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Adaptive Keyframe and ROI selection for Real-time Video Stabilization
배주한(Bae, Ju-Han),황영배(Hwang, Young-Bae),최병호(Choi, Byung-Ho),전재열(Chon, Je-Youl) 한국방송·미디어공학회 2011 한국방송공학회 학술발표대회 논문집 Vol.2011 No.11
Video stabilization is an important image enhancement widely used in surveillance system in order to improve recognition performance. Most previous methods calculate inter-frame homography to estimate global motion. These methods are relatively slow and suffer from significant depth variations or multiple moving object. In this paper, we propose a fast and practical approach for video stabilization that selects the most reliable key frame as a reference frame to a current frame. We use optical flow to estimate global motion within an adaptively selected region of interest in static camera environment. Optimal global motion is found by probabilistic voting in the space of optical flow. Experiments show that our method can perform real-time video stabilization validated by stabilized images and remarkable reduction of mean color difference between stabilized frames.
공급사슬관리 개념을 적용한 건설프로젝트 정보시스템 개선방안
박상우,박상준,전재열,김창덕 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1
During recent years, the supply chain has become a major subject of management research and manufacturing theory. It has been represented by concepts like lean production, total quality management and just-in-time production in construction industry. The development of construction information system almost focused to the improvement of management ability in site. it is limited to the improvement of project outcome that the usefulness of information system is defined to in site. It is important that a lot of information transfer smoothly and share through information system. Therefore, this study aimed to propose the scope of application and the improvement directions for construction project information system with applying Supply Chain Management concept by curtain wall engineering case study.