한국방송∙미디어공학회:학술대회논문집 (Proceedings of the Korean Society of Broadcast Engineers Conference)
- 한국방송공학회 2011년도 추계학술대회
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- Pages.288-291
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- 2011
실시간 영상 안정화를 위한 키프레임과 관심영역 선정
Adaptive Keyframe and ROI selection for Real-time Video Stabilization
- Bae, Ju-Han (Korea Electronics Technology Institute) ;
- Hwang, Young-Bae (Korea Electronics Technology Institute) ;
- Choi, Byung-Ho (Korea Electronics Technology Institute) ;
- Chon, Je-Youl (Samsung Techwin)
- 발행 : 2011.11.03
초록
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.
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