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A fast and robust method of calculating RFM parameters for satellite imagery
- Wu, Yingdan, Ming, Yang
- Remote sensing letters 2016 v.7 no.12 pp. 1112-1120
- algorithms, equations, models, remote sensing, satellites
- Since the normal matrix is often ill-conditioned when solving Rational Function Model (RFM) for the satellite remote sensing imagery, combining with matrix orthogonal decomposition, Levenberg–Marquardt algorithm and Compute Unified Device Architecture high-performance computing technique, a fast and robust method directly based on the error equation coefficient matrix is proposed. The method is analysed by different parameters of control point grid and compared with the common methods, namely L-curve based ridge estimation and Iteration by Correcting Characteristic Value. The experimental results show that RFM parameters derived by our method have higher fitting accuracy.