基于人眼跟踪的360°悬浮显示系统及其畸变校正方法

360°Floating Display System Based on Human Eye Tracking and Its Distortion Correction Method

传统平面显示技术无法满足360°视角、高分辨率的显示效果。提出了一种基于人眼跟踪的360°悬浮显示系统。利用多摄像头人眼跟踪算法实时获取观察者视点位置,并利用OpenGL生成对应视角画面。为实现360°显示,设计了一种折反射式柱面投影光学系统。为充分利用投影仪有限的分辨率,提出了一种半周显示方案。为显示正确图像,提出了基于贝塞尔曲面的预畸变校正方法和极坐标系转换方法,最终实现了系统360°水平视角和一定范围内垂直视角可视。实验结果表明,所提系统能以高分辨率、低成本的方式实现静态或动态的悬浮显示效果。

The traditional flat-panel display technology cannot satisfy the display effect of 360°viewing angle and high resolution.A 360°floating display system based on human eye tracking is proposed.The multi-camera eye tracking algorithm is used to obtain the observer viewpoint position in real time,and the corresponding view angle picture is generated by OpenGL.In order to realize 360°display,a catadioptric cylindrical projection optical system is designed.In order to make full use of the limited resolution of the projector,a half-circle display scheme is proposed.In order to display the correct image,a predistortion correction method based on Bezier surface and a polar coordinate system conversion method are proposed,and the 360°horizontal viewing angle and vertical viewing angle with a certain range of the system are finally realized.The experimental results show that the proposed system can achieve static or dynamic floating display effects with high resolution and low cost.