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Robust HDR reconstruction using 3D patch based on two-scale decomposition 期刊论文  OAI收割
Signal Processing, 2024, 卷号: 219
作者:  
Qiao, Zhangchi;  Yi, Hongwei;  Wen, Desheng;  Han, Yong
  |  收藏  |  浏览/下载:26/0  |  提交时间:2024/03/07
Guided filter-based fusion method for multiexposure images 期刊论文  OAI收割
Optical Engineering, 2016, 卷号: 55, 期号: 11, 页码: 1-12
作者:  
收藏  |  浏览/下载:42/0  |  提交时间:2016/11/27
Nanoscale patterns made by using a 13.5-nm Schwarzschild objective and a laser produced plasma source (EI CONFERENCE) 会议论文  OAI收割
Optical Micro- and Nanometrology IV, April 16, 2012 - April 18, 2012, Brussels, Belgium
作者:  
Wang X.;  Wang X.;  Wang X.;  Wang Z.;  Wang Z.
收藏  |  浏览/下载:39/0  |  提交时间:2013/03/25
Lithium fluoride (LiF) crystal is a very promising candidate as nanometer resolution EUV and soft X-ray detector. Compared with other EUV and soft X-ray detectors  charge coupled device and photographic films  LiF crystal has high resolution  large field of view and wide dynamic range. In this paper  using LiF crystal as EUV detector and a Schwarzschild objective (SO) working at 13.5nm as projection optics  mesh images with 4.2 m  1.2 m and 800 nm line width and pinhole patterns with 1.5m diameter are acquired in projection imaging mode and direct writing mode  respectively. Fluorescence intensity profiles of images show that the resolution of mesh image is 900 nm  and the one of pinhole image is 800 nm. In the experiments  a spherical condense mirror based on normal incidence type is used to eliminate the damage and contamination on the masks (mesh and pinhole) caused by the laser plasma  and the energy density is not decreased compared with that the masks are close to the plasma. The development of the SO  the alignment of the objective and the imaging experiments are also reported. 2012 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
Study on dynamic imaging on TDI CCD optical remote sensor of push-broom technology (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Liu L.;  Ren J.-Y.;  Liu L.;  Gao M.-H.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
A set special detecting system is proposed based on TDICCD push-broom technology applying in dynamic imaging detecting experiment of space optics remote sensor. In the system  In the course of detecting  push-broom movement of the satellite is simulated through using double supporting U structure precision rotary platform with remote sensor by angular speed 0.555/s  regard Nyquist frequency target as detecting aim  within the range of 5 and control precision on steady speed achieves 0.3%  in order to solve matching uncertainty between the CCD pixel and the vertical target strip image when the remote sensor does push-broom  make matching simplify  enhance the measurement result the accuracy. So the tolerance a/n arithmetic progression gap target strip is joined in each group of rectangular vertical group target strip. The remote sensor obtains in vertical  the level and 45 the direction 0 fields of view  0.86 the field of view Nyquist frequency target strip image after detected  a group target strip which can precision matching to TDICCD pixel at least can be obtained through analysis and dealing with 0.86 field of view's target strip image. The experiment not only verifies the detecting system's feasibility but simultaneously verifies whether to have the high quality dynamic imaging quality when TDICCD push-broom technology is adopted on the remote sensor developed. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Development and radiance calibration of three-waveband camera (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photonics and Optoelectronics, SOPO 2010, June 19, 2010 - June 21, 2010, Chengdu, China
作者:  
Wang J.;  Liu Y.;  Liu Y.;  Sun Q.;  Liu Y.
收藏  |  浏览/下载:33/0  |  提交时间:2013/03/25
An imaging system with three-waveband sharing one lens and an area CCD was developed. By rotating different filters into the beam path  the required waveband was selected. The optical system which can image in ultraviolet  visible and near infrared region was designed and the signal collecting system was integrated. The optical design and system integration have some advantages such as low cost  small size and light in weight. To obtain a high imaging quality  the radiation calibration is carried out in order to establish the relation between the average grey level of output image and the input radiance from the integrating sphere. According to the calibration data in experiments  the radiation dynamic range and the best working point of the system are determined. The experiment result shows that the dynamic range of the image system is maximal when the exposure time is 8ms in ultraviolet  0.5ms in visible and 0.125ms in near infrared region. 2010 IEEE.  
Realistic Scene Rendition for High Dynamic Range Imaging 期刊论文  OAI收割
Chinese Journal of Electronics, 2010, 卷号: 19, 期号: 1, 页码: 75-80
作者:  
Jinhua Wang;  De Xu;  Bing Li
  |  收藏  |  浏览/下载:35/0  |  提交时间:2018/01/25
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