Augmenting physical avatars using projector-based illumination
Augmenting physical avatars using projector-based illumination
复制标题
使用基于投影仪的照明增强物理头像
DOI：
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复制
发表时间：
2013
影响因子：
6.2
通讯作者：
M. Gross
中科院分区：
文献类型：
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作者：
Amit H. Bermano;Philipp Brüschweiler;Anselm Grundhöfer;D. Iwai;B. Bickel;M. Gross
动画电子数字是一种独特的方式，使物理存在的一个字符。然而，由于机械的限制，它们的运动和表达往往受到限制。在本文中，我们提出了一个完整的过程中使用基于投影仪的照明增强物理化身，显着提高他们的表现力。给定一个输入动画，系统将运动分解为低频运动和高频细节，低频运动可以由电子动画头物理再现，高频细节使用投影着色添加。其核心是一个时空优化过程，它在梯度空间中压缩运动，确保忠实的运动回放，同时尊重系统的物理限制。我们还提出了一个完整的多摄像机和投影系统，包括一个新的离焦投影和次表面散射补偿方案。我们的系统的结果是一个高度表现力的物理化身，具有面部细节和运动，否则由于物理约束而无法实现。
Animated animatronic figures are a unique way to give physical presence to a character. However, their movement and expressions are often limited due to mechanical constraints. In this paper, we propose a complete process for augmenting physical avatars using projector-based illumination, significantly increasing their expressiveness. Given an input animation, the system decomposes the motion into low-frequency motion that can be physically reproduced by the animatronic head and high-frequency details that are added using projected shading. At the core is a spatio-temporal optimization process that compresses the motion in gradient space, ensuring faithful motion replay while respecting the physical limitations of the system. We also propose a complete multi-camera and projection system, including a novel defocused projection and subsurface scattering compensation scheme. The result of our system is a highly expressive physical avatar that features facial details and motion otherwise unattainable due to physical constraints.