中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Image Semantic Segmentation Based on High-Resolution Networks for Monitoring Agricultural Vegetation 会议论文  OAI收割
ELECTR NETWORK, 2020-09-01
作者:  
Ganchenko, V;  Starovoitov, V;  Zheng, XT
  |  收藏  |  浏览/下载:25/0  |  提交时间:2021/09/02
Weakly Supervised Multimodal Kernel for Categorizing Aerial Photographs 期刊论文  OAI收割
ieee transactions on image processing, 2017, 卷号: 26, 期号: 8, 页码: 3748-3758
作者:  
Xia, Yingjie;  Zhang, Luming;  Liu, Zhenguang;  Nie, Liqiang;  Li, Xuelong
收藏  |  浏览/下载:27/0  |  提交时间:2017/07/06
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.  
A design on a control method of a new type of focal plane shutter (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Xue L.; Ming L.; Zheng L.-N.; Zhou J.-F.; Zhang H.-W.; Zhang J.-C.
收藏  |  浏览/下载:33/0  |  提交时间:2013/03/25
In order to ensure appropriate exposure time  and no exposure while electric charge is transferring after taking a photograph  it is necessary to have the shutter mechanism cooperate with CCD for area CCD aerial cameras. The ground object illumination has a wide range which is from 4000Lx to 100000Lx  so a shutter which is high efficient and a continuous stepless adjustment are also required. This paper introduces the fundamental principle  structural design and control procedure about this new focal plane shutter. Under the control of DSP  the velocity of shutter curtain governed by the shutter motor can be not only precisely controlled  but also the durability and the reliability are increased. The experiment results have shown that this new shutter has the higher stability of movement  long life span with more than 105 operating times  a wide range of exposure time from1/ 50s to 1/ 320s(depending on the slit width)and the exposure error is less than 10%. With the CCD gain adjustment  the performance of this shutter is fully satisfied with the requirements of area CCD aerial cameras. 2010 IEEE.  
Multiple spatial data based change analysis of Northern-Five Lakes over the past century 会议论文  OAI收割
Sixth International Symposium on Digital Earth: Data Processing and Applications, Bellingham
Deng, Biao; Nie, Yueping; Guo, Huadong
收藏  |  浏览/下载:26/0  |  提交时间:2014/12/07