Chun Qian

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Global motion estimation (GME) is an important technique in video processing, segmentation, and compression. In this correspondence, we propose a GME algorithm that offers improved accuracy especially in the presence of large-scale zoom. The proposed algorithm is derived from the observation that there exists an ambiguity between translation and zoom for(More)
In this paper, a region-based method is proposed for frame rate up-conversion. To reduce spatial discontinuities and mitigate deformed structures commonly seen in block-based motion-compensated frame interpolation approaches, the proposed method interpolates frames based on depth-ordered moving regions. We develop a 3-parameter motion model to describe(More)
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