中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共5条,第1-5条 帮助

条数/页: 排序方式:
Simultaneous quantification of longitudinal and transverse ocular chromatic aberrations with Hartmann-Shack wavefront sensor 期刊论文  OAI收割
JOURNAL OF INNOVATIVE OPTICAL HEALTH SCIENCES, 2018, 卷号: 11, 期号: 4, 页码: 1850021
作者:  
Deng, Yangchun;  Zhao, Junlei;  Dai, Yun;  Zhang, Yudong
  |  收藏  |  浏览/下载:36/0  |  提交时间:2019/08/23
The effect analysis of conic coefficient error based on data measured from Talysurf and simulation of Zernike coefficients 会议论文  OAI收割
8th international symposium on advanced optical manufacturing and testing technology (aomatt) - optical test, measurement technology, and equipment, suzhou, peoples r china, 2016-04-26
作者:  
Jiang, Kai
收藏  |  浏览/下载:24/0  |  提交时间:2016/12/02
Based on Householder transform of the Zernike polynomial wave front fitting method to solve active optics correction force (EI CONFERENCE) 会议论文  OAI收割
Infrared Materials, Devices, and Applications, November 12, 2007 - November 15, 2007, Beijing, China
作者:  
Wu X.-X.
收藏  |  浏览/下载:36/0  |  提交时间:2013/03/25
Corrective force solving is a critical technology of the active optics. A method to solve active optics corrective force is introduced  which is based on Householder transform of Zernike polynomial wave front fitting  this method is different from the traditional least square method and Gram-Schmid orthogonal method  because it does not bring ill-conditioned polynomial without constructing normal equation  so it can avoid calculation error  wave front fitting is precision. Based on the coefficient of the Zernike polynomial and the response function of the each actuator  the stiffness matrix of the primary mirror is built  and then adopting the damp least square method to calculate corrective force. Based on this method  cp400m test mirror is simulated many times  the calculation result approve: if the Householder transform is adopted  wave front fitting is precision  the result is stabilization and corrective effectiveness is better.  
二次光栅在波前测量中的应用 期刊论文  OAI收割
光学学报, 2007, 卷号: 27, 期号: 1, 页码: 1, 4
周素梅; 周常河
收藏  |  浏览/下载:1575/155  |  提交时间:2009/09/18
A novel starting-point-independent wavelet coefficient shape matching (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
Hu S.; Zhu M.; Wu C.; Song H.-J.
收藏  |  浏览/下载:32/0  |  提交时间:2013/03/25
In many computer vision tasks  in order to improve the accuracy and robustness to the noise  wavelet analysis is preferred for the natural multi-resolution property. However  the wavelet representation suffers from the dependency of the starting point of the sampled contour. For overcoming the problem that the wavelet representation depends on the starting point of the sampled contour  the Zernike moments are introduced  and a novel Starting-Point-lndependent wavelet coefficient shape matching algorithm is presented. The proposed matching algorithm firstly gains the object contours  and give the translation and scale invariant object shape representation. The object shape representation is converted to the dyadic wavelet representation by the wavelet transform. And then calculate the Zernike moments of wavelet representation in different scales. With respect to property of rotation invariant of Zernike moments  consider the Zernike moments as the feature vector to calculate the dissimilarity between the object and template image  which overcoming the problem of dependency of starting point. The experimental results have proved the proposed algorithm to be efficient  precise  and robust.