def _create_grayscale_layer_from_slot(cls, slot, n_channels):
source = LazyflowSource(slot)
layer = GrayscaleLayer(source)
layer.numberOfChannels = n_channels
layer.set_range(0, slot.meta.drange)
normalize = cls._should_normalize_display(slot)
layer.set_normalize(0, normalize)
return layer
def _create_grayscale_layer_from_slot(cls, slot, n_channels):
source = LazyflowSource(slot)
layer = GrayscaleLayer(source)
layer.numberOfChannels = n_channels
layer.set_range(0, slot.meta.drange)
normalize = cls._should_normalize_display(slot)
layer.set_normalize( 0, normalize )
return layer
def _create_grayscale_layer_from_slot(cls, slot, n_channels):
# FIXME: move all of this stuff into the class constructor. Same for all
# _create_*layer_from_slot methods.
source = createDataSource(slot)
layer = GrayscaleLayer(source, window_leveling=True)
layer.numberOfChannels = n_channels
layer.set_normalize(0, (slot.meta.normalizeDisplay and slot.meta.drange) or None)
return layer
def _create_grayscale_layer_from_slot(cls, slot, n_channels):
#FIXME: move all of this stuff into the class constructor. Same for all
# _create_*layer_from_slot methods.
source = LazyflowSource(slot)
layer = GrayscaleLayer(source, window_leveling=True)
layer.numberOfChannels = n_channels
layer.set_range(0, slot.meta.drange)
normalize = cls._should_normalize_display(slot)
layer.set_normalize( 0, normalize )
return layer
def _create_grayscale_layer_from_slot(cls, slot, n_channels):
#FIXME: move all of this stuff into the class constructor. Same for all
# _create_*layer_from_slot methods.
source = LazyflowSource(slot)
layer = GrayscaleLayer(source, window_leveling=True)
layer.numberOfChannels = n_channels
layer.set_range(0, slot.meta.drange)
normalize = cls._should_normalize_display(slot)
layer.set_normalize(0, normalize)
return layer
def createStandardLayerFromSlot(cls, slot, lastChannelIsAlpha=False):
"""
Convenience function.
Generates a volumina layer using the given slot.
Chooses between grayscale or RGB depending on the number of channels in the slot.
* If *slot* has 1 channel or more than 4 channels, a GrayscaleLayer is created.
* If *slot* has 2 non-alpha channels, an RGBALayer is created with R and G channels.
* If *slot* has 3 non-alpha channels, an RGBALayer is created with R,G, and B channels.
* If *slot* has 4 channels, an RGBA layer is created
:param slot: The slot to generate a layer from
:param lastChannelIsAlpha: If True, the last channel in the slot is assumed to be an alpha channel.
If slot has 4 channels, this parameter has no effect.
"""
def getRange(meta):
if meta.drange is not None and meta.normalizeDisplay is False:
# do not normalize if the user provided a range and set normalization to False
return meta.drange
else:
# If we don't know the range of the data and normalization is allowed
# by the user, create a layer that is auto-normalized.
# See volumina.pixelpipeline.datasources for details.
#
# Even in the case of integer data, which has more than 255 possible values,
# (like uint16), it seems reasonable to use this setting as default
return None # means autoNormalize
shape = slot.meta.shape
try:
channelAxisIndex = slot.meta.axistags.index('c')
#assert channelAxisIndex < len(slot.meta.axistags), \
# "slot %s has shape = %r, axistags = %r, but no channel dimension" \
# % (slot.name, slot.meta.shape, slot.meta.axistags)
numChannels = shape[channelAxisIndex]
axisinfo = slot.meta.axistags["c"].description
except:
numChannels = 1
axisinfo = "" # == no info on channels given
rindex = None
bindex = None
gindex = None
aindex = None
if axisinfo == "" or axisinfo == "default":
# Examine channel dimension to determine Grayscale vs. RGB
if numChannels == 4:
lastChannelIsAlpha = True
if lastChannelIsAlpha:
assert numChannels <= 4, "Can't display a standard layer with more than four channels (with alpha). Your image has {} channels.".format(numChannels)
if numChannels == 1 or (numChannels > 4):
assert not lastChannelIsAlpha, "Can't have an alpha channel if there is no color channel"
source = LazyflowSource(slot)
layer = GrayscaleLayer(source)
layer.numberOfChannels = numChannels
normalize = getRange(slot.meta)
layer.set_normalize(0,normalize)
return layer
assert numChannels > 2 or (numChannels == 2 and not lastChannelIsAlpha), \
"Unhandled combination of channels. numChannels={}, lastChannelIsAlpha={}, axistags={}".format( numChannels, lastChannelIsAlpha, slot.meta.axistags )
rindex = 0
gindex = 1
if numChannels > 3 or (numChannels == 3 and not lastChannelIsAlpha):
bindex = 2
if lastChannelIsAlpha:
aindex = numChannels-1
elif axisinfo == "grayscale":
source = LazyflowSource(slot)
layer = GrayscaleLayer(source)
layer.numberOfChannels = numChannels
normalize = getRange(slot.meta)
layer.set_normalize(0,normalize)
return layer
elif axisinfo == "rgba":
rindex = 0
if numChannels>=2:
gindex = 1
if numChannels>=3:
bindex = 2
if numChannels>=4:
aindex = numChannels-1
else:
raise RuntimeError("unknown channel display mode")
redSource = None
if rindex is not None:
redProvider = OpSingleChannelSelector(parent=slot.getRealOperator().parent)
redProvider.Input.connect(slot)
redProvider.Index.setValue( rindex )
redSource = LazyflowSource( redProvider.Output )
greenSource = None
if gindex is not None:
greenProvider = OpSingleChannelSelector(parent=slot.getRealOperator().parent)
greenProvider.Input.connect(slot)
greenProvider.Index.setValue( gindex )
greenSource = LazyflowSource( greenProvider.Output )
blueSource = None
if bindex is not None:
blueProvider = OpSingleChannelSelector(parent=slot.getRealOperator().parent)
blueProvider.Input.connect(slot)
blueProvider.Index.setValue( bindex )
blueSource = LazyflowSource( blueProvider.Output )
alphaSource = None
if aindex is not None:
alphaProvider = OpSingleChannelSelector(parent=slot.getRealOperator().parent)
alphaProvider.Input.connect(slot)
alphaProvider.Index.setValue( aindex )
alphaSource = LazyflowSource( alphaProvider.Output )
layer = RGBALayer( red=redSource, green=greenSource, blue=blueSource, alpha=alphaSource)
normalize = getRange(slot.meta)
print "createLayer normalize", normalize
for i in xrange(4):
if [redSource,greenSource,blueSource,alphaSource][i]:
layer.set_normalize(i,normalize)
return layer
def createStandardLayerFromSlot(cls, slot, lastChannelIsAlpha=False):
"""
Convenience function.
Generates a volumina layer using the given slot.
Chooses between grayscale or RGB depending on the number of channels in the slot.
* If *slot* has 1 channel or more than 4 channels, a GrayscaleLayer is created.
* If *slot* has 2 non-alpha channels, an RGBALayer is created with R and G channels.
* If *slot* has 3 non-alpha channels, an RGBALayer is created with R,G, and B channels.
* If *slot* has 4 channels, an RGBA layer is created
:param slot: The slot to generate a layer from
:param lastChannelIsAlpha: If True, the last channel in the slot is assumed to be an alpha channel.
If slot has 4 channels, this parameter has no effect.
"""
def getRange(meta):
return meta.drange
def getNormalize(meta):
if meta.drange is not None and meta.normalizeDisplay is False:
# do not normalize if the user provided a range and set normalization to False
return False
else:
# If we don't know the range of the data and normalization is allowed
# by the user, create a layer that is auto-normalized.
# See volumina.pixelpipeline.datasources for details.
#
# Even in the case of integer data, which has more than 255 possible values,
# (like uint16), it seems reasonable to use this setting as default
return None # means autoNormalize
shape = slot.meta.shape
try:
channelAxisIndex = slot.meta.axistags.index('c')
#assert channelAxisIndex < len(slot.meta.axistags), \
# "slot %s has shape = %r, axistags = %r, but no channel dimension" \
# % (slot.name, slot.meta.shape, slot.meta.axistags)
numChannels = shape[channelAxisIndex]
axisinfo = slot.meta.axistags["c"].description
except:
numChannels = 1
axisinfo = "" # == no info on channels given
rindex = None
bindex = None
gindex = None
aindex = None
if axisinfo == "" or axisinfo == "default":
# Examine channel dimension to determine Grayscale vs. RGB
if numChannels == 4:
lastChannelIsAlpha = True
if lastChannelIsAlpha:
assert numChannels <= 4, "Can't display a standard layer with more than four channels (with alpha). Your image has {} channels.".format(
numChannels)
if numChannels == 1 or (numChannels > 4):
assert not lastChannelIsAlpha, "Can't have an alpha channel if there is no color channel"
source = LazyflowSource(slot)
layer = GrayscaleLayer(source)
layer.numberOfChannels = numChannels
normalize = getNormalize(slot.meta)
range = getRange(slot.meta)
layer.set_range(0, range)
layer.set_normalize(0, normalize)
return layer
assert numChannels > 2 or (numChannels == 2 and not lastChannelIsAlpha), \
"Unhandled combination of channels. numChannels={}, lastChannelIsAlpha={}, axistags={}".format( numChannels, lastChannelIsAlpha, slot.meta.axistags )
rindex = 0
gindex = 1
if numChannels > 3 or (numChannels == 3
and not lastChannelIsAlpha):
bindex = 2
if lastChannelIsAlpha:
aindex = numChannels - 1
elif axisinfo == "grayscale":
source = LazyflowSource(slot)
layer = GrayscaleLayer(source)
layer.numberOfChannels = numChannels
normalize = getNormalize(slot.meta)
range = getRange(slot.meta)
layer.set_range(0, range)
layer.set_normalize(0, normalize)
return layer
elif axisinfo == "rgba":
rindex = 0
if numChannels >= 2:
gindex = 1
if numChannels >= 3:
bindex = 2
if numChannels >= 4:
aindex = numChannels - 1
else:
raise RuntimeError("unknown channel display mode")
redSource = None
if rindex is not None:
redProvider = OpSingleChannelSelector(
parent=slot.getRealOperator().parent)
redProvider.Input.connect(slot)
redProvider.Index.setValue(rindex)
redSource = LazyflowSource(redProvider.Output)
redSource.additional_owned_ops.append(redProvider)
greenSource = None
if gindex is not None:
greenProvider = OpSingleChannelSelector(
parent=slot.getRealOperator().parent)
greenProvider.Input.connect(slot)
greenProvider.Index.setValue(gindex)
greenSource = LazyflowSource(greenProvider.Output)
greenSource.additional_owned_ops.append(greenProvider)
blueSource = None
if bindex is not None:
blueProvider = OpSingleChannelSelector(
parent=slot.getRealOperator().parent)
blueProvider.Input.connect(slot)
blueProvider.Index.setValue(bindex)
blueSource = LazyflowSource(blueProvider.Output)
blueSource.additional_owned_ops.append(blueProvider)
alphaSource = None
if aindex is not None:
alphaProvider = OpSingleChannelSelector(
parent=slot.getRealOperator().parent)
alphaProvider.Input.connect(slot)
alphaProvider.Index.setValue(aindex)
alphaSource = LazyflowSource(alphaProvider.Output)
alphaSource.additional_owned_ops.append(alphaProvider)
layer = RGBALayer(red=redSource,
green=greenSource,
blue=blueSource,
alpha=alphaSource)
normalize = getNormalize(slot.meta)
range = getRange(slot.meta)
for i in xrange(4):
if [redSource, greenSource, blueSource, alphaSource][i]:
layer.set_range(i, range)
layer.set_normalize(i, normalize)
return layer
