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。
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.
作者
王孝艳
刘楚嘉
漆宇
庄其仁
Wang Xiaoyan;Liu Chujia;Qi Yu;Zhuang Qiren(Fujian Provinciat Key Laboratory of Light Propagation and Transformation,Cotlege of Information Science and Engineering,Huaqiao University,Xiamen,Fujian 361021,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第8期321-326,共6页
Laser & Optoelectronics Progress
基金
福建省科技计划(高校产学合作)重大项目(2016H6016)
华侨大学2016年校级实验教学改革与建设课题(66661613)
关键词
测量
头戴显示器
标准测试图形
图像畸变
光学传递函数
傅里叶变换
measurement
head-mounted display
standard test pattern
image distortion
optical transformfunction
Fourier transform
