Robotics and Computer Vision Lab

Publications

Extra Form
저 자 Younggeun Kim, Venkata RavisanKar Jayanthi, In So Kweon
학 회 IEEE Transactions on Circuits and Systems for Video Technology (CSVT)
BidTex Ref Issue Date: Oct. 2011 Volume: 21 Issue:10 On page(s): 1401 - 1414 ISSN: 1051-8215
논문일시(Year) 2011
논문일시(Month) 10
Majority of CMOS image sensors in consumer market utilize a rolling shutter to increase sensitivity. However, it causes severe distortions, such as jitter, wobble, or skew. Since most of these kinds of sensors are used in hand-held devices, the approach of undistorting and generating stabilized images is restricted to resource limited systems. It has also been one of the major challenges to have a mathematical representation of CMOS rolling effect depicting the practical scenario, while keeping accuracy and stability. We propose that a CMOS sensor can be modeled by a section-wise charge-coupled devices model which has multiple homographies and exploit the  observation that rolling shutter mechanism gives close relationships among them. We present a CMOS seven-parameter model, and show video stabilization algorithm by the iterative parameter estimation technique. We address four issues while accelerating our stabilization algorithm within resource limited environment: accuracy, stability, computation time, and resource utilization. We developed cache based optimization techniques to meet the requirement of the memory bandwidth and computational time for the iterative parameter estimation and final output image interpolation, and also proposed the incremental form of the seven-parameter model to greatly reduce resource consumption while maintaining the same results as the previous. The validity and effectiveness of our approach is demonstrated by experiments for different types of camera motions. The cache based optimization technique can be used to accelerate other types of iterative vision algorithms that require repetitive memory access: feature tracking, motion estimation, motion compensation, various types of image distortion correction, and also image warping and scaling.

List of Articles
405. A Simple and Real-Time Moving Object Detection Invariant to Cast Shadow
Tae-Hyun Oh, In So Kweon
The 11th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI) 2014 / 11
404. A Fusion Approach for Robust Visual Object Tracking in Crowd Scenes
Tae-Hyun Oh, Kyungdon Joo, Junsik Kim, Jaesik Park, In So Kweon
The 11th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI) 2014 / 11
403. Geometric Calibration of Micro-Lens-Based Light-Field Cameras using Line Features
Yunsu Bok, Hae-Gon Jeon, In So Kweon
European Conference on Computer Vision (ECCV) 2014 / 09
402. Extrinsic Calibration of 2D Laser Sensors
Dong-Geol Choi, Yunsu Bok, Jun-sik Kim, In So Kweon
International Conference on Robotics & Automation (ICRA) 2014 / 05
401. Extrinsic Calibration of Non-overlapping Camera-Laser System using Structured Environment
Yunsu Bok, Dong-Geol Choi, Pascal Vasseur, In So Kweon
IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) 2014 / 09
400. 깊은 신경망을 통한 사용자 머리 자세 추정
Byungtae Ahn, In So Kweon
제9회 한국로봇종합학술대회 2014 / 06
399. GMM-based Saliency Aggregation for Calibration-free Gaze Estimation
Jinsoo Choi, Byungtae Ahn, Jaesik Park, In So Kweon
International Conference on Image Processing (ICIP) 2014 / 10
398. Cost-Aware Depth Map Estimation for Lytro Camera
Min Jung Kim, Tae-Hyun Oh, In So Kweon
International Conference on Image Processing (ICIP) 2014 / 10
397. Balanced Optical Flow Refinement by Bidirectional Constraint
Jongwon Choi, Hyeongwoo Kim, Tae-Hyun Oh, In So Kweon
International Conference on Image Processing (ICIP) 2014 / 10
396. Auto-adjusting Camera Exposure for Outdoor Robotics using Gradient Information
Inwook Shim, Joon-Young Lee, In So Kweon
IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) 2014 / 09
395. Rao-Blackwellized Particle Filtering with Gaussian Mixture Models for Robust Visual Tracking
Jungho Kim, Zhe Lin, In So Kweon
Computer Vision and Image Understanding 2014 / 04
394. Color Transfer using Probabilistic Moving Least Squares
Youngbae Hwang, Joon-Young Lee, In So Kweon, Seon Joo Kim
IEEE International Conference on Computer Vision and Pattern Recognition (CVPR) 2014 / 06
393. Exploiting Shading Cues in Kinect IR Images for Geometry Refinement
Gyeongmin Choe, Jaesik Park, Yu-Wing Tai, In So Kweon
IEEE International Conference on Computer Vision and Pattern Recognition (CVPR) 2014 / 06
392. Calibrating a non-isotropic near point light source using a plane
Jaesik Park, Sudipta N. Sinha, Yasuyuki Matsushita, Yu-Wing Tai, In So Kweon
IEEE International Conference on Computer Vision and Pattern Recognition (CVPR) 2014 / 06
391. Rain/Snow Removal via Low-rank and Sparse Optimization
Rockhun Do, Tae-Hyun Oh, In So Kweon
Book Chapter of Digital Signal Processing for In-Vehicle Systems and Safety 2014 / 02
390. 구조적인 환경에서 3차원 직선을 이용한 평면 복원
Kyungdon Joo, Tae-Hyun Oh, Hyeongwoo Kim, In So Kweon
제 26 회 영상처리 및 이해에 관한 워크샵 (IPIU 2014) 2014 / 02
389. 강인한 보행자 검출을 위한 계층적 분류기 모델
Soonmin Hwang, Tae-Hyun Oh, In So Kweon
제 26회 영상처리 및 이해에 관한 워크샵 (IPIU 2014) 2014 / 02
388. 도로 상의 특징점을 이용한 단일 카메라 기반의 차량 자세 추정
Jongwon Choi, Tae-Hyun Oh, In So Kweon
제 26 회 영상처리 및 이해에 관한 워크샵 (IPIU 2014) 2014 / 02
387. 다중 정보 융합 비용 체적을 이용한 라이트 필드 카메라에서의 깊이지도 추정
Min Jung Kim, Tae-Hyun Oh, In So Kweon
제 26 회 영상처리 및 이해에 관한 워크샵 (IPIU 2014) 2014 / 02
386. PRISM: A System for Weighted Multi-Color Browsing of Fashion Products
Donggeun Yoo, Kyunghyun Paeng, Sunggyun Park, Jungin Lee, Seungwook Paek, Sung-Eui Yoon, In So Kweon
International World Wide Web Conference (WWW) Companion 2014 / 04
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