中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共6条,第1-6条 帮助

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Digital restoration of the pectoral girdles of two Early Cretaceous birds and implications for early-flight evolution 期刊论文  OAI收割
ELIFE, 2022, 卷号: 11, 页码: 18
作者:  
Wang, Shiying;  Ma, Yubo;  Wu, Qian;  Wang, Min;  Hu, Dongyu
  |  收藏  |  浏览/下载:49/0  |  提交时间:2022/09/16
Adding Active Learning to LWR for Ping-Pong Playing Robot 期刊论文  OAI收割
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 2013, 卷号: 21, 期号: 4, 页码: 1489-1494
作者:  
Huang, Yanlong
收藏  |  浏览/下载:30/0  |  提交时间:2015/08/12
汉语语音识别中随机段模型优化算法研究 学位论文  OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2012
作者:  
晁浩
收藏  |  浏览/下载:39/0  |  提交时间:2015/09/02
High precision test method for dynamic imaging of space camera (EI CONFERENCE) 会议论文  OAI收割
2010 IEEE International Conference on Advanced Computer Control, ICACC 2010, March 27, 2010 - March 29, 2010, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
作者:  
Jin L.-X.;  Zhang K.;  Zhang K.;  Zhang K.;  Zhang K.
收藏  |  浏览/下载:32/0  |  提交时间:2013/03/25
A test method for dynamic imaging of space TDICCD (Time Delay and Integration Charge Coupled Devices) camera was presented in this paper. The test method adopted the PLL (Phase Locked Loop) technology and CMAC (Cerebella Model Articulation Controller) friction compensation as control strategy. Furthermore  According to this method  a test system for dynamic imaging of space TDICCD camera was designed and implemented. The system simulated the movement of the ground objects relative to the space aerocraft  to validate the capability of image speed match and the dynamic imaging quality of TDICCD camera. The design adopted a precision turntable and a drift turntable to simulate the movement around the earth and the drift motion in different latitude due to the rotation of earth  of the aerocraft. The turntables were drived by permanent magnet torque motor which was powered by PWM (Pulse Width Modulation). The system adopted DSP (Digital Signal Processor) as the control core and reached a very high performance. The experimental results showed that the steady speed error was better than 0.01 % and the instantaneous speed error reached 0.0267%. The precision of the test system designed met the requirement for dynamic imaging of TDICCD camera. 2010 IEEE.  
New long-tailed pterosaurs (Wukongopteridae) from western Liaoning, China 期刊论文  OAI收割
AN ACAD BRAS CIENC, 2010, 卷号: 82, 期号: 4, 页码: 1045—1062
作者:  
Wang, Xiaolin
收藏  |  浏览/下载:26/0  |  提交时间:2013/11/27
The geometric distortions correction of uncooled large-sized relative aperture infrared imaging system (EI CONFERENCE) 会议论文  OAI收割
Infrared Components and their Applications, November 8, 2004 - November 11, 2004, Beijing, China
作者:  
Sun Q.
收藏  |  浏览/下载:22/0  |  提交时间:2013/03/25
The geometric distortion of infrared image  which was created by the large-sized relative aperture optical system. It could be corrected by the digital image processing technology. The magnitude of distortion would be enlarged quickly with the enlargement of relative aperture. Though the distortion could not impact on the articulation of the image  it would affect geometric location precision of the image directly. In this paper  the distortion correction of uncooled large-sized relative aperture infrared imaging system was discussed and the mathematical model of distortion correction was established. A algorithm of digital image processing was presented and applied based on control points by combining polynomial warping and space variant linear image interpolation. The method of polynomial warping was used to establish the locality relationship between the original image and the distortion ones. The space-variant linear image interpolation provided an efficient way to rebuild the frame of images. The computational costs of the proposed approach are very little and the precision is almost as high as the method of bicubic interpolation when compared to those of state-of-the-art nonlinear interpolation operators.