视觉诱导晕动症是虚拟现实技术应用中较为严重的问题，沉浸在虚拟现实环境中的使用者普遍会存在头晕、恶心等症状。立体影像采集失真导致人眼感知的虚拟空间畸变，可能是诱发和增强视觉诱导晕动症的重要因素之一。为了研究立体影像采集失真对视觉诱导晕动症的影响，基于立体影像采集理论构建了虚拟空间畸变模型，针对具有三种焦距参数的镜头获取不同等级的立体空间畸变影像。通过视觉感知实验，对不同空间畸变下的视觉诱导晕动症进行主观和客观的评价。结果表明，当立体影像采集的相机视场角与人眼视场角不匹配时，立体影像失真对视觉诱导晕动症有显著性影响，立体影像采集失真会导致更为强烈的视觉诱导晕动症状。首次用系统性实验的方法验证采集参数与感知参数不匹配导致的虚拟空间畸变增强了视觉诱导晕动症的结论，研究结果对提出切实可行的缓解方法有重要意义。

Visually induced motion sickness has become a serious problem for users of virtual reality technology. Users immersed in a virtual reality environment generally suffer from dizziness, vomiting, and other symptoms. The distortion in stereoscopic image acquisition leads to virtual space distortion in human perception, which may be an important factor inducing and enhancing visually induced motion sickness. To study the effect of the distortion of stereoscopic video acquisition on visually induced motion sickness, a virtual spatial distortion model is constructed based on the theory of stereoscopic video acquisition. In addition, different levels of stereoscopic spatially distorted videos are obtained from lenses with three focal length parameters. Visual perception experiments were conducted to objectively and subjectively evaluate visually induced motion sickness under different spatial aberrations. The results show that when the angle of view of the acquired stereoscopic video does not match the stereoscopic visual angle of human eyes, the distortion of the video significantly affects the visually induced motion sickness, and the distortion of the stereoscopic video acquisition results in a more intense visually induced motion sickness. This paper presents a novel and systematic method to experimentally verify that distortions in virtual space caused by the mismatch between acquisition and perception parameters enhance visually induced motion sickness. The findings of this study can help put forward practical mitigation methods.