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# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2004-2018 European Synchrotron Radiation Facility
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# ###########################################################################*/
"""
:mod:`silx.gui.plot.actions.medfilt` provides a set of QAction to apply filter
on data contained in a :class:`.PlotWidget`.
The following QAction are available:
- :class:`MedianFilterAction`
- :class:`MedianFilter1DAction`
- :class:`MedianFilter2DAction`
"""
from __future__ import division
__authors__ = ["V.A. Sole", "T. Vincent", "P. Knobel"]
__license__ = "MIT"
__date__ = "03/01/2018"
from . import PlotAction
from silx.gui.widgets.MedianFilterDialog import MedianFilterDialog
from silx.math.medianfilter import medfilt2d
import logging
_logger = logging.getLogger(__name__)
class MedianFilterAction(PlotAction):
"""QAction to plot the pixels intensities diagram
:param plot: :class:`.PlotWidget` instance on which to operate
:param parent: See :class:`QAction`
"""
def __init__(self, plot, parent=None):
PlotAction.__init__(self,
plot,
icon='median-filter',
text='median filter',
tooltip='Apply a median filter on the image',
triggered=self._triggered,
parent=parent)
self._originalImage = None
self._legend = None
self._filteredImage = None
self._popup = MedianFilterDialog(parent=plot)
self._popup.sigFilterOptChanged.connect(self._updateFilter)
self.plot.sigActiveImageChanged.connect(self._updateActiveImage)
self._updateActiveImage()
def _triggered(self, checked):
"""Update the plot of the histogram visibility status
:param bool checked: status of the action button
"""
self._popup.show()
def _updateActiveImage(self):
"""Set _activeImageLegend and _originalImage from the active image"""
self._activeImageLegend = self.plot.getActiveImage(just_legend=True)
if self._activeImageLegend is None:
self._originalImage = None
self._legend = None
else:
self._originalImage = self.plot.getImage(self._activeImageLegend).getData(copy=False)
self._legend = self.plot.getImage(self._activeImageLegend).getLegend()
def _updateFilter(self, kernelWidth, conditional=False):
if self._originalImage is None:
return
self.plot.sigActiveImageChanged.disconnect(self._updateActiveImage)
filteredImage = self._computeFilteredImage(kernelWidth, conditional)
self.plot.addImage(data=filteredImage,
legend=self._legend,
replace=True)
self.plot.sigActiveImageChanged.connect(self._updateActiveImage)
def _computeFilteredImage(self, kernelWidth, conditional):
raise NotImplementedError('MedianFilterAction is a an abstract class')
def getFilteredImage(self):
"""
:return: the image with the median filter apply on"""
return self._filteredImage
class MedianFilter1DAction(MedianFilterAction):
"""Define the MedianFilterAction for 1D
:param plot: :class:`.PlotWidget` instance on which to operate
:param parent: See :class:`QAction`
"""
def __init__(self, plot, parent=None):
MedianFilterAction.__init__(self,
plot,
parent=parent)
def _computeFilteredImage(self, kernelWidth, conditional):
assert(self.plot is not None)
return medfilt2d(self._originalImage,
(kernelWidth, 1),
conditional)
class MedianFilter2DAction(MedianFilterAction):
"""Define the MedianFilterAction for 2D
:param plot: :class:`.PlotWidget` instance on which to operate
:param parent: See :class:`QAction`
"""
def __init__(self, plot, parent=None):
MedianFilterAction.__init__(self,
plot,
parent=parent)
def _computeFilteredImage(self, kernelWidth, conditional):
assert(self.plot is not None)
return medfilt2d(self._originalImage,
(kernelWidth, kernelWidth),
conditional)
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