Robotics and Computer Vision Lab

Publications

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저 자 Pierre Gurdijos, Jun-sik Kim, In So Kweon
학 회 Proceeding of the IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
논문일시(Year) 2006
논문일시(Month) 07
Plane-based calibration is now a very popular procedure because of its flexibility. One key step consists in detecting a set of coplanar features, from which the Euclidean structure of the corresponding 3D plane has to be computed. We suggest to use confocal conics as calibration targets, as they offer undeniable advantages over other ones (e.g., points or lines) in terms of detection and estimation, especially in the presence of partial occlusion. We introduce important projective and Euclidean properties of the linear family of conics (i.e., the confocal conic range), spanned by two confocal conics. In particular, we rely on the fact that the circular point-envelope – a rank-2 conic that encodes the 2D Euclidean structure – is a degenerate member of any confocal conic range. This allows us to give closed-form solutions in three cases: one conic with known foci, two confocal conics with known product of ratios of semi axes, and two unknown confocal conics. The performances of the proposed algorithms (consisting of a few lines of Matlab-like code) show up high accuracies for both intrinsic and extrinsic camera parameters. In addition to experiments with synthetic data, a video sequence is processed, showing off the interest of using confocal conics as calibration targets, for augmented reality purposes.

List of Articles
» Euclidean Structure from Confocal Conics: Theory and Application to Camera Calibration
Pierre Gurdijos, Jun-sik Kim, In So Kweon
Proceeding of the IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2006 / 07
69. Terrain Classification Using Texture Recognition for Autonomous Robot
Hanbyul Joo, In So Kweon
The 4th International Conference on Ubiquitous Robots and Ambient Intelligence(URAI) 2007 / 11
68. 동심원의 투영 불변 특성을 이용한 카메라 보정
Jun-sik Kim, In So Kweon
13th Workshop on Image Processing and Image Understanding (IPIU) 2001 / 01
67. Simultaneous Plane Extraction and 2D Homography Estimation using Local Feature Transformations
Ouk Choi, Hyeongwoo Kim, In So Kweon
Asian Conference on Computer Vision 2007 / 11
66. 2-D object recognition using invariant contour descriptor and projective refinement
Kyoungsig Roh, In So Kweon
Pattern Recognition 1998 / 05
65. A hybrid pyramid-based motion estimation algorithm under illumination variations
Youngsu Moon, In So Kweon
12th Workshop on Image Processing and Image Understanding (IPIU) 2000 / 01
64. Real-time face tracking using adaptive color model
Gijeong Jang, In So Kweon
12th Workshop on Image Processing and Image Understanding (IPIU) 2000 / 01
63. Robust Feature Matching for Loop Closing and Localization
Jungho Kim, In So Kweon
IEEE/RSJ International Conference on Robots and Systems 2007 / 10
62. Feature Matching for Loop Closing
Jungho Kim, In So Kweon
The 13th International Conference on Advanced Robotics 2007 / 08
61. A new technique for shot detection and key frames selection in histogram space
Seunghoon Han, Kukjin Yoon, In So Kweon
12th Workshop on Image Processing and Image Understanding (IPIU) 2000 / 01
60. Map-based probabilistic reasoning to vehicle segmentation
Joonwoong Lee, In So Kweon
Pattern Recognition 1998 / 12
59. Moving object segmentation with accurate boundary using color and motion
Kukjin Yoon, In So Kweon
12th Workshop on Image Processing and Image Understanding (IPIU) 2000 / 01
58. Direct estimation of 3-D motion and scene depth from stereo image sequences
Seongkee Park, In So Kweon
12th Workshop on Image Processing and Image Understanding (IPIU) 2000 / 01
57. 가상 영상면을 이용한 영상기반 비주얼 서보잉
Howon Kim, Jaeseung Cho, In So Kweon
14th Korea Automatic Control Conference (KACC) 1999 / 10
56. 영상 특징의 위치와 각도를 이용한 새로운 비쥬얼 서보잉 방법
Jaeseung Cho, In So Kweon
14th Korea Automatic Control Conference 1999 / 10
55. 각도 정보를 이용한 가변 카메라하에서의 새로운 카메라 보정 알고리듬
Jongeun Ha, In So Kweon
14th Korea Automatic control Conference (KACC) 1999 / 10
54. Biprism에 의한 새로운 스테레오 카메라 시스템
Doohyun Lee, In So Kweon
10th Workshop on Image Processing and Image Understanding (IPIU) 1998 / 01
53. 직선추출 알고리즘의 실시간 구현
Hakseo Oh, Joonwoong Lee, In So Kweon
9th Workshop on Image Processing and Image Understanding (IPIU) 1997 / 01
52. 영상처리를 이용한 차량의 검지
Youngsu Moon, Sangchul Jung, In So Kweon, 이기원
제어계측연구회, 로보틱스 및 자동화연구회 합동학술발표회 1996 / 04
51. 노이즈가 존재하는 영상 시퀀스에서의 운동물체추적
Dongjoong Kang, In So Kweon
8th Workshop on Image Processing and Image Understanding (IPIU) 1996 / 01
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