nucl23

Hojin Cho (Jin Cho), Ph.D

Algorithm Engineer,
StradVision, Inc.

 Jigok Research Center
 San 31, Hyoja-dong, Nam-gu
 Pohang, Republic of Korea (790-784)

E-mail: hojin.cho _AT_ stradvision.com
NUCL23 _AT_ gmail.com
NUCL23 _AT_ postech.ac.kr
* replace _AT_ with @

Google Scholar Link

Education & Career / Research / Activities / Publications / Patents / Programs / Awards / Exhibition / Teaching / Projects

Education & Career

Research Interests

  • Computer Vision
  • Computer Graphics & Image Processing (Quality Enhancement)
    • Image Deblurring
    • Super-resolution Reconstruction
    • Document Restoration
    • High Dynamic Range Imaging/Reconstruction
  • Deep Learning (using Tensorflow, Caffe)
    • Recurrent Neural Networks (RNN)
    • Long Short-Term Memory (LSTM)
  • Parallel Computing
    • CUDA (NVIDIA)
    • OpenCL

Activities

  • Program Committee (PC)
    • International Conference on Document Analysis and Recognition (ICDAR) 2017

Publications

Journal

International
  1. Hojin Cho, Seon Joo Kim,  Seungyong Lee, "Single-shot High Dynamic Range Imaging Using Coded Electronic Shutter," Computer Graphics Forum (Special Issue on Pacific Graphics 2014), Vol. 33, No. 7, 2014. (Best Paper Award)
  2. Hojin Cho, Hyunjoon Lee, Henry Kang, Seungyong Lee, "Bilateral Texture Filtering," ACM Transactions on Graphics (SIGGRAPH 2014), Vol. 33, No. 4, July 2014. [Project]
  3. Sunghyun Cho, Hojin Cho, Yu-Wing Tai, Seungyong Lee, "Registration Based Non-uniform Motion Deblurring," Computer Graphics Forum (Special Issue on Pacific Graphics 2012), Vol.31, No.7, 2012.
Domestic
  1. 조호진, 이승용, "다중 노출 영상을 이용한 HDR 영상 복원 방법," 정보과학회논문지: 소프트웨어 및 응용, 제41권 제1호, 2014.
  2. 조호진, 이승용, "모션 블러 및 아웃라이어 처리를 통한 강인한 HDR 영상 복원 방법," 정보과학회논문지: 소프트웨어 및 응용, 제39권 제12호, 2012.

Conference

International
  1. Hojin Cho, Myungchul Sung, Bongjin Jun, "Canny Text Detector: Fast and Robust Scene Text Localization Algorithm," 2016 IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2016), Las Vegas, USA, 2016. (acceptance rate = 29.9%)
  2. Myung-Chul Sung, Bongjin Jun, Hojin Cho, Daijin Kim, "Scene Text Detection with Robust Character Candidate Extraction Method," 13th International Conference on Document Analysis and Recognition (ICDAR 2015), 2015.
  3. Hojin Cho, Hyunjoon Lee, Seungyong Lee, "Radial Bright Channel Prior for Single Image Vignetting Correction," 13th European Conference on Computer Vision (ECCV 2014), Zurich, Switzerland, pp.189-202, September 6-12, 2014. (acceptance rate = 27%) [Project]
  4. Hojin Cho, Seungyong Lee, "High Dynamic Range Imaging Using Coded Electronic Shutter," ACM SIGGRAPH 2013 Posters, Article No. 65, Anaheim, California, July 2013. (SIGGRAPH 2013 Student Research Competition (SRC) Semi-finalist).
  5. Hojin Cho, Jue Wang, Seungyong Lee, "Text Image Deblurring Using Text-specific Properties," 12th European Conference on Computer Vision (ECCV 2012), Firenze, Italy, pp.524-537, October 7-13, 2012. (acceptance rate = 25%) [Project]
  6. Hojin Cho, Sunghyun Cho, Young Su Moon, Junguk Cho, Shihwa Lee, Seungyong Lee, "Analysis of Practical Coverage of Uniform Motions for Approximating Real Camera Shakes," IS&T/SPIE Electronic Imaging 2012, Hyatt Regency San Francisco Airport, Burlingame, California, USA, January 22-26, 2012.
  7. Sunghyun Cho, Hojin Cho, Yu-Wing Tai, Young Su Moon, Junguk Cho, Shihwa Lee, Seungyong Lee, "Lucas-Kanade image registration using camera motions," IS&T/SPIE Electronic Imaging 2012, Hyatt Regency San Francisco Airport, Burlingame, California, USA, January 22-26, 2012.
  8. Sunghyun Cho, Hojin Cho, Yu-Wing Tai, Seungyong Lee, "Non-uniform Motion Deblurring for Camera Shakes using Image Registration," ACM SIGGRAPH 2011 Talks (previously known as sketch), Article No. 62, Vancouver, Canada, August 2011.
  9. Hojin Cho, Kwanwoo Lee, Kyo C. Kang, "Feature Relation and Dependency Management: An Aspect-Oriented Approach," 12th Software Product Line Conference (SPLC2008), Limerick, Ireland, pp.3-11, September 8-12, 2008. (acceptance rate = 30%)
  10. Hojin Cho, Jin-Seok Yang, "Architecture Patterns for Mobile Games Product Lines," 10th International Conference on Advanced Communication Technology (ICACT 2008), Phoenix Park, Korea, pp.118-122, Feb 17-20, 2008.
Domestic
  1. 조호진, 이현준, 이승용, "단일 영상 비네팅 보정을 위한 영상의 통계적 분석," 2014 한국컴퓨터종합학술대회 (KCC 2014), June 25-27, 2014.
  2. 조호진, 이승용, "다중 노출 영상을 이용한 HDR 영상 복원 방법," 2013 한국컴퓨터종합학술대회 (KCC 2013), June 26-28, 2013. (우수논문상)
  3. 조호진, 이승용, "아웃라이어 처리를 통한 강인한 HDR 영상 복원 방법," 2012 한국컴퓨터종합학술대회 (KCC 2012), June 27-29, 2012. (최우수논문상)
  4. 조호진, Jue Wang, 이승용, "텍스트 속성을 이용한 효과적인 텍스트 영상 디블러링," 한국 HCI 2012.
  5. 조호진, "휘처 중심의 분석을 바탕으로 하는 소프트웨어 아키텍처 패턴," 2008 한국 소프트웨어공학 학술대회 논문집 제10권 제1호, 강원도 용평리조트, pp.391-398, February 20-22, 2008.
  6. 양진석, 조호진, 강교철, "모바일 응용 S/W 개발을 위한 화면 중심의 사용자 인터페이스 모델링 방법," 제 28회 한국정보처리학회 추계학술발표대회 논문집 제14권 제2호, 목포대학교, pp.307-310, November 9-10, 2007.
  7. 조호진, 양진석, "모바일 어플리케이션 영역의 클라이언트 개발에 적용 가능한 소프트웨어 아키텍처 패턴 설계," 2007 한국정보과학회 가을 학술발표논문집 (KIISE2007), 제34권 제2호(B), 부산대학교, pp.114-119, October 26-27, 2007.
  8. 장엽, 조호진, 강교철, "소프트웨어 프로덕트 라인 공학에서의 컴포넌트 아키텍처 명세 방법," 한국 소프트웨어공학기술 합동 워크샵 2007 발표집 (KSEJW2007), 제5권 제1호, 전라남도 신안군 증도 엘도라도 리조트, pp.22-41, August 23-24, 2007.

Others

  1. 조호진, 이승용, "영상 디블러링 연구 동향(Research Trends of Image Deblurring)," 대한전자공학회지(The Magazine of the IEEK), October, 2012.
  2. 조호진, 이승용, "CCTV에 적용 가능한 문자 영상 디블러링 기술," 시큐리티월드, June, 2012.
  3. 조호진, 이승용, "CCTV에 적용 가능한 영상 디블러링 기술," 시큐리티월드, May, 2012.

Patents

  1. APPARATUS AND METHOD OF TEXTURE FILTERING USING PATCH SHIFT
    • Hojin Cho, Hyunjoon Lee, Seungyong Lee
    • KR, filed for a patent, 10-2015-0006964
  2. METHOD FOR VIGNETTING CORRECTION OF IMAGE AND APPARATUS THEREFOR
    • Hojin Cho, Hyunjoon Lee, Seungyong Lee
    • KR, filed for a patent, 10-2014-0186920
  3. MOTION DEBLURRING FOR TEXT IMAGES
    • Hojin ChoSeungyong Lee, Jue Wang, Jen-Chan Chien, Sarah A. Kong
    • US, issued, 8,705,88
  4. MOTION DEBLURRING USING IMAGE UPSAMPLING
    • Hojin ChoSeungyong Lee, Jue Wang, Jen-Chan Chien, Sarah A. Kong
    • US, issued, 9,042,672
  5. METHOD AND APPARATUS FOR DEBLURRING NON-UNIFORM MOTION BLUR IN LARGE SCALE INPUT IMAGE BASED ON TILE UNIT
    • Hojin ChoChiyoung Lee, Sunghyun Cho, Seungyong Lee, Junguk Cho, Young Su Moon, Shihwa Lee
    • US, issued, 9,042,673
    • CN, issued, 103,310,413
    • KR, filed for a patent, 10-2012-0025623
    • JP, filed for a patent, 2013-49522
  6. METHOD AND APPARATUS FOR DEBLURRING NON-UNIFORM MOTION BLUR USING MULTI-FRAME INCLUDING BLURRED IMAGE AND NOISE IMAGE
    • Hojin ChoChiyoung Lee, Sunghyun Cho, Seungyong Lee, Junguk Cho, Young Su Moon, Shihwa Lee
    • US, issued, 8,995,781
    • CN, issued, 103,310,430
    • KR, filed for a patent, 10-2012-0025622
    • JP, filed for a patent, 2013-43486
  7. METHOD AND AN APPARATUS FOR ROBUST ESTIMATION OF NON-UNIFORM MOTION BLUR
    • Hojin ChoChiyoung Lee, Sunghyun Cho, Seungyong Lee, Junguk Cho, Young Su Moon, Shihwa Lee
    • US, issued, 9,189,835
    • KR, filed for a patent, 10-2012-0022875
    • JP, filed for a patent, 2013-43485
  8. METHOD AND APPARATUS FOR REMOVING NON-UNIFORM MOTION BLUR USING MULTIFRAME
    • Hojin ChoSunghyun Cho, Seungyong Lee, Junguk Cho, Young Su Moon, Shihwa Lee
    • US, issued, 20130016239
    • KR, filed for a patent, 10-2011-0068511
  9. METHODS OF REMOVING MOTION BLUR AND APPARATUSES FOR THE SAME
    • Hojin Cho, Sunghyun Cho, Yu-Wing Tai, Seungyong Lee
    • KR, issued, 10-1152525

Programs

  • 모바일 응용 SW 화면 내부 흐름 편집기 (Mobile Application Software Display Inner Flow Editor)
    • 조호진(Hojin Cho)
    • KR, registered for a program, 2008-01-174-000168

Awards

  • Aug. 2015 : Winner of five ICDAR 2015 Robust Reading Competitions (Task 1.4 Born-Digital End-to-End (Strong), Task 2.4 Focused Text End-to-End (Weak), Task 3.4 Video Text End-to-End (second best performing method), Task 4.1 Incidental Scene Text Localisation, Task 4.4 Incidental Text End-to-End (Strong))
    https://sites.google.com/site/nucl23/home/ICDAR2015_certificate_task%201.4.jpg?attredirects=0 https://sites.google.com/site/nucl23/home/ICDAR2015_certificate_task%202.4.jpg?attredirects=0 https://sites.google.com/site/nucl23/home/ICDAR2015_certificate_task%203.4.jpg?attredirects=0 https://sites.google.com/site/nucl23/home/ICDAR2015_certificate_task%204.1.jpg?attredirects=0 https://sites.google.com/site/nucl23/home/ICDAR2015_certificate_task%204.4.jpg?attredirects=0
  • Nov. 2014 : 포스코(POSCO) Start-up Day 대상 - StradVision
  • Oct. 2014 : Pacific Graphics 2014 Best Paper Award
  • Jul. 2013 : SIGGRAPH 2013 Student Research Competition (SRC) Semi-finalist
  • Jun. 2013 : 2013 한국컴퓨터종합학술대회 (KCC 2013) 우수논문상
  • Jun. 2012 : 2012 한국컴퓨터종합학술대회 (KCC 2012) 최우수논문상
  • Nov. 2006 : Silver prize (Ranked at 9) at ACM-ICPC (International Collegiate Programming Contest) Asia Seoul Regional Contest
  • May. 2006 : Prize for encouragement at KISA (Korea Information Security Agency) Hacking Defence Contest
  • May. 2006 : 3rd place at HUST Hacking Festival
  • Nov. 2005 : Bronze prize (Ranked at 8) at ACM-ICPC (International Collegiate Programming Contest) Asia Seoul Regional Contest
  • May. 2004 : Prize for excellence at the 5th POSTECH Programming Contest
  • Nov. 2004 : The first prize at ACM-ICPC (International Collegiate Programming Contest) Asia Seoul Regional Online Preliminary Contest
  • Oct. 2003 : Bronze prize (Ranked at 10) at ACM-ICPC (International Collegiate Programming Contest) Asia Seoul Regional Contest
  • May. 2003 : The first prize at the 4th POSTECH Programming Contest

Exhibition

  • Feb. 27-Mar. 2, 2016 : StradVision, Inc. (with KT corporation), Mobile World Congress (MWC) 2016, Barcelona, Spain
  • Mar. 2-5, 2015 : StradVision, Inc., Mobile World Congress (MWC) 2015, Barcelona, Spain
  • Mar. 14-16, 2012 : POSTECH CG Lab., 세계 보안 엑스포 2012 (World Security Expo), Ilsan, Korea
  • Dec. 16-18, 2010 : POSTECH CG Lab., SIGGRAPH Asia 2010, Seoul, Korea

Teaching

  • Fall, 2011 : Computer Graphics (CSED451), Teaching Assistant
  • Spring, 2010 : Computer Architecture (CSED311), Teaching Assistant
  • Spring, 2009 : Computer Graphics (CSED451), Teaching Assistant
  • Spring, 2008 : Software Engineering (EECE507), Teaching Assistant
  • Fall, 2007 : Software Design Methods (CSED332), Teaching Assistant
  • Spring, 2007 : Introduction to Computing (CSED101), Teaching Assistant

Projects

  • Jan. 2014 ~ Aug. 2014 : "스마트폰용 BCR을 위한 이미지 전처리 기술 개발", (주)디오텍
  • Mar. 2012 ~ Dec. 2013 : "실시간 영상 디블러링", 삼성전자(주) Imaging Device Lab.
    • "Real-time Deblurring", Samsung Electronics
  • Mar. 2009 ~ Feb. 2012 : "영상 및 비디오 콘텐츠를 위한 계산사진학 기술 개발", 지식경제부
    • "Development of Computational Photography Technologies for Image and Video Contents", Korea Ministry of Knowledge Economy
  • Aug. 2011 ~ Dec. 2011 : "카메라 및 내시경에서의 코드화된 조명 컨트롤을 통한 화질 개선", 삼성전자(주) Media Processing Lab.
  • Jul. 2010 ~ Sep. 2011 : "멀티프레임 비균일 모션 디블러링", 삼성종합기술원
    • "Non-uniform Motion Deblurring using Multiple Frames", Samsung Advanced Institute of Technology (SAIT)
  • Jan. 2010 ~ Aug. 2010 : "CCTV에서 훼손영상 및 저해상도 영상복원을 위한 영상처리기술연구", 한국전자통신연구원 (ETRI)
  • Mar. 2009 ~ Feb. 2011 : "CUDA 소스 오류 자동 검출기 개발을 위한 CUDA 특성 분석", 서울대학교 산학협력단
    • "CUDA Programming Assist Tool Development", Seoul National University
  • Jul. 2008 ~ Dec. 2008 : "HW-SW 동시공학 기법의 SW융합 산업제품 개발적용 연구", 한국소프트웨어진흥원
  • Mar. 2007 ~ Nov. 2007 : "통합 정보처리 시스템 연구", BK21 사업단 - 시스템 분석
  • Jan. 2008 ~ May. 2008 : "POSCO App. Framework 지원 설계 자동화 도구 개발", POSCO - 정정 도메인 분석
  • Mar. 2007 ~ Feb. 2008 : "다중 플랫폼 지원 모바일 응용 SW 개발환경 기술 개발", 지식경제부 - 아키텍처 패턴 개발

Last modified: March 7, 2016.
This page is maintaied by Hojin Cho ( E-mail: NUCL23 _AT_ postech.ac.kr
NUCL23 _AT_ gmail.com
)