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长春光学精密机械与物... [6]
计算技术研究所 [3]
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OAI收割 [9]
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会议论文 [5]
期刊论文 [4]
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Design of a high frame rate driver circuit for a 22 M-pixel high-resolution large-area array CCD camera and its nonuniformity correction
期刊论文
OAI收割
Optical Engineering, 2019, 卷号: 58, 期号: 8, 页码: 14
作者:
H.Ren
;
T.T.Hu
;
Y.L.Song
;
M.H.Gao
  |  
收藏
  |  
浏览/下载:51/0
  |  
提交时间:2020/08/24
full-frame array CCDFTF4052M,high-frequency frame,driver circuit,nonuniformity correction,two-point correction algorithm,Optics
A Novel Data Reuse Method to Reduce Demand on Memory Bandwidth and Power Consumption For True Motion Estimation
期刊论文
OAI收割
IEEE ACCESS, 2018, 卷号: 6, 页码: 10151-10159
作者:
Xu, Weizhi
;
Yu, Hui
;
Lu, Dianjie
;
Liu, Fangai
;
Liu, Zhiyong
  |  
收藏
  |  
浏览/下载:40/0
  |  
提交时间:2019/12/10
Motion estimation
full search
inter-frame
data reuse
frame rate up-conversion
Stroboscope Based Synchronization of Full Frame CCD Sensors
期刊论文
OAI收割
SENSORS, 2017, 卷号: 17, 期号: 4, 页码: 16
作者:
Shen, Liang
;
Feng, Xiaobing
;
Zhang, Yuan
;
Shi, Min
;
Zhu, Dengming
  |  
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2019/12/12
charge-coupled device (CCD)
smear
stroboscope
video capture
synchronization
full frame
hidden Markov model (HMM)
High-Performance Motion Estimation for Image Sensors with Video Compression
期刊论文
OAI收割
SENSORS, 2015, 卷号: 15, 期号: 8, 页码: 20752-20778
作者:
Xu, Weizhi
;
Yin, Shouyi
;
Liu, Leibo
;
Liu, Zhiyong
;
Wei, Shaojun
  |  
收藏
  |  
浏览/下载:121/0
  |  
提交时间:2019/12/13
memory bandwidth
image sensors
video compression
motion estimation
full search
inter-frame
data reuse
Improved TOPS about direction of arrival estimation for wideband signals (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM2011, October 21, 2011 - October 23, 2011, Shanghai, China
作者:
He B.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
The study about the direction-of-arrival (DOA) estimation for wideband signals is a basic topic of Signal Processing. The method called test of orthogonality of projected subspaces (TOPS) does not require initial values to form focusing matrix compared with the coherent signal subspace method (CSSM)
but it has poor performance for coherent wideband signals at low signal-to-noise ratio (SNR). Based on the lack of the conventional TOPS
this paper reconstructs a set of new matrices with the narrowband correlated matrices coming from the DFT decomposition of the array output and modifies the method frame of the conventional TOPS. So we get a set of reconstructed matrices with full rank corresponding to each frequency bin
and which have no array aperture loss. The improved TOPS can estimate the DOA for coherent wideband sources at low SNR
and enhances the performance of the conventional TOPS. Simulation results show that the improved TOPS is effective
and the total performance of which is similar to the rotational signal-subspace (RSS) method. (2012) Trans Tech Publications.
Imaging control of airborne area CCD mapping camera (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
作者:
Chen X.
;
Chen X.
;
Chen X.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
Digital mapping camera is an important tool for modern airborne photogrammetry. Monochromic area CCD which is full frame transfer is selected as image sensor in this paper. Electronic shutter is utilized to eliminate the opening delay of mechanical shutter which will affect the precision of exterior orientation elements acquisition. The equation for calculation displacement of principal point is proposed for TDI forward image motion compensation to compensate principal point shift. Imaging pose control system is designed in order to meet the need for airborne stereo mapping. 2011 IEEE.
Design of driving circuit for binocular CCD image system (EI CONFERENCE)
会议论文
OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
作者:
Zhang X.
;
Zhang X.
;
Zhang X.
收藏
  |  
浏览/下载:45/0
  |  
提交时间:2013/03/25
The paper designs a driving circuit of high sensitive
wide dynamic and high signal-to-noise ratio for binocular CCD imaging system which adopts a Dalsa-made high resolution full-frame 33-mega pixels area CCD FTF5066M. Inner structure and driving timing of the FTF5066M sensor are presented. Field Programmable Gate Array (FPGA) is used as the main device to accomplish the timing design of the circuits and power driver control of the two sensors. By using the Correlated Double Sampling (CDS) technique
the video noise is reduced and the SNR of the system is increased. A 12- bit A/D converter is used to improve the image quality. The output rate of the imaging system designed with integrated chip can reach to 1.3 frames per second through bi-channel. For its good performance
low power consumption and small volume
the driving system can be applied to aeronautics and astronautics field. With a further improvement
a maximum data output rate of 2.7 frames per second can be reached through all the eight channels of the two CCDs. 2010 Copyright SPIE - The International Society for Optical Engineering.
Optical system of golay-3 synthetic aperture telescope of Fizeau style (EI CONFERENCE)
会议论文
OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
作者:
Sun Z.-Y.
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2013/03/25
In order to get high resolution
the field of view is 4. Analyzed the imaging
a optical system of golay-3 synthetic aperture telescope has been designed which adopt Fizeau multi-telescope frame. The angular magnification of sub-aperture is -4
the fill factor is 113. The configuration of light beam combiner is Cassegrain style added a lens. The total focal length is 6000mm
the PSF have been improved remarkably
and the cut-off frequency of MTF is close to that of full aperture. 2010 IEEE.
Driving and image enhancement for CCD sensing image system (EI CONFERENCE)
会议论文
OAI收割
2010 3rd IEEE International Conference on Computer Science and Information Technology, ICCSIT 2010, July 9, 2010 - July 11, 2010, Chengdu, China
Zhang M.
;
Ren J.
收藏
  |  
浏览/下载:36/0
  |  
提交时间:2013/03/25
The paper designs a driving circuit of high sensitive
wide dynamic for CCD sensing imaging system which adopts a Dalsa-made high resolution full-frame 33-mega pixels area CCD FTF5066M. Field Programmable Gate Array (FPGA) is used as the main device to accomplish the timing design of the circuits and power driver control of the sensor. By using the Correlated Double Sampling (CDS) technique
the video noise is reduced and the SNR of the system is increased. The output rate of the imaging system designed with integrated chip can reach to 1.3 frames per second through bi-channel output. We use the histogram specification to adjust the brightness of the captured image. And then use the median filtering to suppress the noise. The traditional gray mean gradient (GMG) and the objective evaluation method based on Human Visual System (HVS) used to verify the effect of image enhancement. 2010 IEEE.