Publications

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Contents

International Journals

2021

31. Hyuk Jin Kwon, Hyung Il Koo, Jaewoo Park and Nam Ik Cho, "Multistage Probabilistic Approach for the Localization of Cephalometric Landmarks," in IEEE Access 2021.


2020

30. Junho Jo, Hyung Il Koo, Jae Woong Soh and Nam Ik Cho, "Handwritten Text Segmentation via End-to-End Learning of Convolutional Neural Networks," in Multimedia Tools and Applications 2020.

29. Jaewoo Park, Eunji Lee, Yoonsik Kim, Isaac Kang, Hyung Il Koo and Nam Ik Cho, "Multi-Lingual Optical Character Recognition System Using the Reinforcement Learning of Character Segmenter," in IEEE Access 2020.


2019

28. Beom Geun Cho, Dong Gun Kam and Hyung Il Koo, "Mixed-Signal Escape Routing Algorithm for Multilayer PCBs," in IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 9, no. 8, pp. 1576-1586, Aug. 2019.


2017

27. Byeongyong Ahn, Jewoong Ryu, Hyung Il Koo, and Nam Ik Cho, "Textline Detection in Degraded Historical Document Images," EURASIP Journal on Image and Video Processing, Dec. 2017

26. Seon Heo, Hyung Il Koo, and Nam Ik Cho, "Open contour tracking using a new state space model and nonrigid motion training," IEEE Transactions on Circuits and Systems for Video Technology, vol. 27, no. 11, pp. 2355-2366, Nov. 2017 http://ispl.snu.ac.kr/hsfra111/opencontour/

25. Shin Gon Kim, Hyeon Gi Jeon, and Hyung Il Koo, "Deep-learning based License Plate Detection Method using Vehicle Region Extraction," Electronics Letters, vol. 53, no. 15, pp. 1034-1036, July 2017

24. Jaehyun An, Hyung Il Koo and Nam Ik Cho, "Rectification of planar targets using line segments," Machine Vision and Applications, Volume 28, Issue 1, pp 91–100, Feb 2017 http://ispl.snu.ac.kr/jhahn/LsdRectification/


2016

23. Hyung Il Koo, “Multiorientation/multiscript scene text detection based on projection profile analysis and graph segmentation,” SPIE Journal of Electronic Imaging, Vol. 25, No. 3, 2016.

22. Hyung Il Koo, "Text-line Detection in Camera-captured Document Images using the State Estimation of Connected Components," IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 25, NO. 11, NOVEMBER 2016 http://ispl.snu.ac.kr/hikoo/curvedtext/

21. Hyung Il Koo and Nam Ik Cho, "Robust skew estimation using straight lines in document images," Journal of Electronic Imaging. Vol. 25, No. 3, pp. 033014, Jun 2016 http://ispl.snu.ac.kr/hikoo/skewestimation/

20. Young Gyun Kim and Hyung Il Koo, "Graph-Based Approach to Scene Text Localization and Tracking in Videos," Electronics Letters, vol. 52, no. 13, pp. 1110-1112, Jun 2016


2015

19. Beom Su Kim, Hyung Il Koo, and Nam Ik Cho, "Document Dewarping via Text-line based Optimization," Pattern Recognition, Vol. 48, No. 11, pp. 3600 - 3614, Nov. 2015. http://ispl.snu.ac.kr/bskim/DocumentDewarping/

18. Byeongyong Ahn, Hyung Il Koo, Hong Il Kim, Jichull Jeong, and Nam Ik Cho, "Efficient Unwrap Representation of Faces for Video Editing," IEEE Signal Processing Letters, Vol. 22, No. 10, pp. 1718 - 1722, Oct. 2015.

17. Jewoong Ryu, Hyung Il Koo, and Nam Ik Cho, "Word Segmentation Method for Handwritten Document based on Structured Learning," IEEE Signal Processing Letters, Vol. 22, No. 8, pp. 1161-1165, Aug. 2015.

16. Jaehyun An, Beom Su Kim, Hyung Il Koo, and Nam Ik Cho, "Unified framework for automatic image stitching and rectification," Journal of Electronic Imaging. Vol. 24, No. 3, pp. 033007, May 2015

15. Wonkyo Seo, Hyung Il Koo, and Nam Ik Cho, "Junction-based Table Detection in Camera-captured Document Images", International Journal on Document Analysis and Recognition, Vol. 18, No. 1, pp 47-57, Mar. 2015.


2014

14. Jewoong Ryu, Hyung Il Koo, and Nam Ik Cho, "Language-independent Text-line Extraction Algorithm for Handwritten Documents", IEEE Signal Processing Letters, Vol. 21, No. 9, pp. 1115-1119, Sep. 2014


2013

13. Hyung Il Koo and Duckhoon Kim, Scene text detection via connected component clustering and nontext filtering (IEEE TRANSACTIONS ON IMAGE PROCESSING) - 2013.06

12. Hyung Il Koo, Segmentation and Rectification of Pictures in the Camera-Captured Images of Printed Documents (IEEE TRANSACTIONS ON MULTIMEDIA) - 2013.04 http://ispl.snu.ac.kr/hikoo/picture/

11. Hyung Il Koo and Nam Ik Cho, Skew estimation of natural images based on a salient line detector (JOURNAL OF ELECTRONIC IMAGING) http://ispl.snu.ac.kr/~hikoo/tilt/


2012

10. Hyung Il Koo and Nam Ik Cho, "Text-Line Extraction in Handwritten Chinese Documents Based on an Energy Minimization Framework," IEEE Transactions on Image Processing, Vol. 21, No. 3, pp. 1169-1175, March 2012.


2011

09. Hyung Il Koo, and Nam Ik Cho, "Feature-based Image Registration Algorithm for Image Stitching Applications on Mobile Devices," IEEE Transactions on Consumer Electronics, Vol. 57, No. 3, pp. 1303-1310, August 2011.

08. Hyung Il Koo and Nam Ik Cho, "Colorization based on soft segmentation," Journal of Electronic Imaging, March 2011.

07. Hyung Il Koo and Nam Ik Cho, "Design of Interchannel MRF Model for Probabilistic Multichannel Image Processing," IEEE Transactions on Image Processing, Vol.20, Issue 3, pp.601-611, March 2011.


2010

06. Sang-Hak Lee, Hyung Il Koo, and Nam Ik Cho, "Image segmentation algorithms based on the machine learning of features," Pattern Recognition Letters, Vol.31, Issue 14, pp.2325-2336, October 2010.

05. Sang-Hak Lee, Hyung Il Koo, and Nam Ik Cho, "New automatic defect classification algorithm based on a classification-after-segmentation framework," Journal of Electronic Imaging Vol. 19, 020502, June 2010.


2009

04. Hyung Il Koo, Jinho Kim, and Nam Ik Cho, "Composition of a Dewarped and Enhanced Document Image From Two View Images," IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 18, NO. 7, pp. 1551-1562, July 2009.


2007

03. Seong Jong Ha, Hyung Il Koo, Sang Hwa Lee, Nam Ik Cho, and Soo Kyun Kim, "Panorama mosaic optimization for mobile camera systems," IEEE trans. On Consumer Electronics, Vol. 53, No.4, pp. 1217-1225, Nov 2007.

02. Hyung Il Koo, Sang Hwa Lee, and Nam Ik Cho, "A new edi-based deinterlacing algorithm," IEEE trans. On Consumer Electronics, Vol. 53, No.4, pp. 1494-1499, Nov 2007.

01. Hyung Il Koo, Sang Hwa Lee, and Nam Ik Cho, "Bayesian object extraction from uncalibrated image pairs," Signal Processing: Image Communication 22 pp. 866-876, Nov 2007.

International Conferences

2020

29. Hyuk Jin Kwon, Hyung Il Koo and Nam Ik Cho, "Improving Explainability of Integrated Gradients with Guided Non-Linearity," ICPR 2020.


2019

28. Hyuk Jin Kwon, Hyung Il Koo, Jae Woong Soh and Nam Ik Cho, "Age Estimation Using Trainable Gabor Wavelet Layers in A Convolutional Neural Network," in IEEE International Conference on Image Processing (ICIP) 2019.


2018

27. Seok Hee Lee, Sepidehsadat Hosseini, Hyuk Jin Kwon, Jaewon Moon, Hyung Il Koo and Nam Ik Cho, "Age and Gender Estimation Using Deep Residual Learning Network," in International Workshop on Advanced Image Technology (IWAIT) 2018.

26. Sepidehsadat Hosseini, Seok Hee Lee, Hyuk Jin Kwon, Hyung Il Koo and Nam Ik Cho, "Age and Gender Classification Using Wide Convolutional Neural Network and Gabor Filter," in International Workshop on Advanced Image Technology (IWAIT)

25. Taeho Kil, Hyung Il Koo and Nam Ik Cho, "Scene Text Rectification Using Glyph and Character Alignment Properties," in 24th International Conference on Pattern Recognition (ICPR) 2018.


2017

24. Hyuk Jin Kwon, Seok Hee Lee, Sepidehsadat Hosseini, Jaewon Moon, Hyung Il Koo and Nam Ik Cho, "Multiple Face Tracking Method in the Wild Using Color Histogram Features," in IEEE International Symposium on Signal Processing and Information Technology (ISSPIT) 2017.

23. Taeho Kil, Wonkyo Seo, Hyung Il Koo, and Nam Ik Cho, "Robust document image dewarping method using text-lines and line segments," ICDAR 2017, November, 2017 (https://github.com/xellows1305/Document-Image-Dewarping)


2016

22. Hyung Il Koo, Beom Su Kim, Young Ki Baik and Nam Ik Cho, "Fast and Simple Text Replacement Algorithm for Text-based Augmented Reality," VCIP 2016, November 2016.

21. So Yeon Kim, Bum Geun Jo, Yong Seok Heo and Hyung Il Koo, "Augmented reality system for rectangular objects," ICCE-Asia 2016, October 2016.


2014

20. Seon Heo, Hyung Il Koo, and Nam Ik Cho , "Preprocessing method for region-of-interest video call compression," APSIPA 2014, December 2014.

19. Byeongyong Ahn, Hyung Il Koo, and Nam Ik Cho, “Image Registration Algorithm based on Regular Sparse Correspondences and SIFT”, APSIPA 2014, December 2014.


2013

18. Seon Heo, Hyung Il Koo, Hong Il Kim, and Nam Ik Cho , "Human Segmentation Algorithm for Real-time Video-call Applications," APSIPA 2013, November 2013.


2010

17. Beom Su Kim, Hyung Il Koo, and Nam Ik Cho, "A new image projection method for panoramic image stitching," MMSP 2010, October 2010.

16. Sang Hak Lee, Hyung Il Koo and Nam Ik Cho, "A VIDEO OBJECT SEGMENTATION ALGORITHM BASED ON THE FEATURE LEARNING AND SHAPE TRACKING," ICIP 2010, September 2010.

15. Hyung Il Koo and Nam Ik Cho, "State estimation in a document image and its application in text block identification and text line extraction," European Conference on Computer Vision (ECCV) 2010, September http://ispl.snu.ac.kr/hikoo/layout/

14. Hyung Il Koo and Nam Ik Cho, "Rectification of figures and photos in document images using bounding box interface," IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2010), June 2010.


2009

13. Sang Hak Lee, Hyung Il Koo, and Nam Ik Cho, "An unsupervised image segmentation algorithm based on the machine learning of appropriate features," ICIP 2009, November 2009.

12. Hyung Il Koo, Jung Gap Kuk, and Nam Ik Cho, "Eliminating structure misalignments using robust matching and image editing based on seam carving," ICIP 2009, November 2009.

11. Hyung Il Koo and Nam Ik Cho, "Graph cuts using a Riemannain metric induced by tensor voting," ICCV 2009, September 2009.

10. Hyung Il Koo, Beom Su Kim, and Nam Ik Cho, "A new method to find an optimal warping function in image stitching," ICASSP 2009, April 2009.


2008

09. Hyung Il Koo, Jung Gap Kuk, and Nam Ik Cho, "Non-rigid image registration based on the globally optimized correspondences," ICPR, December 2008.

08. Hyung Il Koo, and Nam Ik Cho, "Boosting image segmentation," IEEE International Conference on Image Processing, 12~15, October 2008.

07. Jinho Kim, Hyung Il Koo, and Nam Ik Cho, "Camera-based document digitization using multiple images," IEEE International Conference on Image Processing, 12~15, October 2008.

06. Hyung Il Koo and Nam Ik Cho, "Image denoising based on a statistical model for wavelet coefficients," ICASSP 2008, May 2008.

05. Seong Jong Ha, Hyung Il Koo, Sang Hwa Lee, Nam Ik Cho, and Soo Kyun Kim, "Real-time embedded panorama mosaic system for digital camera," ICCE, Jan 2008.


2007

04. Hyung Il Koo and Nam Ik Cho, "Prior model for the MRF modeling of multi-channel images," IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Honolulu, USA, April 2007.


2006

03. Sang Hwa Lee, Hyung Il Koo, Nam Ik Cho, and Jong-il Park, "Stochastic approach to separate diffuse and specular reflections," IEEE ICIP, Atlanta, USA, Oct 2006.

02. Hyung Il Koo, Sang Hwa Lee, Nam Ik Cho, Seong Keun Kim, Dong Hahk Lee, and Sunghoon Lee, "Map-based object extraction from uncalibrated image pair," IEEE International conference on image processing (ICIP), Atlanta, USA, Oct 2006.


2003

01. Hyung Il Koo and Nam Ik Cho, "A relevance feedback algorithm based on the clustering and Parzen window," IEEE ICIP, Sep 2003.

Domestic Conferences

2020

26. 이건수, 이호창, 심재훈, 구형일, 조남익, "네트워크 이상치 탐지를 위한 정상 데이터만을 활용한 메모리 기반 정상성 학습," 한국방송미디어공학회 추계학술대회, pp. 83-86, 2020.

25. 신동원, 위경수, 구정모, 성시현, 구형일, "Convolution Neural Network 를 이용한 차량 내부 센서 기반 풀린 휠 너트의 개수 추정 알고리즘," 제 30회 신호처리합동학술대회 2020.


2019

24. 김민상, 김용균, 구정모, 황상필, 구형일, "임베디드화 고려한 인공지능 알고리즘 최적화 기법 선행연구," 2019 한국자동차공학회 추계학술대회 및 전시회 2019.


2018

23. 한상유, 구형일, "평활화와 Convolutional neural network를 이용한 결함 웨이퍼 검출 기법", 2018년 제 30회 영상처리 및 이해에 관한 워크샵, February 2018.


2016

22. 구형일, 조범근, "교차점 특징 기반 서식 처리 알고리즘," 2016년 대한전자공학회 추계학술대회, November 2016.

21. 김신곤, 구형일, "CNN을 이용한 인서트의 결함 검출," 2016년 대한전자공학회 하계종합학술대회, June 2016.

20. 정상교, 구형일, "제품 영상의 컬럼 correlation 분석을 통한 제품 표면결함 검출 시스템," 2016년 대한전자공학회 하계종합학술대회, June 2016.

19. 정상교, 구형일, "라인스캐너를 통해 획득한 이미지의 텍스트 매칭 시스템," 2016년 한국통신학회 동계학술대회, January 2016.


2015

18. 김용균, 구형일, "비디오 영상에서 텍스트 검출 및 텍스트 추적," 2015년 대한전자공학회 추계학술대회, November 2015.

17. 김신곤, 구형일, "다항식 근사를 통한 인서트의 깨짐 영역 검출 알고리즘", 2015년 제 27회 영상처리 및 이해에 관한 워크샵, February 2015.


2014

16. 안재현, 구형일, 조남익, “라인 세그먼트를 이용한 평면 영상 rectification 알고리즘,” 제 27회 신호처리합동학술대회, September 2014.

15. 류제웅, 구형일, 조남익, "필기 문서 영상을 위한 단어 분리 알고리즘," 2014 년 제 26 회 영상처리 및 이해에 관한 워크샵, February 2014

14. 김범수, 구형일, 조남익, "텍스트라인의 특성을 고려한 함수 최적화를 통한 문서 평활화 기법," 2014년 제 26회 영상처리 및 이해에 관한 워크샵, February 2014.

13. 노관우, 허선, 구형일, 조남익, "영상 통화를 위한 관심 영역 기반의 동영상 압축 기술," 2014년 제 26회 영상처리 및 이해에 관한 워크샵, February 2014.


2013

12. 길태호, 구형일, 조남익, "차선 검출 기반의 역 투영 변환," 2013년 대한전자공학회 추계학술대회, November 2013.

11. 서원교, 구형일, 이동혁, 김상호, 조남익, "교차점 검출과 분류를 통한 카메라 문서영상에서의 테블 구조 인식 알고리듬," 2013년 한국방송공학회 하계학술대회, June 2013.

10. 허선, 구형일, 조남익, "영상 통화 상황에서 안정적인 사람 영역 검출 방법," 2013년 한국방송공학회 하계학술대회, June 2013.

09. 황인성, 구형일, 조남익, "색변환을 위한 후보 목적 영상 검색 알고리즘," 2013년 제25회 영상 처리 및 이해에 관한 워크샵, February 2013.


2010

08. 구형일, 조남익, "카메라로 취득한 문서영상의 보정과 분할," 영상처리 및 이해에 관한 워크샵, January 2010.


2009

07. 김범수, 구형일 ,조남익, "파노라마 영상 합성을 위한 새로운 영상 투영 방법," 22회 신호처리합동학술대회, September 2009.

06. 이상학, 구형일, 조남익, "영역 분류기 기반의 자율적 영상 영역화," 영상처리 및 이해에 관한 워크샵, February 2009.

05. 김홍일, 진보라, 구형일, 이상화, 조남익, "직렬 분류기를 위한 이중 강 분류기 구조," 영상처리 및 이해에 관한 워크샵, February 2009.


2008

04. 구형일, 조남익, "학습 기계를 사용한 이미지 영역분할," 제 20회 영상처리 및 이해에 관한 워크샵 IPIU), 2008년 2월 (20일-22일)


2007

03. 김진호, 구형일, 조남익, "다중 촬영을 통한 카메라 기반 문서영상 평활화," 신호처리 합동학술대회, 경북대학교, 2007년, 10월.


2006

02. 이상화, 구형일, 국중갑, 조남익, 김성근, 이동학, 이성훈 , "SIFT를 이용한 영상검색 및 영상분할 ," 영상처리및이해에관한워크샵 , 2006년 1월 .


2003

01. 구형일, 조남익 , "주파수 분석을 통한 인버스 텔레시네 기법 ," 제16회 신호처리합동학술대회, pp. 732 - 735 , 2003년 9월 .

Domestic Journals

04. 김용균, 구형일, 강석원, 김준원, 김재관, "단안 카메라와 저정밀 GPS-IMU 신호를 융합한 맵매칭 방법," 한국산학기술학회 논문지, 19(4), 34-40, 2018년 4월.

03. 최홍철, 구형일, 김기훈, 김재우, 한철희, "분산 네트워크 환경에서 무선 In-band backhaul을 통한 이동성 지원 방안," 한국정보통신학회논문지, 21(12), 2261-2269, 2017년 12월.

02. 나동엽, 구형일, 박용배, 이재기, 이경훈, 황인호, "모드 탐색 알고리즘을 이용한 측정치 기반의 전파 환경 시각화 기법," 한국전자파학회논문지, vol. 25, no. 3, pp. 296-303, 2014년 3월.

01. 구형일, 조남익, "주파수 분석을 통한 인버스 텔레시네 기법," 방송공학회논문지, 8권, 3호, 2003년 9월.

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