VR成像中延时效应对视觉的影响及其补偿

通过对人的自然视觉获得机理与虚拟现实技术中头盔显示时的视觉获得机理的对比分析，探讨了以头盔显示器为媒介的视觉获得过程中，影响视觉效果的因素。分析认为：从头部姿态信息的获取到空间图像的显示之间，存在一个固定的、物理性的延时，这一延时严重影响了视觉的逼真感和沉浸感。定性讨论了延时的组成，并就具体实验系统给出了定量确定延时的方法；给出了一种基于递推算法的延时补偿方法。

Delay Effect on Vision and Its Compensation in VR Imaging

This paper discusses and analyzes many factors that affect visions acquired by HMD after comparing the natural vision acquirement with one from virtual environment generated by HMD. It gives the result, there is a fixed, physical time delay from the beginning of getting parameters of head's position and posture to the end of displaying the virtual environment on HMD generated based on the parameters of head's position and posture. The time delay can influence reality and immersion senses deeply. It proposes the qualitative analysis of composition of the time delay and the quantitative method of determining its value in an experiment system. Finally, it presents a kind of time delay compensation method based on DR algorithm.