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	Study on the packing characteristics of a special "J" shape ceramic packed pebble bed based on discrete element modeling 期刊论文 OAI收割 POWDER TECHNOLOGY, 2021, 卷号: 379 作者: Wang, J.; Lei, M. Z.; Yang, H.; Xu, S. L.; Xu, Kun \| 收藏 \| 浏览/下载：29/0 \| 提交时间：2021/03/15 Packing characteristic Discrete element method Packed pebble bed Special shape Packing factor Ceramic pebble
	Study on the packing characteristics of a special "J" shape ceramic packed pebble bed based on discrete element modeling 期刊论文 OAI收割 POWDER TECHNOLOGY, 2021, 卷号: 379 作者: Wang, J.; Lei, M. Z.; Yang, H.; Xu, S. L.; Xu, Kun \| 收藏 \| 浏览/下载：26/0 \| 提交时间：2021/03/15 Packing characteristic Discrete element method Packed pebble bed Special shape Packing factor Ceramic pebble
	Research on the method of updating instrument line shape function of on-orbit fourier ultrahigh resolution spectrometer 期刊论文 OAI收割 JOURNAL OF INFRARED AND MILLIMETER WAVES, 2018, 卷号: 37, 期号: 5, 页码: 613-620 作者: Wang Jun-Feng; Ye Han-Han; Yi Wei-Ning; Chen Zhen-Ting; Fang Xue-Jing \| 收藏 \| 浏览/下载：101/0 \| 提交时间：2019/12/25 instrument line shape function calibration spectrum fourier spectrometer solar spectrum model characteristic peak on-orbit
	adaptive scale smoothing for road redundancy region elimination 期刊论文 OAI收割 OPTICAL ENGINEERING, 2012, 卷号: 51, 期号: 6, 页码: - Huang Zhijian; Zhang Jinfang; Wu Jiaze; Xu Fanjiang \| 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/09/17 road extraction skeleton analysis shape characteristic spectrum characteristic adaptive scale smoothing remote sensing image
	Adaptive Wiener filtering with Gaussian fitted point spread function in image restoration (EI CONFERENCE) 会议论文 OAI收割 2011 IEEE 2nd International Conference on Software Engineering and Service Science, ICSESS 2011, July 15, 2011 - July 17, 2011, Beijing, China 作者: Yang L.; Zhang X.; Zhang X.; Zhang X.; Yang L. 收藏 \| 浏览/下载：44/0 \| 提交时间：2013/03/25 In the imaging process of the space remote sensing camera there was degradation phenomenon in the acquired images. In order to reduce the image blur caused by the degradation the remote sensing images were restored to give prominence to the characteristic objects in the images. First the frequency-domain notch filter was adopted to remove strip noises in the images. Then using the ground characters with the knife-edge shape in the images the point spread function of the imaging system was estimated. In order to improve the accuracy the estimated point spread function was corrected with Gaussian fitting method. Finally the images were restored using the adaptive Wiener filtering with the fitted point spread function. Experimental results of the real remote sensing images showed that almost all strip noises in the images were eliminated. After the denoised images were restored its variance and its gray mean gradient increased also its laplacian gradient increased. Restoration with Gaussian fitted point spread function is beneficial to interpreting and analyzing the remote sensing images. After restoration the blur phenomenon of the images is reduced. The characters are highlighted and the visual effect of the images is clearer. 2011 IEEE.
	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.
	a new method of line feature generalization based on shape characteristic analysis 期刊论文 OAI收割 METROLOGY AND MEASUREMENT SYSTEMS, 2011, 卷号: 18, 期号: 4, 页码: 597-605 Nie Hongshan; Huang Zhijian \| 收藏 \| 浏览/下载：17/0 \| 提交时间：2013/10/08 Line generalization key point detection shape characteristic analysis
	A load simulation method of piezoelectric actuator in FEM for smart structures 期刊论文 OAI收割 Science in China Series E-Technological Sciences, 2009, 卷号: 52, 期号: 9, 页码: 2576-2584 作者: Li M(李敏); Chen WM(陈伟民); Wang MC; Jia LJ; Chen WM 收藏 \| 浏览/下载：1210/140 \| 提交时间：2009/08/03 Piezoelectric Actuator Piezoelectric Fiber Composite Shape Control Vibration Control Drive Characteristic