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浏览/检索结果: 共5条，第1-5条 帮助 限定条件 专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     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 Adaptive Slicing Method of the Spatiotemporal Event Stream Obtained from a Dynamic Vision Sensor 期刊论文 Sensors, 2022, 卷号: 22, 期号: 7, 页码: 20 作者:  Y. S. Zhang;  Y. C. Zhao;  H. Y. Lv;  Y. Feng;  H. L. Liu and C. S. Han 收藏  |  浏览/下载：0/0  |  提交时间：2023/06/14 The Effect of Compressible Flow on Heat Transfer Performance of Heat Exchanger by Computational Fluid Dynamics (CFD) Simulation 期刊论文 Entropy, 2019, 卷号: 21, 期号: 9, 页码: 12 作者:  C.Yu;  S.C.Qin;  B.S.Chai;  S.Huang;  Y.Liu 收藏  |  浏览/下载：1/0  |  提交时间：2020/08/24 water cooled charge air cooler (WCAC),compressible flow,computational,fluid dynamics (CFD),heat transfer,plate-fin,Physics   Detection of P2P botnet based on network behavior features and Dezert-Smarandache theory 期刊论文 Journal of Southeast University (English Edition), 2018, 卷号: 34, 期号: 2, 页码: 191-198 作者:  Song, Yuanzhang;  Chen, Yuan;  Wang, Junjie;  Wang, Anbang;  Li, Hongyu 收藏  |  浏览/下载：12/0  |  提交时间：2019/09/17 Peer to peer networks  Botnet  Entropy  Feature extraction  Kalman filters  Network protocols   基于局部视觉特征的图像质量客观评价方法研究 学位论文 博士: 中国科学院大学, 2015 作者:  卢彦飞 收藏  |  浏览/下载：145/0  |  提交时间：2015/11/30 人类视觉系统  局部信息失真  Riesz变换  韦伯定律  差异激励  视觉显著性  单演相位一致性   An improved two-dimensional entropy method for star trail tracing in deep sky (EI CONFERENCE) 会议论文 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China Yao Z.-J.; Wang Y.-J.; Han Q.-L. 收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25 The trace of star trail is an important component of deep sky detection. The stars are low contrast targets  and their self-rotation will make their brightness change in cycle. Above all  the trail trace is vulnerable to the block and disturbance of other stars. Traditional one-dimensional maximum entropy thresholding algorithm is vulnerable to the noise  and the calculation of two-dimensional entropy methods is too large and takes too much time. This paper proposes an improved two-dimensional entropy threshold algorithm. We use recursion iteration method to eliminate the redundancy calculation  and reduce the size of two-dimensional histogram based on the deep sky stars characteristic  such as low contrast  fuzziness and the centralized histogram. We also combine our algorithm with the space trail trace model to forecast the star trace. Experiments results show  when the star are blocked or they turn dark  the method still can well extrapolate the star trace. Our method improves the capability of trailing the ebb and small star  and increases the precision of tracing. It is also robust to the noise  so there is a good application foreground for the method.