中国科学院机构知识库网格
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]
自动化研究所 [2]
地理科学与资源研究所 [1]
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OAI收割 [5]
内容类型
期刊论文 [3]
会议论文 [2]
发表日期
2024 [1]
2018 [1]
2014 [1]
2011 [1]
2008 [1]
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Mapping property redevelopment via GeoAI: Integrating computer vision and socioenvironmental patterns and processes
期刊论文
OAI收割
CITIES, 2024, 卷号: 144, 页码: 104644
作者:
Liu, Cheng
;
Song, Weixuan
  |  
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2024/01/04
Physical urban change
Gentrification
Regeneration
Street view imagery
Deep learning
(MCD)-C-4: A Robust Change Detection Method for Intelligent Visual Surveillance
期刊论文
OAI收割
IEEE ACCESS, 2018, 卷号: 6, 页码: 15505-15520
作者:
Wang, Kunfeng
;
Gou, Chao
;
Wang, Fei-Yue
  |  
收藏
  |  
浏览/下载:26/0
  |  
提交时间:2018/10/10
Change Detection
Multimodal Background
Multi-view Learning
Conditional Independence
Markov Random Field
Recognizing Gaits Across Views Through Correlated Motion Co-Clustering
期刊论文
OAI收割
IEEE TRANSACTIONS ON IMAGE PROCESSING, 2014, 卷号: 23, 期号: 2, 页码: 696-709
作者:
Kusakunniran, Worapan
;
Wu, Qiang
;
Zhang, Jian
;
Li, Hongdong
;
Wang, Liang
收藏
  |  
浏览/下载:71/0
  |  
提交时间:2015/09/18
Gait recognition
human identification
view change
co-clustering
bipartite graph multipartitioning
canonical correlation analysis
Effect of gimbal point displacement on optical axis pointing precision in an image seeker (EI CONFERENCE)
会议论文
OAI收割
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
作者:
Zhang X.
;
Zhang X.
;
Zhang X.
收藏
  |  
浏览/下载:39/0
  |  
提交时间:2013/03/25
A concentric glass spherical dome was usually chosen as the transparent window mounted in front of the optical lens in an image seeker. However
optical ray had to change its direction when propagating through the dome due to refraction unless passing through the center of the dome
which demanded gimbal point coincide with the center of the dome exactly. In fact
gimbal point displacement could not be eliminating due to fabrication
assembly and vibration
therefore the optical axis pointing error generated. In this paper
the effect of gimbal point displacement on optical axis pointing precision in an image seeker was analyzed
and the theoretical expression of the optical axis pointing error was derived based on geometric optics
and the error dynamics was explored by numerical. Take a visible light image seeker as a case
the thickness of concentric glass spherical dome was 8mm and the inner radius was 72mm
and the optical axis pointing errors varying dynamically with the look angle and the gimbal point displacement were shown in graph. When the gimbal displacement was 0.11mm
the maximum optical axis pointing error was 0.054mrad that is equal to the instantaneous field of view (IFOV) corresponding to the camera system whose focal length was 120mm and pixel size was 6.5m. Furthermore
with the gimbal displacement increasing
the optical axis pointing error increased linearly. The analyzed results provided a theoretical basis for the displacement range
which had to be limited strictly in the gimbal design process. 2011 IEEE.
Design of a three field-of-view IR system (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Optoelectronic System Design, Manufacturing, and Testings, September 9, 2007 - September 12, 2007, Beijing, China
作者:
Wang Y.
;
Jiang H.
;
Wang Y.
;
Wang Y.
;
Wang Y.
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2013/03/25
The design method and result are described for an infrared zoom system with three fields of view. Its zoom ratio is 9
and the corresponding field of view is 3-27. The working waveband is from 3 m to 5m
and using the rotated elements in the system it is easy to change the field-of-view and satisfied the cooled detector requirements.
and its total length is required to be no more than 400mm. The final optical system consists of 9 elements
with two aspheric surfaces and a diffractive optical element. It achieves diffraction-limited imaging at the middle infrared waveband. From the last result we can know using the diffractive optical elements can eliminate the color aberration and helps to reduce the cost of the system