Growth Stage Determination of Rice Fields: Preliminary Results

The objective of this study is to provide an efficient method to determine the growth stages of rice fields by polarimetric SAR (PolSAR). The proposed approach is based on two main components: a theoretical backscattering model and a proposed solution-space search algorithm. The solutionspace is generated using the scattering model for different polarization settings. Later, sets of structures are filtered using the intensity values of the SAR data. Next, filtered values of different polarizations are matched for their morphological consistencies. Then, resulting set of structures are confirmed with respect to growth constraints. Finally, the growth stages of fields are determined by means of the BBCH scale. Proposed method is tested over co-polar TerraSAR-X (TSX) data. Also the proposed algorithm is carried out by exploiting a single acquisition, without other additional information.