Sticky Projections-A Model-Based Approach to Interactive Shader Lamps Tracking
Sticky Projections-A Model-Based Approach to Interactive Shader Lamps Tracking
复制标题
粘性投影 - 基于模型的交互式着色器灯跟踪方法
DOI：
10.1109/tvcg.2015.2450934
复制
发表时间：
2016
影响因子：
5.2
通讯作者：
G. Klinker
中科院分区：
文献类型：
--
作者：
Christoph Resch;P. Keitler;G. Klinker
着色器灯可以增强物理对象与投影虚拟复制使用相机投影仪系统，前提是物理和虚拟对象都很好地注册到彼此。在过去，精确的登记和跟踪是一个繁琐和侵入性的过程。本文提出了一种复杂形状物体的交互式跟踪方法。与之前的方法相比，我们的系统是可移动的，并且只使用虚拟复制的投影来跟踪物理对象并“粘贴”投影。我们的方法包括两个阶段，基于结构光模式的快速姿态初始化和基于投影中检测到的特征的非侵入式逐帧跟踪。在跟踪阶段，基于当前姿态预测的辐射校正虚拟摄像机视图被渲染并与捕获的图像进行比较。匹配的特征被三角化，提供一组稀疏的表面点，这些点与虚拟模型对齐。对准变换作为新姿态预测的输入。包括覆盖精度评估在内的详细实验表明，我们的方法可以准确、鲁棒地以交互速率跟踪复杂目标。
Shader lamps can augment physical objects with projected virtual replications using a camera-projector system, provided that the physical and virtual object are well registered to each other. Precise registration and tracking has been a cumbersome and intrusive process in the past. In this paper, we present a new method for tracking complex-shaped physical objects interactively. In contrast to previous approaches our system is mobile and makes solely use of the projection of the virtual replication to track the physical object and “stick” the projection to it. Our method consists of two stages, a fast pose initialization based on structured light patterns and a non-intrusive frame-by-frame tracking based on features detected in the projection. During the tracking phase, a radiometrically corrected virtual camera view based on the current pose prediction is rendered and compared to the captured image. Matched features are triangulated providing a sparse set of surface points that is robustly aligned to the virtual model. The alignment transformation serves as an input for the new pose prediction. Detailed experiments including the evaluation of the overlay accuracy show that our approach can accurately and robustly track complex objects at interactive rates.