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浏览/检索结果: 共5条，第1-5条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 PCPD: A Parallel Crime Pattern Discovery System for Large-Scale Spatiotemporal Data Based on Fuzzy Clustering 期刊论文 International Journal of Fuzzy Systems, 2019, 卷号: Vol.21 No.6, 页码: 1961-1974 作者:  Khin Nandar Win;  Jianguo Chen;  Yuedan Chen;  Philippe Fournier-Viger 收藏  |  浏览/下载：22/0  |  提交时间：2019/12/13 Big data  Criminal pattern discovering  Fuzzy clustering  Hotspot locating  Parallel computing  Spatiotemporal data   PCPD: A Parallel Crime Pattern Discovery System for Large-Scale Spatiotemporal Data Based on Fuzzy Clustering 期刊论文 INTERNATIONAL JOURNAL OF FUZZY SYSTEMS, 2019, 卷号: Vol.21 No.6, 页码: 1961-1974 作者:  Win, KN;  Chen, JG;  Chen, YD;  Fournier-Viger, P 收藏  |  浏览/下载：20/0  |  提交时间：2019/12/17 Big data  Criminal pattern discovering  Fuzzy clustering  Hotspot locating  Parallel computing  Spatiotemporal data   7功能水下液压机械手轨迹规划研究 学位论文 硕士: 中国科学院沈阳自动化研究所, 2014 作者:  曲风杰 收藏  |  浏览/下载：62/0  |  提交时间：2014/07/18 7功能水下液压机械手  液压特性分析  五次多项式  三次B样条  梯度投影法   大规模人脸识别监控系统研究与实现 学位论文 工程硕士, 中国科学院自动化研究所: 中国科学院大学, 2013 李守斌 收藏  |  浏览/下载：156/0  |  提交时间：2015/09/02 人脸识别  视频监控  分布式  负载均衡  Face Recognition  Video Surveillance  Distributed System  Load Balancing   Active pixel sensor geometrical characteristic effects on star image subdivided locating accuracy for star tracker (EI CONFERENCE) 会议论文 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China Li J.; Liu J.; Hao Z. 收藏  |  浏览/下载：21/0  |  提交时间：2013/03/25 Active pixel sensor (APS) star tracker becomes an investigated hotspot because of its technical advantages. And centroid algorithm is a subpixel method proper to star position calculation because of its high accuracy and simplicity. When centroid algorithm is applied on APS star tracker  APS pixel geometrical characteristics might effect on star image position accuracy. Because the amplifier circuit and other function circuits inter pixel of APS take up some pixel area  the Fill Factor is less than 100%. Moreover  the active sensitive area has a certain geometrical shape  such as square  rectangle and L shape. The Fill Factor of pixel influences on star image subdivided locating accuracy when using centioid algorithm. In this paper  we have analyzed all pixel geometrical characteristics influence on the star position accuracy. From simulation experiments  we can conclude that Fill factor and pixel geometric shape influence on star position accuracy. The star locating error increased when Fill Factor decreased  and different geometrical shape of active sensitive area of pixel can make different influence on star location accuracy  the symmetrical sensitive area in x or y axis have symmetrical location error in the same axis.