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浏览/检索结果: 共15条，第1-10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 Robust Computation of 3D Apollonius Diagrams 会议论文  OAI收割 2020 作者:  Wang, Peihui;  Yuan, Na;  Ma, Yuewen;  Xin, Shiqing;  He, Ying   |  收藏  |  浏览/下载：38/0  |  提交时间：2021/12/02 VORONOI-DIAGRAM  LAGUERRE GEOMETRY  ALGORITHM  SPHERES  TESSELLATIONS  CONSTRUCTION  TOPOLOGY   A cooperative spectrum sensing method based on information geometry and fuzzy c-means clustering algorithm 期刊论文  OAI收割 EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING, 2019, 页码: 12 作者:  Zhang, Shunchao;  Wang, Yonghua;  Li, Jiangfan;  Wan, Pin;  Zhang, Yongwei   |  收藏  |  浏览/下载：42/0  |  提交时间：2019/07/12 Cooperative spectrum sensing  Information geometry  Decomposition and recombination  Fuzzy c-means clustering algorithm   Focal beam analysis for 3D acquisition geometries in complex media with GPU implementation 期刊论文  OAI收割 COMPUTERS & GEOSCIENCES, 2018, 卷号: 118, 页码: 39-51 作者:  Su, Jun;  Fu, Li-Yun;  Wei, Wei;  Hu, Junhua;  Sun, Weijia   |  收藏  |  浏览/下载：43/0  |  提交时间：2018/09/26 Acquisition geometry  Focal beam analysis  GPU-based algorithm   Faulting structure above the Main Himalayan Thrust as shown by relocated aftershocks of the 2015 M(w)7.8 Gorkha, Nepal, earthquake 期刊论文  OAI收割 GEOPHYSICAL RESEARCH LETTERS, 2016, 卷号: 43, 期号: 2, 页码: 637-642 作者:  Bai, L;  Bai, L (Bai, Ling);  Ritsema, J (Ritsema, Jeroen);  Liu, HB (Liu, Hongbing);  Mori, J (Mori, James)   |  收藏  |  浏览/下载：26/0  |  提交时间：2017/11/09 Location Algorithm  Seismic Network  Collision Zone  Southern Tibet  Plate Beneath  Seismotectonics  Kathmandu  Geometry  Alos-2  Waves   Downstream ecosystem responses to middle reach regulation of river discharge in the Heihe River Basin, China 期刊论文  OAI收割 Hydrology and Earth System Sciences, 2016, 卷号: 20, 期号: 11, 页码: 4469-4481 作者:  Zhao, Yan;  Wei, Yongping;  Li, Shoubo;  Wu, Bingfang 收藏  |  浏览/下载：29/0  |  提交时间：2017/04/24 THERMAL INFRARED MEASUREMENTS  DIRECTIONAL ANISOTROPY  ALGORITHM  VEGETATION  RADIATION  PRODUCTS  GEOMETRY  FRANCE  SOIL   On Some Proximity Problems of Colored Sets 期刊论文  OAI收割 JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY, 2014, 卷号: 29, 期号: 5, 页码: 879-886 Fan, Cheng-Lin; Luo, Jun; Wang, Wen-Cheng; Zhong, Fa-Rong; Zhu, Binhai   |  收藏  |  浏览/下载：25/0  |  提交时间：2014/12/16 computational geometry  colored set  algorithm  maximum diameter color-spanning set problem   A parallel algorithm for constructing Voronoi diagrams based on point-set adaptive grouping SCI/SSCI论文  OAI收割 2014 Wang J. C.; Cui C.; Rui Y. K.; Cheng L.; Pu Y. X.; Wu W. Z.; Yuan Z. Y. 收藏  |  浏览/下载：37/0  |  提交时间：2014/12/24 Voronoi diagrams  parallel algorithm  adaptive grouping  geographical  information system  computational geometry   Research on infrared dim-point target detection and tracking under sea-sky-line complex background (EI CONFERENCE) 会议论文  OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China 作者:  Dong Y.-X.;  Zhang H.-B.;  Li Y.;  Li Y.;  Li Y. 收藏  |  浏览/下载：111/0  |  提交时间：2013/03/25 Target detection and tracking technology in infrared image is an important part of modern military defense system. Infrared dim-point targets detection and recognition under complex background is a difficulty and important strategic value and challenging research topic. The main objects that carrier-borne infrared vigilance system detected are sea-skimming aircrafts and missiles. Due to the characteristics of wide field of view of vigilance system  the target is usually under the sea clutter. Detection and recognition of the target will be taken great difficulties.There are some traditional point target detection algorithms  such as adaptive background prediction detecting method. When background has dispersion-decreasing structure  the traditional target detection algorithms would be more useful. But when the background has large gray gradient  such as sea-sky-line  sea waves etc.The bigger false-alarm rate will be taken in these local area.It could not obtain satisfactory results. Because dim-point target itself does not have obvious geometry or texture feature  in our opinion  from the perspective of mathematics  the detection of dim-point targets in image is about singular function analysis.And from the perspective image processing analysis  the judgment of isolated singularity in the image is key problem. The foregoing points for dim-point targets detection  its essence is a separation of target and background of different singularity characteristics.The image from infrared sensor usually accompanied by different kinds of noise. These external noises could be caused by the complicated background or from the sensor itself. The noise might affect target detection and tracking. Therefore  the purpose of the image preprocessing is to reduce the effects from noise  also to raise the SNR of image  and to increase the contrast of target and background. According to the low sea-skimming infrared flying small target characteristics  the median filter is used to eliminate noise  improve signal-to-noise ratio  then the multi-point multi-storey vertical Sobel algorithm will be used to detect the sea-sky-line  so that we can segment sea and sky in the image. Finally using centroid tracking method to capture and trace target. This method has been successfully used to trace target under the sea-sky complex background. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).   Generation of 2D conforming voronoi diagram in complex domain 会议论文  OAI收割 2011 International Conference on Applied Informatics and Communication, ICAIC 2011, Xi An, AUG 20-21, 2011 作者:  Li Q;  Li HS;  Cai Q;  Liu YW(刘曰武) 收藏  |  浏览/下载：25/0  |  提交时间：2013/02/26 Algorithms  Computational geometry  Information science  Two dimensional  Complex domains  conforming  Delaunay triangulation  Generation algorithm  Sufficient conditions  Voronoi cell  Voronoi diagram  Voronoi diagrams   multi-layer depth peeling via fragment sort 会议论文  OAI收割 11th International Conference on Computer-Aided Design and Computer Graphics, Yellow Mountain City, PEOPLES R CHINA, AUG 19-21, Liu Baoquan; Wei Li-Yi; Xu Ying-Qing; Wu Enhua   |  收藏  |  浏览/下载：24/0  |  提交时间：2011/03/20 GPU  MRT  RGBA8 color precision  fragment sort program  graphics hardware  multilayer accelerated depth peeling algorithm  multiple fragment color  multiple fragment depth  order-independent transparency scene rendering  transparency ordering  transparent geometry  transparent pixel  unreliable parallel read-after-write behavior  colour graphics  computational geometry  rendering (computer graphics)  sorting