机构

• 长春光学精密机械与物... [2]
• 力学研究所 [1]

采集方式

• OAI收割 [3]

内容类型

• 会议论文 [3]

发表日期

• 2011 [1]
• 2005 [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 Information extraction from laser speckle patterns using wavelet entropy techniques (EI CONFERENCE) 会议论文  OAI收割 MIPPR 2011: Multispectral Image Acquisition, Processing, and Analysis, November 4, 2011 - November 6, 2011, Guilin, China 作者:  Li X.-Z.;  Wang X.-J. 收藏  |  浏览/下载：38/0  |  提交时间：2013/03/25 A novel speckle patterns processing method is presented using multi-scale wavelet techniques. Laser speckle patterns generated from the sample contained abundant information. In this paper  we propose a method using wavelet entropy techniques to analyze the speckle patterns and exact the information on the sample surface. In our case  we used this approach to test the solar silicon cell surface profiles based on the sym8 orthogonal wavelet family. According different wavelet entropy values  the micro-structure of different solar silicon cell surfaces were comparative analyzed. Furthermore  we studied the AFM and reflective spectra of the wafer. Results show that the wavelet entropy speckle processing method is effective and accurate. And the experiment proved that this method is a useful tool to investigate the surface profile quality. 2011 SPIE.   Color video display technique based on diode-pumped solid state lasers (EI CONFERENCE) 会议论文  OAI收割 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Liu H.;  Wei Z.-L.;  Liu H.;  Liu H.;  Kang Y.-S. 收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25 This paper will introduce the principle and techniques to realize laser color video display. The characteristics of techniques and bottleneck of restricting the development are analyzed. A novel technical approach to eliminating the laser interference  improving the uniformity of optical field  transforming the chromaticity and extending the virtual color is proposed. The principle device of laser display system has been produced on the basis of the blue  green and red diode-pumped solid state lasers. The wavelengths of the blue  green and red are respectively 473nm  532nm and 671 nm. The output powers of the lasers are 1.3W  0.32W and 3.5W respectively.   Progressive ocean wave modelling in drum centrifuge 会议论文  OAI收割 1st International Symposium on Frontiers in Offshore Geotechnics, ISFOG 2005, Perth, WA, Australia, September 19, 2005 - September 21, 2005 作者:  Gao FP(高福平);  Randolph MF 收藏  |  浏览/下载：23/0  |  提交时间：2017/06/01 Interaction problems  Novel techniques  Offshore engineering  Plastic mesh  Porous metal  Progressive waves  Similarity analysis  Water channels  Water depth  Wave absorbers  Wave absorption  Wave generation  Wave heights  Wave simulations