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Remote Sensing Image Restoration with Modulation Transfer Function Compensation Technology In-orbit 会议论文  OAI收割
Conference Location, 2013
Mu X.; Xu S. Y.; Li G. X.; Hu J.
收藏  |  浏览/下载：11/0  |  提交时间：2014/05/22
The state of the art for Liquid crystal adaptive optics in astronomical applications 会议论文  OAI收割
2012
作者:  Xuan L.
收藏  |  浏览/下载：23/0  |  提交时间：2013/03/28
Automatic spin coater for concave spherical substrate - art. no. 67240U 会议论文  OAI收割
2007
Liang F. C.; Gao J. S.; Feng X. G.; Zhao J. L.; Xu Z. J.; Hu J.; Xu F. L.; Wang H. Q.; Liu X. H.
收藏  |  浏览/下载：5/0  |  提交时间：2013/03/28
Research on the affect of differential-images technique to the resolution of infrared spatial camera (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, July 8, 2007 - July 12, 2007, Chengdu, China
Jin G.; An Y.; Qi Y.; Hu F.
收藏  |  浏览/下载：12/0  |  提交时间：2013/03/25
The optical system of infrared spatial camera adopts bigger relative aperture and bigger pixel size on focal plane element. These make the system have bulky volume and low resolution. The potential of the optical systems can not be exerted adequately. So  one method for improving resolution of infrared spatial camera based on multi-frame difference-images is introduced in the dissertation. The method uses more than one detectors to acquire several difference images  and then reconstructs a new high-resolution image from these images through the relationship of pixel grey value. The technique of difference-images that uses more than two detectors is researched  and it can improve the resolution 2.5 times in theory. The relationship of pixel grey value between low-resolution difference-images and high-resolution image is found by analyzing the energy of CCD sampling  a general relationship between the enhanced times of the resolution of the detected figure with differential method and the least count of CCD that will be used to detect figure is given. Based on the research of theory  the implementation process of utilizing difference-images technique to improve the resolution of the figure was simulated used Matlab software by taking a personality image as the object  and the software can output the result as an image. The result gotten from the works we have finished proves that the technique is available in high-resolution image reconstruction. The resolution of infrared spatial camera can be improved evidently when holding the size of optical structure or using big size detector by applying for difference image technique. So the technique has a high value in optical remote fields.  
Simulation and experimental study of high power fiber lasers 会议论文  OAI收割
2004
作者:  Zhang J.;  Liu Y.;  Liu Y.;  Liu Y.;  Zhao L.
收藏  |  浏览/下载：5/0  |  提交时间：2013/03/28