This is a graduate textbook on the principles of linear inverse problems, methods of their approximate solution, and practical application in imaging. The level of mathematical treatment is kept as low as possible to make the book suitable for a wide range of readers from different backgrounds in science and engineering. Mathematical prerequisites are first courses in analysis, geometry, linear algebra, probability theory, and Fourier analysis. The authors concentrate on presenting easily implementable and fast solution algorithms. With examples and exercised throughout, the book will provide the reader with the appropriate background for a clear understanding of the essence of inverse problems (ill-posedness and its cure) and, consequently, for an intelligent assessment of the rapidly growing literature on these problems.
INTRODUCTION What is an inverse problem? What is an ll-posed problem? How to cure ill-posedness An outline of the book Reference IMAGE DECONVOLUTION SOME MATHEMATICAL TOOLS The Fourier transform (FT) Bandlimited functions and sampling theorems Convolution operators The discrete Fourier transform (DFT) Cyclic matrices Relationship between FT and DFT Discretization of the convolution product References EXAMPLES OF IMAGE BLURRING Blurring and noise Linear motion blur Out-of-focus blur Diffraction-limited imaging systems Atmospheric turbulence blur Near-field acoustic holography References THE ILL-POSEDNESS OF IMAGE DECONVOLUTION Formulation of the problem Well-posed and ill-posed problems Existence of the solution and inverse filtering Discretization: from ill-posedness to ill-conditioning Bandlimited systems: least-squares solutions and generalized solution Approximate solutions and the use of a priori information Constrained least-squares References REGULARIZATION METHODS Least squares solutions with prescribed energy Approximate solutions with minimal energy Regularization algorithms in the sense of Tikhonov Regularization and filtering The global point spread function Choice of the regularization parameter References ITERATIVE REGULARIZATION METHODS The Landweber method The projected Landweber method for the computation of constrained regularized solutions The steepest descent and the conjugate gradient method References STATISTICAL METHODS Maximum likelihood (ML) methods The ML method in the case of Gaussian noise The ML method in the case of Poisson noise Bayesian methods The Wiener filter References LINEAR INVERSE IMAGING PROBLEMS EXAMPLES OF LINEAR INVERSE PROBLEMS Space-variant imaging systems X-ray tomography Emission tomography Inverse diffraction and inverse source problems Linearized inverse scattering problems References SINGULAR VALUE DECOMPOSITION (SVD) Mathematical description of linear imaging systems SVD of a matrix SVD of a semi-discrete mapping SVD of an integral operator with square-integrable kernel SVD of the Radon transform References INVERSION METHODS REVISITED The generalized solution The Tikhonov regularization method Truncated SVD Iterative regularization methods Statistical methods References FOURIER-BASED METHODS FOR SPECIFIC PROBLEMS The Fourier slice theorem in tomography The filtered backprojection (FBP) method in tomography Implementation of the discrete FBP Resolution and super-resolution in image restoration Out-of-band extrapolation The Gerchberg method and its generalization References COMMENTS AND CONCLUDING REMARKS Does there exist a general-purpose method? In praise of simulation References MATHEMATICAL APPENDICES Euclidean and Hilbert spaces of functions Linear operators in function spaces Euclidean vector spaces and matrices Properties of the DFT and the FFT algorithm Minimization of quadratic functionals Contraction and non-expansive mappings The EM method References
Number Of Pages:
- ID: 9780750304351
- Saver Delivery: Yes
- 1st Class Delivery: Yes
- Courier Delivery: Yes
- Store Delivery: Yes
Prices are for internet purchases only. Prices and availability in WHSmith Stores may vary significantly
© Copyright 2013 - 2016 WHSmith and its suppliers.
WHSmith High Street Limited Greenbridge Road, Swindon, Wiltshire, United Kingdom, SN3 3LD, VAT GB238 5548 36