·2,447,543篇论文数据，部分数据来源于NoteExpress
The first step was large-scale segmentation, in which the image was classified as vegetation and non-vegetation by NDVI. The second step was small-scale segmentation;
然后在植被信息类内再进行小尺度分割，利用NDVI并融入几何特征进 一步提取冬小麦种植面积及空间分布。
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