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Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
长春光学精密机械与物... [2]
武汉岩土力学研究所 [1]
合肥物质科学研究院 [1]
西安光学精密机械研究... [1]
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OAI收割 [5]
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会议论文 [3]
期刊论文 [2]
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2021 [1]
2020 [1]
2011 [1]
2009 [1]
2006 [1]
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Modelling the stability of a soil-rock-mixture slope based on the digital image technology and strength reduction numerical manifold method
期刊论文
OAI收割
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS, 2021, 卷号: 126, 页码: 45-54
作者:
Yang, Yongtao
;
Chen, Tao
;
Wu, Wenan
;
Zheng, Hong
  |  
收藏
  |  
浏览/下载:51/0
  |  
提交时间:2021/05/25
Soil-rock mixtures
Strength reduction technique
Numerical manifold method
Digital image processing technology
Slope stability analysis
RAPID DETECTION OF VITAMIN C CONTENT IN FRUITS AND VEGETABLES USING A DIGITAL CAMERA AND COLOR REACTION
期刊论文
OAI收割
QUIMICA NOVA, 2020, 卷号: 43
作者:
Zhao, Wen-zhu
;
Cao, Ping-ping
;
Zhu, Yuan-yang
;
Liu, Sheng
;
Gao, Hong-Wen
  |  
收藏
  |  
浏览/下载:77/0
  |  
提交时间:2021/04/26
measurement technique
vitamin C content
digital camera
image processing
multivariate fitting
Image enhancement techniques used for THz imaging
会议论文
OAI收割
international symposium on photoelectronic detection and imaging 2011: terahertz wave technologies and applications, beijing, china, may 24, 2011 - may 26, 2011
作者:
FanWenhui
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2012/07/09
THz
THz imaging
Digital image processing technique
Micro-motion exposure method based on PZT piezoelectric ceramics (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, June 17, 2009 - June 19, 2009, Beijing, China
作者:
Meng Z.
;
Meng Z.
收藏
  |  
浏览/下载:102/0
  |  
提交时间:2013/03/25
There mainly is laser digital photofinishing technique and digital photofinishing technique based on LCD consisting of TFT and LCOS in the digital photofinishing field at the present time. The former have a good many merit such as wide color gamut
high processing rate
large output size and high brightness
but his cost is very high
his maintain technique being comparatively complex
that result in difficult use for people. The utilization ratio of the latter is low because of lower resolution and lower aperture ratio for LCD
but the digital photofinishing based on LCD have lower cost and higher utilization ration
being suitable for people's current standard of living. Considering above mentioned problem
a micro-motion exposure method based on PZT piezoelectric ceramics used in digital image photofinishing is presented. The two-dimension micro-motion exposure system consisting of PZT piezoelectric ceramics
LCD panel
polarizing film and spring strip is designed. By means of PZT piezoelectric ceramics the LCD panel is removed about the one half of the pixel size of the LCD panel for four times from the original place
at the same time imaging system is exposed four times at the printing paper. The software is used to control the time synchronization
the exposure time and motion range of the LCD panel. The system has advantages such as shorter response time than 0.1seconds
lesser motion error than 0.01 microns
high stability and repeatability. Experimental results show that the proposed micro-motion exposure method improve the picture brightness and enlarge output size
at the meantime reducing the cost of the system. 2009 SPIE.
Design of video auto focusing based on image processing (EI CONFERENCE)
会议论文
OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
Meng B.
;
Zhu M.
;
Cai C.-J.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
In order to realize the auto focusing technique based on digital image processing
a video image processing system is designed by using high-performance digital signal processor TMS320VC5509 as the core
field programmable gate array FPGA for preprocessing of image. At the same time
it is proposed to use vector norm sum of image gray gradient as evaluation functions of digital image. It has the characteristics of good unbiasedness
powerful unimodality
etc.
and can be applied to evaluation of defocusing. The hardware composition of the theory behind the auto focusing system
and the application of the evaluation function are discussed in details.