04088nam 2200709 450 991048405100332120210217233338.01-280-85346-897866108534653-540-71227-510.1007/978-3-540-71227-5(CKB)1000000000282963(SSID)ssj0000303140(PQKBManifestationID)11232697(PQKBTitleCode)TC0000303140(PQKBWorkID)10275133(PQKB)10935281(DE-He213)978-3-540-71227-5(MiAaPQ)EBC3036628(MiAaPQ)EBC4435036(MiAaPQ)EBC6351724(Au-PeEL)EBL4435036(CaONFJC)MIL85346(OCoLC)191468003(PPN)123726905(EXLCZ)99100000000028296320210217d2007 uy 0engurnn|008mamaatxtccrThe method of approximate inverse theory and applications /Thomas Schuster1st ed. 2007.Berlin, Germany ;New York, New York :Springer,[2007]©20071 online resource (XIV, 202 p. 35 illus.) Lecture notes in mathematics ;1906Revised habilitation - Universität des Saarlandes, Saarbrücken, 2004.3-540-71226-7 Includes bibliographical references (pages [189]-195).Inverse and Semi-discrete Problems -- Ill-posed problems and regularization methods -- Approximate inverse in L 2-spaces -- Approximate inverse in Hilbert spaces -- Approximate inverse in distribution spaces -- Conclusion and perspectives -- Application to 3D Doppler Tomography -- A semi-discrete setup for Doppler tomography -- Solving the semi-discrete problem -- Convergence and stability -- Approaches for defect correction -- Conclusion and perspectives -- Application to the spherical mean operator -- The spherical mean operator -- Design of a mollifier -- Computation of reconstruction kernels -- Numerical experiments -- Conclusion and perspectives -- Further Applications -- Approximate inverse and X-ray diffractometry -- A filtered backprojection algorithm -- Computation of reconstruction kernels in 3D computerized tomography -- Conclusion and perspectives.Inverse problems arise whenever one tries to calculate a required quantity from given measurements of a second quantity that is associated to the first one. Besides medical imaging and non-destructive testing, inverse problems also play an increasing role in other disciplines such as industrial and financial mathematics. Hence, there is a need for stable and efficient solvers. The book is concerned with the method of approximate inverse which is a regularization technique for stably solving inverse problems in various settings such as L2-spaces, Hilbert spaces or spaces of distributions. The performance and functionality of the method is demonstrated on several examples from medical imaging and non-destructive testing such as computerized tomography, Doppler tomography, SONAR, X-ray diffractometry and thermoacoustic computerized tomography. The book addresses graduate students and researchers interested in the numerical analysis of inverse problems and regularization techniques or in efficient solvers for the applications mentioned above.Lecture notes in mathematics (Springer-Verlag) ;1906.Inverse problems (Differential equations)TomographyInverse problems (Differential equations)Tomography.515.35731.76bclMAT 150fstubMED 385fstubPHY 013fstubSI 850rvkSchuster Thomas1971-1162550MiAaPQMiAaPQMiAaPQBOOK9910484051003321The method of approximate inverse2830753UNINA