机构

• 长春光学精密机械与物... [2]
• 国家空间科学中心 [1]

采集方式

• OAI收割 [3]

内容类型

• 会议论文 [3]

发表日期

• 2016 [1]
• 2011 [2]

学科主题

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Neural network simulation of the atmospheric point spread function for the adjacency effect research 会议论文  OAI收割 Conference on Optics in Atmospheric Propagation and Adaptive Systems XIX, Edinburgh, SCOTLAND, SEP 28-29, 2016 作者:  Ma, Xiaoshan;  Wang, Haidong;  Li, Ligang;  Yang, Zhen;  Meng, Xin 收藏  |  浏览/下载：40/0  |  提交时间：2017/04/07 adjacency effect  atmospheric point spread function  Monte Carlo simulation  neural network   Astronomical image restoration through atmosphere turbulence by lucky imaging (EI CONFERENCE) 会议论文  OAI收割 3rd International Conference on Digital Image Processing, ICDIP 2011, April 15, 2011 - April 17, 2011, Chengdu, China 作者:  Zhao J.;  Wang J.;  Zhang S. 收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25 In this paper  we develop a lucky imaging system to restore astronomical images through atmosphere turbulence. Our system takes very short exposures  on the order of the atmospheric coherence time. The rapidly changing turbulence leads to a very variable point spread function (PSF)  and the variability of the PSF leads to some frames having better quality than the rest. Only the best frames are selected  aligned and co-added to give a final image with much improved angular resolution. Our system mainly consists of five parts: preprocessing  frame selection  image registration  image reconstruction  and image enhancement. Our lucky imaging system has been successfully applied to restore the astronomical images taken by a 1.23m telescope. We have got clear images of moon surface and Jupiter  and our system can be demonstrated to greatly improve the imaging resolution through atmospheric turbulence. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).   Research on image restoration of Roll-Swing imaging seeker (EI CONFERENCE) 会议论文  OAI收割 3rd IEEE International Conference on Advanced Computer Control, ICACC 2011, January 18, 2011 - January 20, 2011, Harbin, China 作者:  Zhang H.;  Zhang H. 收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25 To achieve a correct image receiving for Roll-Swing imaging seeker  the mechanism and imaging process is analyzed. The causes of image rotation are discussed. The influence of the frame encoders' precision on imaging de-rotation quality is analyzed. The Roll-Swing imaging seeker is designed for high-speed aerocraft  thus the received images are greatly degraded due to atmospheric turbulence. A new method of image restoration is proposed for turbulence-degraded images in this paper. The method is to get point spread function (PSF) based on the estimation of optical transfer function (OTF) according to the optical system design simulation. Finally  to obtain the restored image  constrained least squares filtering is used with the known PSF. The experiment results indicate that the new restoration method has a favorable effect to satisfy requirement of the automatic target recognition. 2011 IEEE.