Commit 8a2bb053 authored by alexander.dornheim's avatar alexander.dornheim
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Added Siemens_amplitude_in, not yet working

parent eb0c791b
# Siemens_amplitude_in
# written on October 6, 2011 by
# Russell Luke
# University of Goettingen
#
# DESCRIPTION: parameter input file for main_dvr.m
#
##########################################################################
## This is the input file that the user sees/modifies. It should be simple,
## avoid jargon or acronyms, and should be a model for a menu-driven GUI
new_config = {
## We start very general.
## What type of problem is being solved? Classification
## is according to the geometry: Affine, Cone, Convex,
## Phase, Affine-sparsity, Nonlinear-sparsity, Sudoku
'problem_family' : 'Phase',
##==========================================
## Problem parameters
##==========================================
## What is the name of the data file?
'data_filename' : 'Siemens_processor',
## What type of object are we working with?
## Options are: 'phase', 'real', 'nonnegative', 'complex'
'object' : 'complex',
## What type of constraints do we have?
## Options are: 'support only', 'real and support', 'nonnegative and support',
## 'amplitude only', 'minimum amplitude', 'sparse real', 'sparse complex', and 'hybrid'
'constraint' : 'amplitude only',
## What type of measurements are we working with?
## Options are: 'single diffraction', 'diversity diffraction',
## 'ptychography', and 'complex'
'experiment' : 'single diffraction',
## Next we move to things that most of our users will know
## better than we will. Some of these may be overwritten in the
## data processor file which the user will most likely write.
## Are the measurements in the far field or near field?
## Options are: 'far field' or 'near field',
'distance' : 'far field',
## What are the dimensions of the measurements?
'Nx' : 1024,
'Ny' : 1024,
'Nz':1, # only 2 dimensional arrays
## What are the noise characteristics (Poisson or Gaussian or none)?
'noise':'Gaussian',
##==========================================
## Algorithm parameters
##==========================================
## Now set some algorithm parameters that the user should be
## able to control (without too much damage)
## Algorithm:
'algortihm' : 'RAAR',#'RAAR', 'AP',
'numruns':1, # the only time this parameter will
# be different than 1 is when we are
# benchmarking...not something a normal user
# would be doing.
## The following are parameters specific to RAAR, HPR, and HAAR that the
## user should be able to set/modify. Surely
## there will be other algorithm specific parameters that a user might
## want to play with. Don't know how best
## to do this. Thinking of a GUI interface, we could hard code all the
## parameters the user might encounter and have the menu options change
## depending on the value of the method field.
## do different things depending on the chosen algorithm:
## maximum number of iterations and tolerances
'MAXIT' : 500,
'TOL' : 1e-6,
## relaxaton parameters in RAAR, HPR and HAAR
'beta_0' : 1.0, # starting relaxation prameter (only used with
# HAAR, HPR and RAAR)
'beta_max' :0.5, # maximum relaxation prameter (only used with
# HAAR, RAAR, and HPR)
'beta_switch' : 50, # iteration at which beta moves from beta_0 -> beta_max
## parameter for the data regularization
## need to discuss how/whether the user should
## put in information about the noise
'data_ball' : 0.1,
# the above is the percentage of the gap
# between the measured data and the
# initial guess satisfying the
# qualitative constraints. For a number
# very close to one, the gap is not expected
# to improve much. For a number closer to 0
# the gap is expected to improve a lot.
# Ultimately the size of the gap depends
# on the inconsistency of the measurement model
# with the qualitative constraints.
##==========================================
## parameters for plotting and diagnostics
##==========================================
'verbose' : 1, # options are 0 or 1
'graphics' : 1, # whether or not to display figures, options are 0 or 1.
# default is 1.
'anim' : 1, # whether or not to disaply ``real time" reconstructions
# options are 0=no, 1=yes, 2=make a movie
# default is 1.
'graphics_display' : 'Phase_graphics', # unless specified, a default
# plotting subroutine will generate
# the graphics. Otherwise, the user
# can write their own plotting subroutine
##======================================================================
## Technical/software specific parameters
##======================================================================
## Given the parameter values above, the following technical/algorithmic
## parameters are automatically set. The user does not need to know
## about these details, and so probably these parameters should be set in
## a module one level below this one.
}
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