Title :
Analysis of narrow ridge estimation for linear CCD RFM model and its application
Author :
Yan, Dongmei ; Kou, Tianyou ; Wang, Fenfei ; Chen, Fen
Author_Institution :
Center for Earth Obs. & Digital Earth, Beijing, China
Abstract :
According to the morbid matrix produced in solving the Rational Function Model (RFM), we adopted the narrow ridge estimation method to overcome this difficulty. After analysis of this method based on limitation and computational theory, we theoretically predicted an interval, guiding us to conduct following experiments using enormous Spot5 satellite images. Results demonstrated the existence of the interval. Error decay curves showed that when the ridge estimator was between [10-10, 10-5], RFM fitted well the rigorous sensor model (RSM) and both accuracy and stability were well balanced. Besides, proposals with different grids were compared and contrasted as well as a panchromatic image.
Keywords :
CCD image sensors; geophysical signal processing; image processing; remote sensing; RSM; Spot5 satellite images; error decay curves; linear CCD RFM model; morbid matrix; narrow ridge estimation; rational function model; ridge estimator; rigorous sensor model; Charge coupled devices; Equations; Geoscience; Image analysis; Polynomials; Satellites; Solid modeling; Stability; TV; World Wide Web; Rational function model; narrow ridge estimation; optimal interval; robust;
Conference_Titel :
Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009
Conference_Location :
Cape Town
Print_ISBN :
978-1-4244-3394-0
Electronic_ISBN :
978-1-4244-3395-7
DOI :
10.1109/IGARSS.2009.5417402
