siddharth-maddali / phaser Goto Github PK
View Code? Open in Web Editor NEWBCDI phase retrieval module written in Python 3.x. GPU implementation done using Tensorflow 2.1, with an older library available that uses Tensorflow 1.x.
BCDI phase retrieval module written in Python 3.x. GPU implementation done using Tensorflow 2.1, with an older library available that uses Tensorflow 1.x.
I think there might be a bug in one of the post processing functions: specifically, in the line
y, x, z = np.meshgrid(
np.arange( supC.shape[0] ),
np.arange( supC.shape[1] ),
np.arange( supC.shape[2] )
)
in the function centerObject in the PostProcessing.py module. Later lines were giving me a shape mismatch between x
,y
,z
and supC
; it looks like the default inputs for np.meshgrid ('xy' indexing) give a matrix with a shape whose first dimension corresponds to the second vector input and whose second dimension corresponds to the first vector input. So it seems like the line should be
y, x, z = np.meshgrid(
np.arange( supC.shape[1] ),
np.arange( supC.shape[0] ),
np.arange( supC.shape[2] )
)
or, alternatively, one could set indexing='ij'
as a parameter in the meshgrid function.
(And the shape mismatch errors do go away after I make this change.)
It looks like the HIO function doesn't update the modulus before updating the error; leading to a static error output during HIO iterations. Should have something like
def HIO(...):
...
self._UpdateHIOStep()
self._UpdateMod()
self._UpdateError()
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