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长春光学精密机械与物... [3]
上海技术物理研究所 [2]
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OAI收割 [7]
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会议论文 [4]
期刊论文 [3]
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2010 [2]
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Method of improving the accuracy of image motion measurement for panoramic aerial cameras (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:
Jia P.
收藏
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浏览/下载:29/0
  |  
提交时间:2013/03/25
To improve the accuracy of image motion measurement for panoramic aerial cameras
the paper proposed a method of real-time image motion measurement based on 2D spatial correlation. An auxiliary area CCD is positioned paralleled to the main linear TDI CCD in the focal plane of the camera. For every frame of the image sequence taken by the auxiliary CCD
a prediction on the displacement of the current image in the flight direction is made based on the forward image motion velocity. The current and the reference images are combined together for 2D-correlation
which products an image motion vector. By decomposing the vector
both the forward and pendulum-swing image motions can be determined. The demanding computational requirements for the real-time 2D-correlation are covered by a joint transform optical correlator. Simulation test results show that the accuracy is improved and the measurement error is within 0.2 pixels for input images with SNR=1 dB. 2010 Copyright SPIE - The International Society for Optical Engineering.
Panoramic aerial camera image motion measurement using a hybrid 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
作者:
Jia P.
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2013/03/25
Image motion compensation is significantly important for aerial camera photograph. To execute the compensation
we must determine the image motion exactly. This paper proposes a method of real-time image motion measurement for panoramic aerial cameras based on image processing using a hybrid system. Two cameras are simultaneously used in the hybrid system. One main linear CCD for imaging
while the other auxiliary low resolution high frame rate area CCD for determining the image motion based on 2D spatial correlation. The demanding computational requirements for the real-time 2D spatial correlation are covered by a joint transform optical correlator. Simulation test results show that the accuracy is improved and the measurement error is within 0.2 pixels for input images with SNR=1 dB. 2010 IEEE.
Input plane preprocessing of joint transform correlator based on Swarm Intelligence (EI CONFERENCE)
会议论文
OAI收割
2009 2nd International Congress on Image and Signal Processing, CISP'09, October 17, 2009 - October 19, 2009, Tianjin, China
Yong W.
;
Ming Z.
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  |  
浏览/下载:29/0
  |  
提交时间:2013/03/25
Input plane image preprocessing can improve the performance of Joint Transform Correlator(JTC). Swarm Intelligence based image processing method is consistent with the parallel characteristic of optical signal processing method. In this paper
A Swarm Intelligence based input plane preprocessing method is proposed. Some other methods are also used to perform the task
such as grayscale transform
Sobel operator and mathematical morphology. The experimental results show that the performance of the proposed Swarm Intelligence preprocessing based JTC is better than that of the JTC based on other preprocessing methods. 2009 IEEE.
A Visual Feedback Approach for Focal Plane Stabilization of a High Resolution Space Camera
期刊论文
OAI收割
Automatisierungstechnik, 2005, 卷号: 53, 期号: 10, 页码: 484-492
-
收藏
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浏览/下载:19/0
  |  
提交时间:2016/05/16
image motion stabilization
optical correlator
opto-mechatronics
pushbroom camera
remote sensing
visual feedback
Optical Correlator for Image Motion Compensation in the Focal Plane of A Satellite Camera
会议论文
OAI收割
15th IFAC Symposium on Automatic Control in Aerospace
-
收藏
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浏览/下载:10/0
  |  
提交时间:2016/05/16
visual feedback
optical correlator
image motion compensation
One-step digit-set-restricted modified signed-digit adder using an incoherent correlator based on a shared content-addressable memory
期刊论文
OAI收割
opt. eng., 2002, 卷号: 41, 期号: 10, 页码: 2607, 2612
Qian F
;
Li GQ
;
Alam MS
收藏
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浏览/下载:1891/338
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提交时间:2009/09/18
optical information processing
shared content-addressable memory
incoherent correlator
Anisotropic self-diffraction under Bragg mismatching
期刊论文
OAI收割
APPLIED PHYSICS B-LASERS AND OPTICS, 2001, 卷号: 72, 期号: 6, 页码: 691
Wang, B
;
Sun, CC
;
Yang, TH
;
Ye, P
;
Chang, JY
收藏
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浏览/下载:17/0
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提交时间:2013/09/17
VOLUME-HOLOGRAPHIC CORRELATOR
COHERENT OPTICAL CONVERTER
BATIO3