机构

• 长春光学精密机械与物... [2]
• 自动化研究所 [2]
• 理论物理研究所 [1]
• 遥感与数字地球研究所 [1]

采集方式

• OAI收割 [6]

内容类型

• 期刊论文 [4]
• 会议论文 [2]

发表日期

• 2021 [1]
• 2019 [1]
• 2015 [1]
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• 2012 [1]
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学科主题

• Physics [1]

筛选

浏览/检索结果: 共6条，第1-6条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 A Novel Sparse Geometric 3-D LiDAR Odometry Approach 期刊论文  OAI收割 IEEE SYSTEMS JOURNAL, 2021, 卷号: 15, 期号: 1, 页码: 1390-1400 作者:  Liang, Shuang;  Cao, Zhiqiang;  Guan, Peiyu;  Wang, Chengpeng;  Yu, Junzhi   |  收藏  |  浏览/下载：28/0  |  提交时间：2021/05/06 Laser radar  Feature extraction  Simultaneous localization and mapping  Three-dimensional displays  Computational complexity  Distance measurement  Lighting  Line and plane features  line-to-line and plane-to-plane associations  sparse geometric map  3-D light detection and ranging (LiDAR) odometry   Efficient conic fitting with an analytical Polar-N-Direction geometric distance 期刊论文  OAI收割 Pattern Recognition, 2019, 卷号: 90, 期号: 6, 页码: 415-423 作者:  Wu YH(吴毅红);  Wang HR(王浩人);  Tang FL(唐付林);  Wang ZH(王志衡);  Wu, Yihong   |  收藏  |  浏览/下载：86/0  |  提交时间：2019/05/06 Conic Fitting  Geometric Distance  Sampson Distance   A generic framework for image rectification using multiple types of feature 期刊论文  OAI收割 ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING, 2015, 卷号: 102, 页码: 2449-2470 作者:  Long, Tengfei;  Jiao, Weili;  He, Guojin;  Zhang, Zhaoming;  Cheng, Bo 收藏  |  浏览/下载：22/0  |  提交时间：2016/04/20 Geometric  Rectification  Orientation  Multiple features  Hausdorff distance  Imaging model   Advanced astigmatism-corrected tandem Wadsworth mounting for small-scale spectral broadband imaging spectrometer (EI CONFERENCE) 会议论文  OAI收割 作者:  Lin G.-Y. 收藏  |  浏览/下载：35/0  |  提交时间：2013/03/25 Tandem gratings of double-dispersion mount make it possible to design an imaging spectrometer for the weak light observation with high spatial resolution  high spectral resolution  and high optical transmission efficiency. The traditional tandem Wadsworth mounting is originally designed to match the coaxial telescope and large-scale imaging spectrometer. When it is used to connect the off-axis telescope such as off-axis parabolic mirror  it presents lower imaging quality than to connect the coaxial telescope. It may also introduce interference among the detector and the optical elements as it is applied to the short focal length and small-scale spectrometer in a close volume by satellite. An advanced tandem Wadsworth mounting has been investigated to deal with the situation. The Wadsworth astigmatism-corrected mounting condition for which is expressed as the distance between the second concave grating and the imaging plane is calculated. Then the optimum arrangement for the first plane grating and the second concave grating  which make the anterior Wadsworth condition fulfilling each wavelength  is analyzed by the geometric and first order differential calculation. These two arrangements comprise the advanced Wadsworth mounting condition. The spectral resolution has also been calculated by these conditions. An example designed by the optimum theory proves that the advanced tandem Wadsworth mounting performs excellently in spectral broadband. 2012 Optical Society of America.   MODELING TIME-VARYING DARK ENERGY WITH CONSTRAINTS FROM LATEST OBSERVATIONS 期刊论文  OAI收割 MODERN PHYSICS LETTERS A, 2012, 卷号: 27, 期号: 10, 页码: 1250030 作者:  Wu, YL 收藏  |  浏览/下载：19/0  |  提交时间：2014/04/25 DIGITAL SKY SURVEY  HUBBLE-SPACE-TELESCOPE  COSMOLOGICAL CONSTANT  GEOMETRIC DISTANCE  GALAXY NGC-4258  SUPERNOVAE  MATTER  SCALE  OSCILLATIONS  QUINTESSENCE   Optimal multiresolution dynamic models generation based on triangle importance (EI CONFERENCE) 会议论文  OAI收割 2nd International Conference on Image Analysis and Signal Processing, IASP'2010, April 12, 2010 - April 14, 2010, Xiamen, China 作者:  Zhao J.;  Zhang S. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 In this paper  we propose an efficient method to generate optimal multiresolution dynamic models. By the method  we define the triangle importance degree as a weight parameter to be embedded to the edge contraction cost  so the new metric can not only measure distance error but also reflect geometric variation of local areas. A deformation degree weight is appended to the aggregated edge contraction cost for the whole animation  thus sharp features on areas with large deformation can be preserved. In addition  a process of mesh optimization and validity check can further alleviate the geometric distortion of the approximations. Our approach is efficient in operation  easy for implementation  and as a result high quality of dynamic approximations with well-preserved fine details can be generated at any given frame. 2010 IEEE.