The appearance of commercial high-resolution satellite data supplies new resources for people to study crown structure of a tree by using remote sensing technique.
商用高空间分辨率卫星数据的出现，为人们利用遥感技术研究树冠结构提供了新的数据源。
In recent years, the new high spatial resolution remote sensing data continuously come up and provide convenience for the urban research.
近年来，新的高空间分辨率遥感数据不断涌现，为城市研究提供了便利。
Huge amounts of data, the complexity of details and scale-dependent characteristics decide the technical problems of high resolution remote sensing images processing.
而海量数据、复杂细节和尺度依赖的特点决定了高分辨率遥感影像处理的技术难点。
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