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Commit 03cc7f7e authored by Jakob Knollmueller's avatar Jakob Knollmueller
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added some distribution_strategy's for mpirun, fixed some errors in WienerFilterEnergy

parent 67a98fe9
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demos/wiener_filter_via_hamiltonian.py
View file @ 03cc7f7e
......@@ -10,73 +10,78 @@ rank = comm.rank
np.random.seed(42)
class AdjointFFTResponse(LinearOperator):
def __init__(self, FFT, R, default_spaces=None):
super(AdjointFFTResponse, self).__init__(default_spaces)
self._domain = FFT.target
self._target = R.target
self.R = R
self.FFT = FFT
def _times(self, x, spaces=None):
return self.R(self.FFT.adjoint_times(x))
def _adjoint_times(self, x, spaces=None):
return self.FFT(self.R.adjoint_times(x))
@property
def domain(self):
return self._domain
@property
def target(self):
return self._target
@property
def unitary(self):
return False
# class AdjointFFTResponse(LinearOperator):
# def __init__(self, FFT, R, default_spaces=None):
# super(AdjointFFTResponse, self).__init__(default_spaces)
# self._domain = FFT.target
# self._target = R.target
# self.R = R
# self.FFT = FFT
#
# def _times(self, x, spaces=None):
# return self.R(self.FFT.adjoint_times(x))
#
# def _adjoint_times(self, x, spaces=None):
# return self.FFT(self.R.adjoint_times(x))
# @property
# def domain(self):
# return self._domain
#
# @property
# def target(self):
# return self._target
#
# @property
# def unitary(self):
# return False
#
if __name__ == "__main__":
distribution_strategy = 'not'
distribution_strategy = 'equal'
# Set up position space
s_space = RGSpace([128,128])
signal_space = RGSpace([256,256])
# s_space = HPSpace(32)
harmonic_space = FFTOperator.get_default_codomain(signal_space)
fft = FFTOperator(harmonic_space, target=signal_space,
domain_dtype=np.complex, target_dtype=np.float)
# Define harmonic transformation and associated harmonic space
fft = FFTOperator(s_space)
h_space = fft.target[0]
# Setting up power space
p_space = PowerSpace(h_space, distribution_strategy=distribution_strategy)
power_space = PowerSpace(harmonic_space,
distribution_strategy=distribution_strategy)
# Choosing the prior correlation structure and defining correlation operator
p_spec = (lambda k: (42 / (k + 1) ** 3))
power_spectrum = (lambda k: (42 / (k + 1) ** 3))
S = create_power_operator(h_space, power_spectrum=p_spec,
S = create_power_operator(harmonic_space, power_spectrum=power_spectrum,
distribution_strategy=distribution_strategy)
# Drawing a sample sh from the prior distribution in harmonic space
sp = Field(p_space, val=p_spec,
sp = Field(power_space, val=power_spectrum,
distribution_strategy=distribution_strategy)
sh = sp.power_synthesize(real_signal=True)
ss = fft.adjoint_times(sh)
ss = fft(sh)
# Choosing the measurement instrument
# Instrument = SmoothingOperator(s_space, sigma=0.05)
Instrument = DiagonalOperator(s_space, diagonal=1.)
# Instrument._diagonal.val[200:400, 200:400] = 0
mask = Field(signal_space, val=1,
distribution_strategy=distribution_strategy)
mask.val[63:127, 63:127] = 0.
Instrument = DiagonalOperator(signal_space, diagonal=mask)
#Adding a harmonic transformation to the instrument
R = AdjointFFTResponse(fft, Instrument)
R = ComposedOperator([fft, Instrument], default_spaces=[0, 0])
signal_to_noise = 1.
N = DiagonalOperator(s_space, diagonal=ss.var()/signal_to_noise, bare=True)
n = Field.from_random(domain=s_space,
N = DiagonalOperator(signal_space, diagonal=ss.var()/signal_to_noise,
bare=True,
distribution_strategy=distribution_strategy)
n = Field.from_random(domain=signal_space,
random_type='normal',
std=ss.std()/np.sqrt(signal_to_noise),
mean=0)
mean=0, distribution_strategy=distribution_strategy)
# Creating the mock data
d = R(sh) + n
......@@ -95,34 +100,50 @@ if __name__ == "__main__":
minimizer = RelaxedNewton(convergence_tolerance=0,
iteration_limit=1,
callback=convergence_measure)
#
# minimizer = VL_BFGS(convergence_tolerance=0,
# iteration_limit=50,
# callback=convergence_measure,
# max_history_length=3)
#
minimizer = VL_BFGS(convergence_tolerance=0,
iteration_limit=500,
callback=convergence_measure,
max_history_length=3)
inverter = ConjugateGradient(convergence_level=3,
convergence_tolerance=1e-5,
preconditioner=None)
# Setting starting position
m0 = Field(h_space, val=.0)
m0 = Field(harmonic_space, val=.0,
distribution_strategy=distribution_strategy)
# Initializing the Wiener Filter energy
energy = WienerFilterEnergy(position=m0, d=d, R=R, N=N, S=S, inverter=inverter)
energy = WienerFilterEnergy(position=m0, d=d, R=R, N=N, S=S,
inverter=inverter)
D0 = energy.curvature
# Solving the problem analytically
m0 = D0.inverse_times(j)
sample_variance = Field(sh.domain,val=0. + 0j)
sample_mean = Field(sh.domain,val=0. + 0j)
# sampling the uncertainty map
n_samples = 1
for i in range(n_samples):
sample = sugar.generate_posterior_sample(m0,D0)
sample_variance += sample**2
sample_mean += sample
variance = sample_variance/n_samples - (sample_mean/n_samples)
# solution, convergence = minimizer(energy)
# m0 = solution.position
m0_s = Field(signal_space,val=fft(m0).val.get_full_data().real)
plotter = plotting.RG2DPlotter()
plotter.title = 'mock_signal.html';
plotter(ss)
plotter.title = 'data.html'
plotter(Field(signal_space,
val=Instrument.adjoint_times(d).val.get_full_data()\
.reshape(signal_space.shape)))
plotter.title = 'map.html'; plotter(m0_s)
#
# sample_variance = Field(sh.domain,val=0. + 0j,
# distribution_strategy=distribution_strategy)
# sample_mean = Field(sh.domain,val=0. + 0j,
# distribution_strategy=distribution_strategy)
#
# # sampling the uncertainty map
# n_samples = 1
# for i in range(n_samples):
# sample = sugar.generate_posterior_sample(m0,D0)
# sample_variance += sample**2
# sample_mean += sample
# variance = sample_variance/n_samples - (sample_mean/n_samples)**2
nifty/library/wiener_filter/wiener_filter_energy.py
View file @ 03cc7f7e
......@@ -29,7 +29,7 @@ class WienerFilterEnergy(Energy):
self.R = R
self.N = N
self.S = S
self.inverter = inverter
def at(self, position):
return self.__class__(position=position, d=self.d, R=self.R, N=self.N,
S=self.S, inverter=self.inverter)
......@@ -47,8 +47,9 @@ class WienerFilterEnergy(Energy):
@property
@memo
def curvature(self):
return WienerFilterCurvature(R=self.R, N=self.N, S=self.S)
return WienerFilterCurvature(R=self.R, N=self.N, S=self.S,
inverter=self.inverter)
@property
@memo
def _Dx(self):
return self.curvature(self.position)
......
nifty/operators/invertible_operator_mixin/invertible_operator_mixin.py
View file @ 03cc7f7e
......@@ -71,7 +71,8 @@ class InvertibleOperatorMixin(object):
def _times(self, x, spaces, x0=None):
if x0 is None:
x0 = Field(self.target, val=0., dtype=x.dtype)
x0 = Field(self.target, val=0., dtype=x.dtype,
distribution_strategy=x.distribution_strategy)
(result, convergence) = self.__inverter(A=self.inverse_times,
b=x,
......@@ -80,7 +81,8 @@ class InvertibleOperatorMixin(object):
def _adjoint_times(self, x, spaces, x0=None):
if x0 is None:
x0 = Field(self.domain, val=0., dtype=x.dtype)
x0 = Field(self.domain, val=0., dtype=x.dtype,
distribution_strategy=x.distribution_strategy)
(result, convergence) = self.__inverter(A=self.adjoint_inverse_times,
b=x,
......@@ -89,7 +91,8 @@ class InvertibleOperatorMixin(object):
def _inverse_times(self, x, spaces, x0=None):
if x0 is None:
x0 = Field(self.domain, val=0., dtype=x.dtype)
x0 = Field(self.domain, val=0., dtype=x.dtype,
distribution_strategy=x.distribution_strategy)
(result, convergence) = self.__inverter(A=self.times,
b=x,
......@@ -98,7 +101,8 @@ class InvertibleOperatorMixin(object):
def _adjoint_inverse_times(self, x, spaces, x0=None):
if x0 is None:
x0 = Field(self.target, val=0., dtype=x.dtype)
x0 = Field(self.target, val=0., dtype=x.dtype,
distribution_strategy=x.distribution_strategy)
(result, convergence) = self.__inverter(A=self.adjoint_times,
b=x,
......
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