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Zooming image based false matches elimination algorithms for robot navigation 期刊论文  OAI收割
ADVANCES IN MECHANICAL ENGINEERING, 2017, 卷号: 9, 期号: 12, 页码: 15
作者:  
Gao, Hongwei;  Jiang, Yueqiu;  Liu, Jinguo;  Yu, Yang;  Ju, Zhaojie
  |  收藏  |  浏览/下载:46/0  |  提交时间:2021/02/02
Zooming image based false matches elimination algorithms for robot navigation 期刊论文  OAI收割
ADVANCES IN MECHANICAL ENGINEERING, 2017, 卷号: 9, 期号: 12
作者:  
Gao HW(高宏伟);  Jiang YQ(姜月秋);  Liu JG(刘金国)
  |  收藏  |  浏览/下载:17/0  |  提交时间:2018/01/06
An improved method for object instance detection based on object center estimation and convex quadrilateral verification 会议论文  OAI收割
2016 IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2016, Chongqing, China, May 20-22, 2016
作者:  
Zhang Q(张强);  Qu DK(曲道奎);  Xu F(徐方);  Jia K(贾凯);  Jiang, Nan
收藏  |  浏览/下载:32/0  |  提交时间:2016/11/01
Calibration of optical center displacement for Zooming image 会议论文  OAI收割
2015 IEEE International Conference on Cyber Technology in Automation, Control, and Intelligent Systems (CYBER), Shenyang, China, June 8-12, 2015
作者:  
Gao HW(高宏伟);  Wei, Qiuyang;  Yu Y(于洋);  Liu JG(刘金国)
收藏  |  浏览/下载:22/0  |  提交时间:2015/12/24
Design of dual-FOV refractive/diffractive LWIR optical system (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
作者:  
Wang L.-J.;  Zhang J.-P.;  Wang L.-J.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:32/0  |  提交时间:2013/03/25
An infrared-optical zoom system using binary element is proposed in this paper. The two main advantages of the zoom system introducing here are: bigger F-number and lower cost. The primary optical properties are: F/#=1  Second  Others  zoom ratio =1:4  binary element is used to correct the chromatical aberration by taking the advantage of negative dispersion characteristics and the cost of the system is lower than that of conventional ones with Zinc Selenide (Znse) material at the same level. In the binary element is rotational symmetric with one step which is easy to fabricate  in order to balance 5th spherical aberration  and dual field are 26.6 and 5.6respectively. Wider field of view is used for search and the smaller one is used for imaging details. This system uses un-cooled infrared detector with 320240 pixels and 45m pixel size. The F-number matches the sensitivity range of the detector array. Three aspects are considered during design process to make the system more satisfactory and more achievable. First  5th coma aberration and 5th astigmatic aberration  the manner of zoom is accomplished by exchanging tow lenses into the smaller field of view system layout. The lens exchange manner faces the requirement of simple system structure and good image quality in both focal points. It can also make the system more feasible in the alignment process than mechanical-zooming manner and optical-zooming manner  high-order asphere surfaces with 2th order to 10 th order are also hired in the system. Asphere surface is useful in compressing the system and improving optical system transmittance. This kind asphere surface is on industrial level featuring low cost and easy to fabricate. It is shown that good image quality can achieved by implementing five Germanium lenses and the transmittance of system is 72%. All aberrations are diffraction-limited  both spherical aberration and astigmatic aberration are corrected. When the field of view(FOV) is 26.6 and the focal length is 152mm  MTF at Nyquist frequency(11lp/mm) is great than 0.7. The spherical aberration is -0.0073. The coma aberration is 0.0978 and the astigmatic aberration is -0.013. When the field of view(FOV) is 5.6 and the focal length is 38mm  MTF at Nyquist frequency is great than 0.8 with spherical aberration -0.0046  the coma aberration 0.055 and astigmatic aberration 0.034.  
Narcissus analysis for cooled staring IR system (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
作者:  
Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
Narcissus can have a deleterious effect on image quality for cooled infrared imaging systems. Therefore  analysis of narcissus is important for designing both scanning and staring optics. Narcissus is generally assumed to be negligible in staring IR optical designs because the shading effects can be removed by calibration of the detector array data. However  the calibration usually decreases sensitiveness of the system and Narcissus variation may be noticeable for sensors when the conditions changes as follows: 1. warming and cooling the optical housing  2. zooming optical elements  3. movement of lenses for focus. In that case  it will result in shading and other image defects even after calibration. To minimize these effects  narcissus should be assessed and controlled during the design of staring array IR system. We provided a direct and fast method for analyzing the narcissus variation in the presence of software such as LightTools  TracePro and ASAP  and proposed the principles in optical design of staring IR systems to reduce narcissus. A cooled staring IR system with serious narcissus was estimated and reoptimized. Narcissus analysis of this IR system confirmed the efficiency of the analysis method.  
New super-resolution algorithm for a single image based on local structure similarity 期刊论文  OAI收割
Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao/Journal of Computer-Aided Design and Computer Graphics, 2005, 卷号: 17, 期号: (5), 页码: 941-947
作者:  
Han, Hua;  Wang, Hongjian;  Peng, Silong,
  |  收藏  |  浏览/下载:17/0  |  提交时间:2017/01/13
一种新的单幅图像超分辨率方法 期刊论文  OAI收割
中科院自动化研究所自动化与信息技术发展战略研讨会暨2003年学, 2003, 期号: 2003, 页码: 631-643
作者:  
韩华;  赵书斌;  彭思龙,
  |  收藏  |  浏览/下载:17/0  |  提交时间:2017/01/13