机构

• 地理科学与资源研究所 [2]
• 长春光学精密机械与物... [1]

采集方式

• OAI收割 [3]

内容类型

• SCI/SSCI论文 [1]
• 会议论文 [1]
• 期刊论文 [1]

发表日期

• 2014 [2]
• 2006 [1]

学科主题

筛选

浏览/检索结果: 共3条，第1-3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 Response of streamflow to climate change and human activity in Xitiaoxi river basin in China SCI/SSCI论文  OAI收割 2014 Zhang C. Q.; Zhang B. A.; Li W. H.; Liu M. C. 收藏  |  浏览/下载：26/0  |  提交时间：2014/12/24 land use change  climate change  streamflow trends  Mann-Kendall  moving  t-test  land-use changes  hydrological response  change scenarios  catchment  runoff  impact  model  evapotranspiration  trend   Response of streamflow to climate change and human activity in Xitiaoxi river basin in China 期刊论文  OAI收割 HYDROLOGICAL PROCESSES, 2014, 卷号: 28, 期号: 1, 页码: 43-50 Zhang, CanQiang(张灿强); Zhang, BA; Li, WH; Liu, MC 收藏  |  浏览/下载：23/0  |  提交时间：2014/05/06 land use change  climate change  streamflow trends  Mann-Kendall  moving t-test   Detection and tracking of low contrast targets based on integertype lifting wavelet transform (EI CONFERENCE) 会议论文  OAI收割 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Wang L.;  Wang L.;  Wang Y.;  Wang Y.;  Wang Y. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 This paper presents a method for detecting and tracking of low contrast targets. The new method uses an integer-type lifting wavelet transform and the proposed method doesn't extract patterns similar to a template  but finds parts having the same feature in the targets. We utilize one of integer-type lifting wavelet transforms that contains rounding-off arithmetic for mapping integers to integers. The lifting term contains parameters that are learned by using standard training images of targets. We assume that the targets include many high frequency components. In order to obtain the features of the targets  the lifting parameters are determined by a condition that high frequency components are vanished in wavelet transform. But the condition cannot be determined by the parameters wholly. So  we put an additional condition of minimizing the squared sum of the lifting parameters. The advantage of using integer-type wavelet transform is simple and robust to noise. Simulation illustrated the approach can detect and track the moving targets in dim background. We would test our algorithm in the TV tracking system.