NFFT
3.4.1
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Macros | |
#define | LANDWEBER (1U<< 0) |
#define | STEEPEST_DESCENT (1U<< 1) |
#define | CGNR (1U<< 2) |
#define | CGNE (1U<< 3) |
#define | NORMS_FOR_LANDWEBER (1U<< 4) |
#define | PRECOMPUTE_WEIGHT (1U<< 5) |
#define | PRECOMPUTE_DAMP (1U<< 6) |
#define LANDWEBER (1U<< 0) |
#define STEEPEST_DESCENT (1U<< 1) |
#define CGNR (1U<< 2) |
If this flag is set, the conjugate gradient method for the normal equation of first kind is used to compute an inverse transform. Each iterate minimises the residual in the current Krylov subspace.
Definition at line 788 of file nfft3.h.
Referenced by CONCAT(), inverse_linogram_fft(), inverse_mpolar_fft(), inverse_polar_fft(), inverse_radon_trafo(), main(), and reconstruct().
#define CGNE (1U<< 3) |
#define NORMS_FOR_LANDWEBER (1U<< 4) |
If this flag is set, the Landweber iteration updates the member dot_r_iter.
Definition at line 790 of file nfft3.h.
Referenced by solver_loop_one_step_landweber_complex(), and solver_loop_one_step_landweber_double().
#define PRECOMPUTE_WEIGHT (1U<< 5) |
If this flag is set, the samples are weighted, eg to cope with varying sampling density.
Definition at line 791 of file nfft3.h.
Referenced by CONCAT(), inverse_linogram_fft(), inverse_mpolar_fft(), inverse_polar_fft(), inverse_radon_trafo(), main(), reconstruct(), solver_loop_one_step_cgne_complex(), solver_loop_one_step_cgne_double(), solver_loop_one_step_cgnr_complex(), solver_loop_one_step_cgnr_double(), solver_loop_one_step_landweber_complex(), solver_loop_one_step_landweber_double(), solver_loop_one_step_steepest_descent_complex(), and solver_loop_one_step_steepest_descent_double().
#define PRECOMPUTE_DAMP (1U<< 6) |
If this flag is set, the Fourier coefficients are damped, eg to favour fast decaying coefficients.
Definition at line 792 of file nfft3.h.
Referenced by CONCAT(), glacier(), glacier_cv(), inverse_linogram_fft(), inverse_mpolar_fft(), inverse_polar_fft(), main(), reconstruct(), solver_loop_one_step_cgne_complex(), solver_loop_one_step_cgne_double(), solver_loop_one_step_cgnr_complex(), solver_loop_one_step_cgnr_double(), solver_loop_one_step_landweber_complex(), solver_loop_one_step_landweber_double(), solver_loop_one_step_steepest_descent_complex(), and solver_loop_one_step_steepest_descent_double().