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Video Motion Stylization by 2D Rigidification

Abstract : This paper introduces a video stylization method that increases the apparent rigidity of motion. Existing stylization methods often retain the 3D motion of the original video, making the result look like a 3D scene covered in paint rather than a 2D painting of a scene. In contrast, traditional hand-drawn animations often exhibit simplified in-plane motion, such as in the case of cutout animations where the animator moves pieces of paper from frame to frame. Inspired by this technique, we propose to modify a video such that its content undergoes 2D rigid transforms. To achieve this goal, our approach applies motion segmentation and optimization to best approximate the input optical flow with piecewise-rigid transforms, and re-renders the video such that its content follows the simplified motion. The output of our method is a new video and its optical flow, which can be fed to any existing video stylization algorithm.
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https://hal.inria.fr/hal-02106047
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Submitted on : Monday, April 22, 2019 - 2:33:26 PM
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Johanna Delanoy, Adrien Bousseau, Aaron Hertzmann. Video Motion Stylization by 2D Rigidification. Expressive 2019 - 8th ACM/ Eurographics Proceedings of the Symposium, May 2019, Genoa, Italy. ⟨hal-02106047⟩

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