videooodles:在视频上手绘动画与场景感知画布

Emilie Yu, Kevin Blackburn-Matzen, Cuong Nguyen, Oliver Wang, Rubaiat Habib Kazi, A. Bousseau
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引用次数: 5

摘要

我们提出了一个互动系统,以方便创建所谓的视频涂鸦-视频上的艺术家插入手绘动画的娱乐或教育目的。视频涂鸦具有挑战性,因为要让人信服,插入的图画必须看起来好像它们是捕获场景的一部分。特别是,当这些图形相对于摄像机和场景中的其他物体移动时,它们应该经历跟踪、透视变形和遮挡——用现有的2D视频编辑软件很难再现这些视觉效果。我们的系统通过依赖平面画布来支持这些效果,用户将画布放置在从视频重建的3D场景中。此外,我们提出了一种自定义跟踪算法,允许用户将画布锚定到场景中的静态或动态对象上,这样画布就会随着这些对象的位置和方向移动和旋转。在测试我们的系统时,新手可以在十几分钟内创建各种简短的动画剪辑,而专业人士则称赞其与现有工具相比的速度和易用性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
VideoDoodles: Hand-Drawn Animations on Videos with Scene-Aware Canvases
We present an interactive system to ease the creation of so-called video doodles - videos on which artists insert hand-drawn animations for entertainment or educational purposes. Video doodles are challenging to create because to be convincing, the inserted drawings must appear as if they were part of the captured scene. In particular, the drawings should undergo tracking, perspective deformations and occlusions as they move with respect to the camera and to other objects in the scene - visual effects that are difficult to reproduce with existing 2D video editing software. Our system supports these effects by relying on planar canvases that users position in a 3D scene reconstructed from the video. Furthermore, we present a custom tracking algorithm that allows users to anchor canvases to static or dynamic objects in the scene, such that the canvases move and rotate to follow the position and direction of these objects. When testing our system, novices could create a variety of short animated clips in a dozen of minutes, while professionals praised its speed and ease of use compared to existing tools.
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