas R. Sadda, "Evaluation of 3-D Shape Reconstruction of Retinal Fundus," MICCAI 2006, pp. 134-141, 2006 Tae Eun Choe, Isaac Cohen, Munwai Lee, Gerard Medioni, "Optimal Global Mosaic Generation from Retinal Images," ICPR 2006, pp. 681-684, 2006 Tae Eun Choe, Isaac Cohen, "Registration of Multimodal Fluorescein Images Sequence of the Retina," ICCV 2005, pp. 106-113, 2005 M.C. Hong, Tae Eun Choe, ChangMo Yon, YoungMan Park, "Gradient-Projection Algorithm for Reducing Blocking Artifacts and Ringing Effects of Compressed Images," in Proceeding of the Korea Broadcasting Institute Conference, pp. 91-94, 1998 (Best paper award) Tae Eun Choe, Joon H. Han, "Intensity- and Feature-based Stereo Matching," in Proceeding of Korea Information Science Society, pp.509-512, fall 1997

Patents

• Tae Eun Choe, Gérard Medioni, “Method and Apparatus for 3-D Euclidean Reconstruction and Registration of Images of Near-planar Surfaces”, USC, Office of Technology Licensing file #3969
• Tae Eun Choe, Isaac Cohen, “3-D shaped reconstruction of retinal fundus from fluorescein images”, USC, Office of Technology Licensing file #3778

• Tae Eun Choe, Sung Chul Kang, “Apparatus and method for transmitting call holding message in mobile communication terminal”, US: 6,782,252

TEACHING EXPERIENCE
University of Southern California (Los Angeles, CA) Teaching Assistant Advanced Artificial Intelligence (CS573) Computer Vision (CS574) Computer Graphics (CS480) Pohang University of Science and Technology (Pohang, Korea) Teaching Assistant Computer Architecture (CS311), Taught an assembly language		Spring 2004 Fall 2003 Fall 2002, Spring 2003 Fall 1996
AWARDS AND HONORS
· Outstanding Academic Achievements Award from USC (PhD)		May 2007
· USC Teaching and Research Assistantship		May 2002 – Present
· Outstanding Academic Achievements Award from USC (MS)		May 2004
· Student Scholarship from Korea Government ($60,000)		Sep.2001 – Aug.2005
· The Best Paper Award in Korea Broadcasting Conference		Oct.1998
· LG Electronics Scholarship		Mar.1996 – Feb.1998
· Student Scholarship from POSTECH		Mar.1996 – Feb.1998
· Premium Award for Academic Excellence For summa cum laude, Pusan National University		Feb.1996
· The third prize in National Software Contest as a group, Hyundai Electronics		Aug.1994
· The fifth prize in National Software Contest as an individual, Hyundai Electronics		Aug.1994
· Student Scholarship from Pusan National University		Aug.1992 – Feb.1996
LANGUAGES
English, Japanese, Korean : Fluent German, Chinese: Basic speaking and reading
TECHNICAL SKILLS
Programming languages and platforms: Visual C/C++, MATLAB, LISP, Visual Basic, FORTRAN, Pascal, HTML, Java, Javascript, Perl, XML, x86 Assembly Language, UNIX, MS-Windows Hardware design: pASIC, QuickLogic, Z80 microprocessor Image processing, vision, graphics: MATLAB, OpenGL, OpenCV Multimedia packages: Maya, Adobe Premiere, Adobe Photoshop
REFERENCES
Gérard Medioni Chairman, Dept. of Computer Science, University of Southern California, Los Angeles, CA, 90089, USA E-mail: medioni at usc dot edu Ramakant Nevatia Professor, Dept. of Computer Science, University of Southern California, Los Angeles, CA, 90089, USA E-mail : nevatia at usc dot edu	Isaac Cohen Section Leader, Integrated Security Technology, Advanced Technology Laboratory Automation & Control Solutions, Honeywell, Minneapolis, MN, USA E-mail: Isaac.Cohen at Honeywell dot com Joon H. Han Professor, Dept. of Computer Science and Engineering, Pohang University of Science and Technology, S. Korea E-mail: joonhan at postech dot edu