摘要
A distortion correction method for the elemental images of integral imaging(Ⅱ) by utilizing the directional diffuser is demonstrated. In the traditional Ⅱ, the distortion originating from lens aberration wraps elemental images and degrades the image quality severely. According to the theoretical analysis and experiments, it can be proved that the farther the three-dimensional image is displayed from the lens array, the more serious the distortion is. To analyze the process of eliminating lens distortion, one lens and its corresponding elemental image are separated from the traditional Ⅱ. By introducing the directional diffuser, the aperture stop of the separated optical system changes from the eye's pupil to the lens. In terms of contrast experiments, the distortion of the improved display system is corrected effectively. In the experiment, when the distance between the reconstructed image and lens array is equal to 120 mm, the largest lens distortion is decreased from 46.6% to 3.3%.
A distortion correction method for the elemental images of integral imaging(Ⅱ) by utilizing the directional diffuser is demonstrated. In the traditional Ⅱ, the distortion originating from lens aberration wraps elemental images and degrades the image quality severely. According to the theoretical analysis and experiments, it can be proved that the farther the three-dimensional image is displayed from the lens array, the more serious the distortion is. To analyze the process of eliminating lens distortion, one lens and its corresponding elemental image are separated from the traditional Ⅱ. By introducing the directional diffuser, the aperture stop of the separated optical system changes from the eye's pupil to the lens. In terms of contrast experiments, the distortion of the improved display system is corrected effectively. In the experiment, when the distance between the reconstructed image and lens array is equal to 120 mm, the largest lens distortion is decreased from 46.6% to 3.3%.
作者
于迅博
桑新柱
高鑫
杨神武
刘博阳
陈铎
颜玢玢
余重秀
Xunbo Yu;Xinzhu Sang;Xin Gao;Shenwu Yang;Boyang Liu;Duo Chen;Binbin Yan;Chongxiu Yu(State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China)
基金
supported by the Natural National Science Foundation of China(NSFC)(No.61705014)
the Fundamental Research Funds for the Central Universities(No.2016ZX01)
the fund of the State Key Laboratory of Information Photonics and Optical Communications
The "863" Program(No.2015AA015902)