基于场景平面结构的增强现实方法

提出了一种基于场景平面结构的增强现实方法.首先,选定图像序列中的两帧对目标场景进行局部的三维重建;然后,选择场景中某一平面作为处理和跟踪的对象,通过交互指定该平面内矩形的四个顶点作为虚拟对象的嵌入区域并建立局部参考坐标系,从而实现虚拟对象与三维场景的迅速对齐;最后通过鲁棒的场景平面跟踪算法实现虚拟对象在整个图像序列中的真实感嵌入,完全允许嵌入区域被部分遮挡的情况.真实序列图像的实验结果及对算法的分析验证了方法的有效性和可行性.

An Augmented Reality Method Based on Plane Structures

A novel augmented reality method based on a plane structure in the scene is proposed. Firstly, two separate frames in the sequence are selected to partially 3D reconstruct the scene; then the four vertexes of a rectangle on the plane are specified by interactive means, and the local coordinates are established based on the four points, which results in a quickly alignment between the virtual object and the real scene; finally, a robust plane tracking method makes consistent registration for virtual objects on the sequence, even if some parts of the specified area are occluded during the whole process. Some experiments have been conducted to validate the performance and feasibility of the proposed method.