Hyowon Ha

Ph.D Candidate
Robotics and Computer Vision Lab.
School of Electrical Engineering
Korea Advanced Institute of Science and Technology (KAIST)
Daejeon, South Korea

Email: hwha [at] rcv.kaist.ac.kr, hahyowon [at] kaist.ac.kr
[CV] [Google Scholar]

Research Interests
  • 3D computer vision
  • Camera calibration
  • Visual odometry
  • Structured-light
News

2017.03. One paper accepted - ICCV 2017
2017.03. One paper accepted - SPL
2017.03. One paper accepted - CVPR 2017
2016.07. Two papers accepted - ECCV, ECCVW 2016
2016.06. One paper accepted - ISMAR 2016
2016.06. Internship at Oculus Research Pittsburgh (6 months)


Publications

    International Journal
A Closed-form Solution to Rotation Estimation for Structure from Small Motion
Hyowon Ha, Tae-Hyun Oh and In So Kweon
IEEE Signal Processing Letters (SPL), May 2017.
[Link]
A Real-time Augmented Reality System to See-Through Cars
François Rameau, Hyowon Ha, Kyungdon Joo, Jinsoo Choi, Kibaek Park and In So Kweon
IEEE Transactions on Visualization and Computer Graphics (TVCG), Nov 2016.
IEEE International Symposium on Mixed and Augmented Reality (ISMAR), Sep 2016. [Oral presentation]
[Link]
Automated Checkerboard Detection and Indexing using Circular Boundaries
Yunsu Bok, Hyowon Ha and In So Kweon
Pattern Recognition Letters (PRL), Feb 2016.
[Link]


   International Conference

Deltille Grids for Geometric Camera Calibration
Hyowon Ha*, Michal Perdoch*, Hatem Alismail, In So Kweon and 
Yaser Sheikh
IEEE International Conference on Computer Vision (ICCV), Oct 2017. 
(*equal contribution)
[paper]


Noise Robust Depth from Focus using a Ring Difference Filter
Jaeheung Surh, Hae-Gon Jeon, Yunwon Park, Sunghoon Im, Hyowon Ha and In So Kweon
IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Jul 2017. 
[Spotlight presentation]
[PDF] [Project Page]

A Real-time Vehicular Vision System to Seamlessly See-through Cars
François Rameau, Hyowon Ha, Kyungdon Joo, Jinsoo Choi and In So Kweon
ECCV Workshop - Assistive Computer Vision and Robotics (ECCVW), Oct 2016.
[Link]

https://sites.google.com/site/hyowoncv/home/ECCV_teaser.png

All-around Depth from Small Motion with a Spherical Panoramic Camera
Sunghoon Im, Hyowon HaFrançois Rameau, Hae-Gon Jeon, Gyeongmin Choe and In So Kweon
European Conference on Computer Vision (ECCV), Oct 2016.
[PDF] [Project Page]

https://sites.google.com/site/hyowoncv/home/cvpr16_uncalibrated.png

High-quality Depth from Uncalibrated Small Motion Clip
Hyowon Ha, Sunghoon Im, Jaesik Park, Hae-Gon Jeon and In So Kweon
IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Jun 2016. 
[Oral presentation, acceptance rate 3.9%]
[PDF] [Project Page]

https://sites.google.com/site/hyowoncv/home/cvpr16_rgbw.png?attredirects=0

Stereo Matching with Color and Monochrome Cameras in Low-light Conditions
Hae-Gon Jeon, Joon-Young Lee, Sunghoon Im, Hyowon Ha and In So Kweon
IEEE Conference on Computer Vision and Pattern Recognition (CVPR), Jun 2016.
[PDF]

 https://sites.google.com/site/hyowoncv/home/iccv_calibration.png?attredirects=0

Accurate Camera Calibration Robust to Defocus using a Smartphone 
Hyowon Ha, Yunsu Bok, Kyungdon Joo, Jiyoung Jung and In So Kweon
IEEE International Conference on Computer Vision (ICCV), Dec 2015.
[PDF] [Project Page]

High Quality Structure from Small Motion for Rolling Shutter Cameras
Sunghoon Im, Hyowon Ha, Gyeongmin Choe, Hae-Gon Jeon, Kyungdon Joo and In So Kweon
IEEE International Conference on Computer Vision (ICCV), Dec 2015.
[PDF] [Project Page]

6-DOF Direct Homography Tracking with Extended Kalman Filter 
Hyowon Ha, François Rameau and In So Kweon
The 7-th Pacific Rim Symposium on Image and Video Technology (PSIVT), Nov 2015.
[Oral presentation, acceptance rate 19.5%]
[PDF]

A Multi-View Structured Light System for Highly Accurate 3D Modeling
Hyowon Ha, Tae-Hyun Oh and In So Kweon
International Conference on 3D Vision (3DV), Oct 2015.
[PDF]

Dense Depth and Albedo from a Single-shot Structured Light
Hyowon Ha, Jaesik Park and In So Kweon
International Conference on 3D Vision (3DV), Oct 2015.
[PDF]

Fused Robot Pose Estimation using Embedded and External Cameras
Kibaek Park, Hyowon Ha, François Rameau and In So Kweon
International Conference on Ubiquitous Robots and Ambient Intelligence (URAI), Oct 2015.
[PDF]

Depth Estimation from Light Field Cameras
Sunghoon Im, Hae-Gon Jeon, Hyowon Ha and In So Kweon
International Conference on Ubiquitous Robots and Ambient Intelligence (URAI), Oct 2015.
[PDF]

A Novel 2.5D Pattern for Extrinsic Calibration of ToF and Camera Fusion System
Jiyoung Jung, Yekeun Jeong, Jaesik Park, Hyowon Ha, James Dokyoon Kim and In So Kweon
IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) , Sep 2011.
[PDF] [Project Page]



    Other Publications
•  Fast Depth from Defocus with Your Mobile Phone for Synthetic Defocus
   Jaeheung Surh, Hae-Gon Jeon, Hyowon Ha, Sunghoon Im and In So Kweon
   Workshop on Image Processing and Image Understanding (IPIU), Feb 2016

•  디스플레이 장치를 이용한 카메라 캘리브레이션 방법
   하효원, 복윤수, 주경돈, 정지영, 권인소
   한국로봇종합학술대회, Jan 2016

• 휴대용 카메라의 작은 움직임을 이용한 3차원 구조 복원
   임성훈, 하효원, 최경민, 전해곤, 주경돈, 권인소
   한국로봇종합학술대회, Jan 2016

•  Structure from Small Motion for Rolling Shutter Cameras
   Sunghoon Im, Hyowon Ha, Gyeongmin Choe, Hae-Gon Jeon, Kyungdon Joo and In So Kweon
   The 10th International Workshop on Robust Computer Vision (IWRCV), Nov 2015

•  동적 필터링 알고리즘을 이용한 구조광 3차원 센서의 정확도 개선
   하효원, 권인소
   대한전자공학회 하계학술대회, Jul 2013

•  키넥트 깊이 정확도 개선을 위한 적외선 패턴 영상의 스테레오 정합
   최경민, 박재식, 하효원, 권인소
   한국멀티미디어학회 춘계학술발표대회, May 2013

•  Real-time Indoor 3D Reconstruction with a Hand-held RGB-D Camera
   Hyowon Ha, David Lee and In So Kweon 
   The 7th International Workshop on Robust Computer Vision (IWRCV), Jan. 2013

•  Stabilizing Visual SLAM using Limited Range Measurements
   Yekeun Jeong, Jun-sik Kim, Yunsu Bok, Hyowon Ha and In So Kweon
   Workshop on Image Processing and Image Understanding (IPIU), Feb 2012


Honors & Awards
  • Best Poster Award, The 29th Workshop on Image Processing and Image Understanding, Feb 2017 (2/2) [Certificate]
  • Best Poster Award, The 29th Workshop on Image Processing and Image Understanding, Feb 2017 (1/2) [Certificate]
  • Qualcomm Innovation Award, Qualcomm Korea Corp. and KAIST, Mar 2016 [Certificate]
  • Silver prize, The 22nd Humantech Paper Award, Samsung Electronics, Feb 2016 [Certificate]
  • Best Poster Award, The 10th International Workshop on Robust Computer Vision, Nov 2015 [Certificate]
  • National Science and Engineering Undergraduate Scholarship, Mar 2006 - Feb 2009
  • Samsung Frontier Membership, Since 2006
  • Full scholarship, Jeongsu Scholarship Foundation, Mar 2004 - Feb 2006
  • Silver prize (tie for 4th place), Korea Olympiad in Informatics (KOI), 2004
  • Bronze prizes, Korea Olympiad in Informatics (KOI), 2002, 2003, 2005
  • Grand prizes, South Gyeongsang Province Olympiad in Informatics, 2000 - 2005