首页> 外文会议>Geoscience and Remote Sensing, 1997. IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development., 1997 IEEE International >On-line system for monitoring and forecasting Earth surface changes using sequences of remotely-sensed imagery
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On-line system for monitoring and forecasting Earth surface changes using sequences of remotely-sensed imagery

机译:使用遥感影像序列监测和预测地球表面变化的在线系统

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Irregular temporal sampling is a common feature of geophysical and biological time series in remote sensing. This study develops an on-line system for monitoring and forecasting ground surface changes by adaptively generating an appropriate synthetic time series at regular interval with recovering missing measurements for sequential images that are compiled at irregular time interval from Earth ground. The proposed system integrates an adaptive reconstruction technique and a classification algorithm. The reconstruction method incorporates temporal variation according to physical properties of targets and anisotropic spatial optical properties into image processing techniques. The classification algorithm segments each image frame by partitioning into physically meaningful regions whose statistics are expected to depend on the physical properties of the region. This adaptive approach allows successive refinement of the structure of objects that are barely detectable in the observed series and monitoring of temporal variation in surface characteristics by observing statistical changes between contiguous image frames in the adaptive system.
机译:不规则的时间采样是遥感中地球物理和生物时间序列的共同特征。这项研究开发了一种在线系统,该系统通过以规则的间隔自适应地生成适当的合成时间序列,并为从地面以不规则的时间间隔编译的连续图像恢复丢失的测量值,来自适应地生成适当的合成时间序列。提出的系统集成了自适应重建技术和分类算法。该重建方法将根据目标的物理特性和各向异性空间光学特性的时间变化纳入图像处理技术。分类算法通过划分为物理上有意义的区域来分割每个图像帧,这些区域的统计数据预计将取决于该区域的物理属性。这种自适应方法允许对观察到的序列中几乎无法检测到的对象结构进行连续细化,并通过观察自适应系统中连续图像帧之间的统计变化来监视表面特征的时间变化。

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