激光与光电子学进展, 2018, 55 (8): 081205, 网络出版: 2018-08-13  

基于光学传递函数的头戴显示器图像畸变检测 下载: 672次

Image Distortion Detection of Head-Mounted Display Based on Optical Transform Function
作者单位
华侨大学信息科学与工程学院福建省光传输与变换重点实验室, 福建 厦门 361021
摘要
头戴显示器光学系统由于焦距短、视场大而容易产生图像畸变。提出了一种头戴显示器的图像畸变测量方法,采用单位矩阵的傅里叶变换图像作为标准测试图形,应用傅里叶变换分析了头戴显示器光学传递函数与测量图像球面化畸变的关系,得到了形状不变的关系曲线。实验测量了5种头戴显示器的图像球面化畸变,得到的负球面化枕形畸变范围为-22%~-65%。结果表明:头戴显示器的球面化图像畸变量CVR与方格成像实验的畸变量D具有一定的线性关系,且球面化图像畸变量CVR的测量简单,能体现头戴显示器的整体图像畸变程度。该研究结果对头戴显示器的图像显示质量测量具有一定的参考价值。
Abstract
The optical system of the head-mounted display is prone to image distortion generally because its focal length is short and its field of view is wide. An image distortion measurement method of head-mounted display is presented. A Fourier transform image of unit matrix is chose as standard test pattern, and the relationship between optical transfer function of head-mounted display and spherical distortion of image is analyzed with Fourier transform. Based on this method, the similar relationship curve are obtained. Image spherical distortion of five kinds of head-mounted display are measureds, and the negative-pinched pincushion distortion is obtained which ranged from -22% to -65%. The results show that spherical distortion CVR of the head-mounted display has linear relation with distortion quality of grid image measurement. However, the measuring method for spherical image distortion is simple, and the measuring results can reflect the distortion of the whole image. The results are of great reference value for measuring image quality of head-mounted display.

王孝艳, 刘楚嘉, 漆宇, 庄其仁. 基于光学传递函数的头戴显示器图像畸变检测[J]. 激光与光电子学进展, 2018, 55(8): 081205. Wang Xiaoyan, Liu Chujia, Qi Yu, Zhuang Qiren. Image Distortion Detection of Head-Mounted Display Based on Optical Transform Function[J]. Laser & Optoelectronics Progress, 2018, 55(8): 081205.

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