The standard paddy rice NDVI time series curve was extracted according to the present land use map and empirical observation. The shape similarity distance of MODIS-NDVI time series curve compared with standard paddy rice growth curve was calculated by Fourier shape descriptor. And then, the threshold value, which was detected by similarity distance between samples and unknown pixel data, was used to distinguish the double cropping paddy rice planting zones. Validation of the method was conducted in Jianghan Plain in 2010.The results show that the planting zones error of double cropping paddy ...
