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• W2964051148 abstract "Video deblurring is a challenging problem as the blur is complex and usually caused by the combination of camera shakes, object motions, and depth variations. Optical flow can be used for kernel estimation since it predicts motion trajectories. However, the estimates are often inaccurate in complex scenes at object boundaries, which are crucial in kernel estimation. In this paper, we exploit semantic segmentation in each blurry frame to understand the scene contents and use different motion models for image regions to guide optical flow estimation. While existing pixel-wise blur models assume that the blur kernel is the same as optical flow during the exposure time, this assumption does not hold when the motion blur trajectory at a pixel is different from the estimated linear optical flow. We analyze the relationship between motion blur trajectory and optical flow, and present a novel pixel-wise non-linear kernel model to account for motion blur. The proposed blur model is based on the non-linear optical flow, which describes complex motion blur more effectively. Extensive experiments on challenging blurry videos demonstrate the proposed algorithm performs favorably against the state-of-the-art methods." @default.
• W2964051148 created "2019-07-30" @default.
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• W2964051148 date "2017-10-01" @default.
• W2964051148 modified "2023-10-06" @default.
• W2964051148 title "Video Deblurring via Semantic Segmentation and Pixel-Wise Non-linear Kernel" @default.
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• W2964051148 doi "https://doi.org/10.1109/iccv.2017.123" @default.
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