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浏览/检索结果: 共9条,第1-9条 帮助

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Microgel evolution at three-phase contact region and associated wettability alteration 期刊论文  OAI收割
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2018, 卷号: 558, 页码: 297-302
作者:  
Gong, Yi;  Wang, Mao;  Zhang, Zhiliang;  He, Jianying
  |  收藏  |  浏览/下载:51/0  |  提交时间:2019/12/25
线条增强的建筑物图像抽象画生成 期刊论文  OAI收割
计算机辅助设计与图形学学报, 2013, 卷号: 25, 期号: 9, 页码: 1275-1280
柳有权; 吴宗胜; 韩红雷; 吴恩华
  |  收藏  |  浏览/下载:24/0  |  提交时间:2014/12/16
The Research of real time auto-recognition of the moire fringe (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Wang M.-J.; Wu Z.-G.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
Measuring the movement of raster by the method of moire fringe has the advantage of high sensitivity  high resolution and non-contacted measurement. The characteristic of moire fringe is that the image is white alternate with black  the angle of the stripes is uniform  the width of the stripes is uniform  the terminators of the stripes aren't clear. A fast method that can figure out the width and angle of the moire fringe precisely is put forward in this paper. It calculates the angle the stripes firstly. According to the principle of the minimum mean squared error (MMSE)  the closer a series of data is  the smaller the value of the MMSE will be. The method is described as follows: It takes the image's center as the origin  180 beelines pass through the origin with the same angle interval. it calculates the value of the minimum mean squared error of the 180 beelines and find out the least one among those  then the angle of the moire fringe comes out primarily. In order to improving the calculating precision of moire fringe  60 equal angles are divided in the neighborhood of the angle  then a precise angle of moire fringe is calculated according to the principle of the MMSE. After getting out the angle of the moire fringe  we begin to calculate the width of moire fringe. A line vertical with the moire fringe is drawn  and we can get the width of the moire fringe by the vertical line. In order to get over the influence of the noise  an effective area with the shape of diamond is selected in the image. The data of area is accumulated and projected according to the direction of moire fringe  and a sine curve come out. The width of moire fringe can be obtained by getting the position of the first wave crest  the position of the last wave crest and the number of wave crest. Experiments prove that the precision of the method put forward in this paper is enhanced in comparison with the traditional frequency method  the precision of width calculation achieves to 99.6% according to the evaluation indicators of width detection error. The computing speed is boosted largely compared with traditional method  and it can achieve with 15 ms  that satisfying the demand of real time. 2011 SPIE.  
Surfaced-Enhanced Raman Spectroscopic Study on Single Living Human Nasopharyngeal Carcinoma Cells Incubated with Colloidal Gold 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 卷号: 30
-
  |  收藏  |  浏览/下载:14/0  |  提交时间:2020/10/26
Contrast research on interpolation and subpixel imaging in CCD geometric superresolution reconstruction (EI CONFERENCE) 会议论文  OAI收割
1st Asia Pacific Conference on Postgraduate Research in Microelectronics and Electronics, PrimeAsia 2009, November 19, 2009 - November 21, 2009, Shanghai, China
作者:  
Xu Y.-S.;  Yang S.-W.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
In order to enhance the resolution of Charge Coupled Device (CCD) pixel with the pixel dimension and focal length of optical system unchanged  the problem of CCD geometric superresolution is educed. The problem is discussed in terms of software and hardware. In software  the bicubic interpolation is introduced  while in hardware  the subpixel imaging method is utilized. The subpixel imaging method integrates two uniform linear CCDs staggered by half dimension of pixel in one device. In operation  the line frequency is doubled. At last  the collected data is interweaved to synthesize a high resolution image. The two methods  bicubic interpolation and subpixel imaging  are simulated with Matlab7.0.1. The qualitative and quantitative analyses are given. The simulated results of lanczos and cubic spline interpolation methods are given simultaneously to show the performance of interpolation. The simulation result shows that the result images quality becomes better in both methods  but compared with bicubic interpolation method  the synthesized image PSNR gained from sub-pixel imaging is averagely enhanced by 2.1682dB  while the elapsed time is reduced to be about one forth. The subpixel imaging method could significantly mitigate the image blur introduced by undersample. 2009 IEEE.  
Narrow line-width resonant cavity enhanced photodetectors operating at 1.55 mu m 期刊论文  iSwitch采集
Optics communications, 2008, 卷号: 281, 期号: 6, 页码: 1582-1587
作者:  
Mao, R. W.;  Tsai, C. S.;  Yu, J. Z.;  Wang, Q. M.
收藏  |  浏览/下载:32/0  |  提交时间:2019/05/12
Study on resonance absorption raman scattering in i2 liquid-core optical fiber (EI CONFERENCE) 会议论文  OAI收割
Nonlinear Optics: Technologies and Applications, November 12, 2007 - November 13, 2007, Beijing, China
作者:  
Fang W.;  Yi W.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
The Raman scattering of I2 liquid-core optical fiber under the condition of resonance absorption in liquid-core optical fiber is studied in this paper. Iodine is dissolved in transparent benzene to make solution of I2 in benzene  and the absorption coefficients of the solution are measured at certain wavelengths. The absorption curve can be divided into non-resonance absorption region  pre-resonance absorption region  strict resonance absorption region  and post-resonance absorption region respectively. Resonance absorption Raman scattering experiments are conducted by a 532 nm frequency-doubled Nd:YVO4 laser  and the wavelength is in the strict resonance absorption region of solution of I2 in benzene. Compared with I2  the absorption of benzene can be neglected. Non-resonance Raman scattering of the solution is performed using a 632.8 nm He-Ne laser  and no spectrum lines of I2 are found. The study demonstrates that there is one spectrum line of I2 in the Raman scattering spectrum in the I 2 liquid-core optical fiber  but this line is not found in the spectrum of the non-resonance and resonance absorption Raman scattering of I2 solution in benzene using absorption cell. The experiments proved that I 2 Raman scattering  is greatly enhanced by using both resonance absorption and liquid-core optical fiber.  
Narrow line-width resonant cavity enhanced photodetectors operating at 1.55 mu m 期刊论文  OAI收割
optics communications, 2008, 卷号: 281, 期号: 6, 页码: 1582-1587
Mao, RW; Tsai, CS; Yu, JZ; Wang, QM
收藏  |  浏览/下载:47/1  |  提交时间:2010/03/08
NaCl/Ca/Al as an efficient cathode in organic light-emitting devices 期刊论文  OAI收割
applied surface science, 2006, 卷号: 252, 期号: 18, 页码: 6337-6341
Shi SW; Ma DG
收藏  |  浏览/下载:16/0  |  提交时间:2010/08/17