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 ele...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%.展开更多
Based on the modern monetary theory, this paper analyze the relation between interest rate policy and Shanghai and Shenzhen Stock Exchange by using event study and co\|integration model method. We point out that the i...Based on the modern monetary theory, this paper analyze the relation between interest rate policy and Shanghai and Shenzhen Stock Exchange by using event study and co\|integration model method. We point out that the interest rate policy have some abnormal effects on the stock market in short time and have negative effects on the stock market in long run. The influence of the interest rate is different on Shanghai Stock Exchange and Shenzhen Stock Exchange.展开更多
基金supported by the Natural National Science Foundation of China(NSFC)(No.61705014)the Fundamental Research Funds for the Central Universities(No.2016ZX01)+1 种基金the fund of the State Key Laboratory of Information Photonics and Optical CommunicationsThe "863" Program(No.2015AA015902)
文摘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%.
文摘Based on the modern monetary theory, this paper analyze the relation between interest rate policy and Shanghai and Shenzhen Stock Exchange by using event study and co\|integration model method. We point out that the interest rate policy have some abnormal effects on the stock market in short time and have negative effects on the stock market in long run. The influence of the interest rate is different on Shanghai Stock Exchange and Shenzhen Stock Exchange.
