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长春光学精密机械与... [36]
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内容类型:会议论文
专题:长春光学精密机械与物理研究所
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Field programmable gate array configuration monitoring technology for space-based systems
会议论文
2013 International Conference on Mechatronics and Automatic Control Systems, ICMS 2013, August 10, 2013 - August 11, 2013, Hangzhou, China
Jin L.
;
Li J.
;
Wu Y.
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浏览/下载:20/0
  |  
提交时间:2015/04/27
Realization of the FPGA based TDI Algorithm in Digital Domain for CMOS Cameras
会议论文
2012
Tao S. P.
;
Jin G.
;
Zhang X. Y.
;
Qu H. S.
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2013/03/28
An improved destripe noises method for TDI-CCD images
会议论文
何斌
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浏览/下载:8/0
  |  
提交时间:2012/05/12
The research on statistical properties of TDI-CCD imaging noise (EI CONFERENCE)
会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Gu Y.-Y.
;
Shen X.-H.
;
He G.-X.
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  |  
浏览/下载:17/0
  |  
提交时间:2013/03/25
TDI-CCD can improve the sensitivity of space camera without any degradation of spatial resolution which is widely used in aerospace imaging devices. The article describes the basic working principle and application characteristics of TDI-CCD devices
analyses the composition of TDI-CCD imaging noise
and propose a new method to analyze TDI-CCD imaging noise with statistical probability distribution. In order to estimate the distribution of gray values affect by noise we introduced the concept of skewness and kurtosis. We design an experiment using constant illumination light source
take image with TDI-CCD working at different stage such as stage 16
stage 32
stage 48
stage 64 and stage 96
analyse the characteristics of image noise with the method we proposed
experimental results show that the gray values approximately meet normal distribution in large sample cases. 2011 SPIE.
Imaging control of airborne area CCD mapping camera (EI CONFERENCE)
会议论文
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
Yang Y.
;
Li Q.
;
Chen X.
;
Gang Z.
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  |  
浏览/下载:14/0
  |  
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.
Geocentric distance's errors' correction of space cameras based on USGS DEM (EI CONFERENCE)
会议论文
2011 IEEE 3rd International Conference on Communication Software and Networks, ICCSN 2011, May 27, 2011 - May 29, 2011, Xi'an, China
Yan D.
;
Xu S.
;
Li W.
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浏览/下载:14/0
  |  
提交时间:2013/03/25
In order to correct the geocentric distance's error of TDI (Time Delay and Integration) CCD space camera in calculation of image motion compensation
the data source of the earth's height above sea level USGS DEM (United States Geological Survey Digital Elevation Model) has been introduced to make digital elevation map
the match error of the forward direction (the integral direction of TDI CCD) has been greatly decreased by correcting the geocentric distance error
and eliminate the influence to the relative error of image motion velocity
and correct the error generated by the different heights above sea level. After correcting
which greatly improves the imaging quality of TDI CCD space camera. 2011 IEEE.
a model of image motion calculation of nadir has been introduced
the calculation and analysis of the model shows that: the maximum error of image motion velocity about 1.72% has been decreased to 0.06%
and the influence of the geocentric distance error to the relative error of image motion velocity has been analyzed with the model
An improved destripe noises method for TDI-CCD images (EI CONFERENCE)
会议论文
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
He B.
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浏览/下载:18/0
  |  
提交时间:2013/03/25
The new destriping method using lifting wavelet transform by means of the improved threshold function is presented in this letter. It can overcome the deficiency of the hard and soft threshold function. As compared with the known threshold functions
the quality of the denoised images using the improved threshold function is much better. The results based on several image quality indexes present that the destriped images are not only visually more plausible but also suitable for analysis. Also it is reasonable in computer time and storage space to use the lifting wavelet transform. 2011 IEEE.
The research of the accurate measure of static transfer function for the TDI CCD camera (EI CONFERENCE)
会议论文
3rd International Photonics and OptoElectronics Meetings, POEM 2010, November 2, 2010 - November 5, 2010, Wuhan, China
Guo-Ning L.
;
Long-Xu J.
;
Jian-Yue R.
;
Wen-Hua W.
;
Shuang-Li H.
收藏
  |  
浏览/下载:17/0
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提交时间:2013/03/25
In the test course of static transfer function of TDI CCD camera
because of the influence that gets environmental and artificial etc. factor
the value of static transfer function measured at any time is between unceasing fluctuation
so
make accuracy reduce. To solve this problem
a kind of accurate measurement technique of static transfer function is put forward. First
before carrying out the measure of static quiet of transfer function
the best test point of transfer function of the TDI CCD camera must be determined
it is parallel to guarantee the rectangle target surface of parallel optical pipe and camera focal plane maintenance parallel
and again guarantee target strip in rectangle target and TDI CCD in camera focal plane maintenance vertical. TDI CCD catches rectangle target image
per 1000 lines of target mark image as a measures sample of static transfer function
exclude because of atmosphere tremble twisted
vague rectangle target mark image
retain 500 distinct and steady target mark image as measure sample set. Then
calculate the static transfer function of each measure sample respectively
take the average of all static quiet transfer function in measure sample set as the static transfer function of camera. Finally
the measure of the static transfer function for TDI CCD camera makes error analysis. Experimental results indicate that the value of the static transfer function of TDI CCD camera measured with this kind of method is 0.2923
with before measurement technique comparison
the value of static transfer function has raised 0.02
makes the accuracy of the measure of static transfer function have gotten raising.
The research of the accurate measure of static transfer function for the TDI CCD camera
会议论文
2011
Li G. N.
;
Jin L. X.
;
Ren J. Y.
;
Wang W. H.
;
Han S. L.
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  |  
浏览/下载:4/0
  |  
提交时间:2013/03/28
Research on Radiometric Calibration of Interline Transfer CCD Camera Based on TDI Working Mode
会议论文
2010
Wu X. X.
;
Liu J. G.
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  |  
浏览/下载:8/0
  |  
提交时间:2013/03/28
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