def test(self):
g = lazyflow.graph.Graph()
op = OpMetadataInjector(graph=g)
additionalMetadata = {"layertype": 7}
op.Metadata.setValue(additionalMetadata)
op.Input.setValue("Hello")
# Output value should match input value
assert op.Output.value == op.Input.value
# Make sure all input metadata was copied to the output
assert all(((k, v) in list(op.Output.meta.items()))
for k, v in list(op.Input.meta.items()))
# Check that the additional metadata was added to the output
assert op.Output.meta.layertype == 7
# Make sure dirtyness gets propagated to the output.
dirtyList = []
def handleDirty(*args):
dirtyList.append(True)
op.Output.notifyDirty(handleDirty)
op.Input.setValue(8)
assert len(dirtyList) == 1
def setupOutputs(self):
if self._opReader is not None:
self.Output.disconnect()
if self._opMetadataInjector:
self._opMetadataInjector.cleanUp()
self._opMetadataInjector = None
self._opReader.cleanUp()
self._opReader = None
try:
# Configure the reader
dataReady = True
self._opReader = OpInputDataReader(parent=self)
self._opReader.WorkingDirectory.setValue(
self.WorkingDirectory.value)
self._opReader.FilePath.setValue(self.DatasetPath.value)
# Since most file formats don't save meta-info,
# The reader output's axis order may be incorrect.
# (For example, if we export in npy format with zxy order,
# the Npy reader op will simply assume xyz order when it reads the data.)
# Force the metadata back to the correct state by copying select items from Input.meta
metadata = {}
metadata['axistags'] = self.Input.meta.axistags
metadata['drange'] = self.Input.meta.drange
metadata['display_mode'] = self.Input.meta.display_mode
self._opMetadataInjector = OpMetadataInjector(parent=self)
self._opMetadataInjector.Input.connect(self._opReader.Output)
self._opMetadataInjector.Metadata.setValue(metadata)
dataReady &= self._opMetadataInjector.Output.meta.shape == self.Input.meta.shape
dataReady &= self._opMetadataInjector.Output.meta.dtype == self.Input.meta.dtype
if dataReady:
self.Output.connect(self._opMetadataInjector.Output)
else:
self._opMetadataInjector.cleanUp()
self._opMetadataInjector = None
self._opReader.cleanUp()
self._opReader = None
self.Output.meta.NOTREADY = True
#except OpInputDataReader.DatasetReadError:
except Exception as ex:
#logger.debug( "On-disk image can't be read: {}".format(ex) )
# Note: If the data is exported as a 'sequence', then this will always be NOTREADY
# because the 'path' (e.g. 'myfile_{slice_index}.png' will be nonexistent.
# That's okay because a stack is probably too slow to be of use for a preview anyway.
if self._opMetadataInjector:
self._opMetadataInjector.cleanUp()
self._opMetadataInjector = None
self._opReader.cleanUp()
self._opReader = None
# The dataset doesn't exist yet.
self.Output.meta.NOTREADY = True
def get_provider_slot(
self, meta: Optional[Dict] = None, parent: Optional[Operator] = None, graph: Optional[Graph] = None
) -> OutputSlot:
metadata = {"display_mode": self.display_mode, "axistags": self.axistags}
metadata.update(meta or {})
if self.drange is not None:
metadata["drange"] = self.drange
elif self.laneDtype == numpy.uint8:
metadata["drange"] = (0, 255)
if self.normalizeDisplay is not None:
metadata["normalizeDisplay"] = self.normalizeDisplay
if self.subvolume_roi is not None:
metadata["subvolume_roi"] = self.subvolume_roi
opMetadataInjector = OpMetadataInjector(parent=parent, graph=graph)
opMetadataInjector.Input.connect(self.get_non_transposed_provider_slot(parent=parent, graph=graph))
opMetadataInjector.Metadata.setValue(metadata)
return opMetadataInjector.Output
def __init__(self, *args, **kwargs):
super(OpFormattedDataExport, self).__init__(*args, **kwargs)
self._dirty = True
opSubRegion = OpSubRegion(parent=self)
opSubRegion.Input.connect(self.Input)
self._opSubRegion = opSubRegion
# If normalization parameters are provided, we inject a 'drange'
# metadata item for downstream operators/gui to use.
opDrangeInjection = OpMetadataInjector(parent=self)
opDrangeInjection.Input.connect(opSubRegion.Output)
self._opDrangeInjection = opDrangeInjection
# Normalization and dtype conversion are performed in one step
# using an OpPixelOperator.
opNormalizeAndConvert = OpPixelOperator(parent=self)
opNormalizeAndConvert.Input.connect(opDrangeInjection.Output)
self._opNormalizeAndConvert = opNormalizeAndConvert
# ConvertedImage shows the full result but WITHOUT axis reordering.
self.ConvertedImage.connect(self._opNormalizeAndConvert.Output)
opReorderAxes = OpReorderAxes(parent=self)
opReorderAxes.Input.connect(opNormalizeAndConvert.Output)
self._opReorderAxes = opReorderAxes
self.ImageToExport.connect(opReorderAxes.Output)
self._opExportSlot = OpExportSlot(parent=self)
self._opExportSlot.Input.connect(opReorderAxes.Output)
self._opExportSlot.OutputFormat.connect(self.OutputFormat)
self.ExportPath.connect(self._opExportSlot.ExportPath)
self.FormatSelectionErrorMsg.connect(
self._opExportSlot.FormatSelectionErrorMsg)
self.progressSignal = self._opExportSlot.progressSignal
def import_labeling_layer(labelLayer, labelingSlots, parent_widget=None):
"""
Prompt the user for layer import settings, and perform the layer import.
:param labelLayer: The top label layer source
:param labelingSlots: An instance of LabelingGui.LabelingSlots
:param parent_widget: The Qt GUI parent object
"""
writeSeeds = labelingSlots.labelInput
assert isinstance(
writeSeeds,
lazyflow.graph.Slot), "slot is of type %r" % (type(writeSeeds))
opLabels = writeSeeds.getRealOperator()
assert isinstance(opLabels, lazyflow.graph.Operator
), "slot's operator is of type %r" % (type(opLabels))
recentlyImported = PreferencesManager().get('labeling',
'recently imported')
mostRecentProjectPath = PreferencesManager().get('shell',
'recently opened')
mostRecentImageFile = PreferencesManager().get('DataSelection',
'recent image')
if recentlyImported:
defaultDirectory = os.path.split(recentlyImported)[0]
elif mostRecentProjectPath:
defaultDirectory = os.path.split(mostRecentProjectPath)[0]
elif mostRecentImageFile:
defaultDirectory = os.path.split(mostRecentImageFile)[0]
else:
defaultDirectory = os.path.expanduser('~')
fileNames = DataSelectionGui.getImageFileNamesToOpen(
parent_widget, defaultDirectory)
fileNames = map(str, fileNames)
if not fileNames:
return
PreferencesManager().set('labeling', 'recently imported', fileNames[0])
try:
# Initialize operators
opImport = OpInputDataReader(parent=opLabels.parent)
opCache = OpArrayCache(parent=opLabels.parent)
opMetadataInjector = OpMetadataInjector(parent=opLabels.parent)
opReorderAxes = OpReorderAxes(parent=opLabels.parent)
# Set up the pipeline as follows:
#
# opImport --> opCache --> opMetadataInjector --------> opReorderAxes --(inject via setInSlot)--> labelInput
# / /
# User-specified axisorder labelInput.meta.axistags
opImport.WorkingDirectory.setValue(defaultDirectory)
opImport.FilePath.setValue(fileNames[0] if len(fileNames) ==
1 else os.path.pathsep.join(fileNames))
assert opImport.Output.ready()
opCache.blockShape.setValue(opImport.Output.meta.shape)
opCache.Input.connect(opImport.Output)
assert opCache.Output.ready()
opMetadataInjector.Input.connect(opCache.Output)
metadata = opCache.Output.meta.copy()
opMetadataInjector.Metadata.setValue(metadata)
opReorderAxes.Input.connect(opMetadataInjector.Output)
# Transpose the axes for assignment to the labeling operator.
opReorderAxes.AxisOrder.setValue(writeSeeds.meta.getAxisKeys())
# We'll show a little window with a busy indicator while the data is loading
busy_dlg = QProgressDialog(parent=parent_widget)
busy_dlg.setLabelText("Importing Label Data...")
busy_dlg.setCancelButton(None)
busy_dlg.setMinimum(100)
busy_dlg.setMaximum(100)
def close_busy_dlg(*args):
QApplication.postEvent(busy_dlg, QCloseEvent())
# Load the data from file into our cache
# When it's done loading, close the progress dialog.
req = opCache.Output[:]
req.notify_finished(close_busy_dlg)
req.notify_failed(close_busy_dlg)
req.submit()
busy_dlg.exec_()
readData = req.result
maxLabels = len(labelingSlots.labelNames.value)
# Can't use return_counts feature because that requires numpy >= 1.9
#unique_read_labels, readLabelCounts = numpy.unique(readData, return_counts=True)
# This does the same as the above, albeit slower, and probably with more ram.
unique_read_labels = numpy.unique(readData)
readLabelCounts = numpy.bincount(readData.flat)[unique_read_labels]
labelInfo = (maxLabels, (unique_read_labels, readLabelCounts))
del readData
# Ask the user how to interpret the data.
settingsDlg = LabelImportOptionsDlg(parent_widget, fileNames,
opMetadataInjector.Output,
labelingSlots.labelInput,
labelInfo)
def handle_updated_axes():
# The user is specifying a new interpretation of the file's axes
updated_axisorder = str(settingsDlg.axesEdit.text())
metadata = opMetadataInjector.Metadata.value.copy()
metadata.axistags = vigra.defaultAxistags(updated_axisorder)
opMetadataInjector.Metadata.setValue(metadata)
settingsDlg.axesEdit.editingFinished.connect(handle_updated_axes)
dlg_result = settingsDlg.exec_()
if dlg_result != LabelImportOptionsDlg.Accepted:
return
# Get user's chosen label mapping from dlg
labelMapping = settingsDlg.labelMapping
# Get user's chosen offsets.
# Offsets in dlg only include the file axes, not the 5D axes expected by the label input,
# so expand them to full 5D
axes_5d = opReorderAxes.Output.meta.getAxisKeys()
tagged_offsets = collections.OrderedDict(
zip(axes_5d, [0] * len(axes_5d)))
tagged_offsets.update(
dict(
zip(opMetadataInjector.Output.meta.getAxisKeys(),
settingsDlg.imageOffsets)))
imageOffsets = tagged_offsets.values()
# Optimization if mapping is identity
if labelMapping.keys() == labelMapping.values():
labelMapping = None
# This will be fast (it's already cached)
label_data = opReorderAxes.Output[:].wait()
# Map input labels to output labels
if labelMapping:
# There are other ways to do a relabeling (e.g skimage.segmentation.relabel_sequential)
# But this supports potentially huge values of unique_read_labels (in the billions),
# without needing GB of RAM.
mapping_indexes = numpy.searchsorted(unique_read_labels,
label_data)
new_labels = numpy.array(
[labelMapping[x] for x in unique_read_labels])
label_data[:] = new_labels[mapping_indexes]
label_roi = numpy.array(roiFromShape(opReorderAxes.Output.meta.shape))
label_roi += imageOffsets
label_slice = roiToSlice(*label_roi)
writeSeeds[label_slice] = label_data
finally:
opReorderAxes.cleanUp()
opMetadataInjector.cleanUp()
opCache.cleanUp()
opImport.cleanUp()
def connectLane(self, laneIndex):
# Get a handle to each operator
opData = self.dataSelectionApplet.topLevelOperator.getLane(laneIndex)
opFirstFeatures = self.featureSelectionApplets[
0].topLevelOperator.getLane(laneIndex)
opFirstClassify = self.pcApplets[0].topLevelOperator.getLane(laneIndex)
opFinalClassify = self.pcApplets[-1].topLevelOperator.getLane(
laneIndex)
opDataExport = self.dataExportApplet.topLevelOperator.getLane(
laneIndex)
def checkConstraints(*_):
# if (opData.Image.meta.dtype in [np.uint8, np.uint16]) == False:
# msg = "The Autocontext Workflow only supports 8-bit images (UINT8 pixel type)\n"\
# "or 16-bit images (UINT16 pixel type)\n"\
# "Your image has a pixel type of {}. Please convert your data to UINT8 and try again."\
# .format( str(np.dtype(opData.Image.meta.dtype)) )
# raise DatasetConstraintError( "Autocontext Workflow", msg, unfixable=True )
pass
opData.Image.notifyReady(checkConstraints)
# Input Image -> Feature Op
# and -> Classification Op (for display)
opFirstFeatures.InputImage.connect(opData.Image)
opFirstClassify.InputImages.connect(opData.Image)
# Feature Images -> Classification Op (for training, prediction)
opFirstClassify.FeatureImages.connect(opFirstFeatures.OutputImage)
opFirstClassify.CachedFeatureImages.connect(
opFirstFeatures.CachedOutputImage)
upstreamPcApplets = self.pcApplets[0:-1]
downstreamFeatureApplets = self.featureSelectionApplets[1:]
downstreamPcApplets = self.pcApplets[1:]
for (upstreamPcApplet, downstreamFeaturesApplet,
downstreamPcApplet) in zip(upstreamPcApplets,
downstreamFeatureApplets,
downstreamPcApplets):
opUpstreamClassify = upstreamPcApplet.topLevelOperator.getLane(
laneIndex)
opDownstreamFeatures = downstreamFeaturesApplet.topLevelOperator.getLane(
laneIndex)
opDownstreamClassify = downstreamPcApplet.topLevelOperator.getLane(
laneIndex)
# Connect label inputs (all are connected together).
# opDownstreamClassify.LabelInputs.connect( opUpstreamClassify.LabelInputs )
# Connect data path
assert opData.Image.meta.dtype == opUpstreamClassify.PredictionProbabilitiesAutocontext.meta.dtype, (
"Probability dtype needs to match up with input image dtype, got: "
f"input: {opData.Image.meta.dtype} "
f"probabilities: {opUpstreamClassify.PredictionProbabilitiesAutocontext.meta.dtype}"
)
opStacker = OpMultiArrayStacker(parent=self)
opStacker.Images.resize(2)
opStacker.Images[0].connect(opData.Image)
opStacker.Images[1].connect(
opUpstreamClassify.PredictionProbabilitiesAutocontext)
opStacker.AxisFlag.setValue("c")
opDownstreamFeatures.InputImage.connect(opStacker.Output)
opDownstreamClassify.InputImages.connect(opStacker.Output)
opDownstreamClassify.FeatureImages.connect(
opDownstreamFeatures.OutputImage)
opDownstreamClassify.CachedFeatureImages.connect(
opDownstreamFeatures.CachedOutputImage)
# Data Export connections
opDataExport.RawData.connect(opData.ImageGroup[self.DATA_ROLE_RAW])
opDataExport.RawDatasetInfo.connect(
opData.DatasetGroup[self.DATA_ROLE_RAW])
opDataExport.ConstraintDataset.connect(
opData.ImageGroup[self.DATA_ROLE_RAW])
opDataExport.Inputs.resize(len(self.EXPORT_NAMES))
for reverse_stage_index, (stage_index, pcApplet) in enumerate(
reversed(list(enumerate(self.pcApplets)))):
opPc = pcApplet.topLevelOperator.getLane(laneIndex)
num_items_per_stage = len(self.EXPORT_NAMES_PER_STAGE)
opDataExport.Inputs[num_items_per_stage * reverse_stage_index +
0].connect(
opPc.HeadlessPredictionProbabilities)
opDataExport.Inputs[num_items_per_stage * reverse_stage_index +
1].connect(opPc.SimpleSegmentation)
opDataExport.Inputs[num_items_per_stage * reverse_stage_index +
2].connect(opPc.HeadlessUncertaintyEstimate)
opDataExport.Inputs[num_items_per_stage * reverse_stage_index +
3].connect(opPc.FeatureImages)
opDataExport.Inputs[num_items_per_stage * reverse_stage_index +
4].connect(opPc.LabelImages)
opDataExport.Inputs[
num_items_per_stage * reverse_stage_index + 5].connect(
opPc.InputImages
) # Input must come last due to an assumption in PixelClassificationDataExportGui
# One last export slot for all probabilities, all stages
opAllStageStacker = OpMultiArrayStacker(parent=self)
opAllStageStacker.Images.resize(len(self.pcApplets))
for stage_index, pcApplet in enumerate(self.pcApplets):
opPc = pcApplet.topLevelOperator.getLane(laneIndex)
opAllStageStacker.Images[stage_index].connect(
opPc.HeadlessPredictionProbabilities)
opAllStageStacker.AxisFlag.setValue("c")
# The ideal_blockshape metadata field will be bogus, so just eliminate it
# (Otherwise, the channels could be split up in an unfortunate way.)
opMetadataOverride = OpMetadataInjector(parent=self)
opMetadataOverride.Input.connect(opAllStageStacker.Output)
opMetadataOverride.Metadata.setValue({"ideal_blockshape": None})
opDataExport.Inputs[-1].connect(opMetadataOverride.Output)
for slot in opDataExport.Inputs:
assert slot.upstream_slot is not None
def import_labeling_layer(labelLayer, labelingSlots, parent_widget=None):
"""
Prompt the user for layer import settings, and perform the layer import.
:param labelLayer: The top label layer source
:param labelingSlots: An instance of LabelingGui.LabelingSlots
:param parent_widget: The Qt GUI parent object
"""
writeSeeds = labelingSlots.labelInput
assert isinstance(
writeSeeds,
lazyflow.graph.Slot), "slot is of type %r" % (type(writeSeeds))
opLabels = writeSeeds.getRealOperator()
assert isinstance(opLabels, lazyflow.graph.Operator
), "slot's operator is of type %r" % (type(opLabels))
recentlyImported = PreferencesManager().get('labeling',
'recently imported')
mostRecentProjectPath = PreferencesManager().get('shell',
'recently opened')
mostRecentImageFile = PreferencesManager().get('DataSelection',
'recent image')
if recentlyImported:
defaultDirectory = os.path.split(recentlyImported)[0]
elif mostRecentProjectPath:
defaultDirectory = os.path.split(mostRecentProjectPath)[0]
elif mostRecentImageFile:
defaultDirectory = os.path.split(mostRecentImageFile)[0]
else:
defaultDirectory = os.path.expanduser('~')
fileNames = DataSelectionGui.getImageFileNamesToOpen(
parent_widget, defaultDirectory)
fileNames = map(str, fileNames)
if not fileNames:
return
PreferencesManager().set('labeling', 'recently imported', fileNames[0])
try:
# Initialize operators
opImport = OpInputDataReader(parent=opLabels.parent)
opCache = OpBlockedArrayCache(parent=opLabels.parent)
opMetadataInjector = OpMetadataInjector(parent=opLabels.parent)
opReorderAxes = OpReorderAxes(parent=opLabels.parent)
# Set up the pipeline as follows:
#
# opImport --> (opCache) --> opMetadataInjector --------> opReorderAxes --(inject via setInSlot)--> labelInput
# / /
# User-specified axisorder labelInput.meta.axistags
opImport.WorkingDirectory.setValue(defaultDirectory)
opImport.FilePath.setValue(fileNames[0] if len(fileNames) ==
1 else os.path.pathsep.join(fileNames))
assert opImport.Output.ready()
maxLabels = len(labelingSlots.labelNames.value)
# We don't bother with counting the label pixels
# (and caching the data) if it's big (1 GB)
if numpy.prod(opImport.Output.meta.shape) > 1e9:
reading_slot = opImport.Output
# For huge data, we don't go through and search for the pixel values,
# because that takes an annoyingly long amount of time.
# Instead, we make the reasonable assumption that the input labels are already 1,2,3..N
# and we don't tell the user what the label pixel counts are.
unique_read_labels = numpy.array(range(maxLabels + 1))
readLabelCounts = numpy.array([-1] * (maxLabels + 1))
labelInfo = (maxLabels, (unique_read_labels, readLabelCounts))
else:
opCache.Input.connect(opImport.Output)
opCache.CompressionEnabled.setValue(True)
assert opCache.Output.ready()
reading_slot = opCache.Output
# We'll show a little window with a busy indicator while the data is loading
busy_dlg = QProgressDialog(parent=parent_widget)
busy_dlg.setLabelText("Scanning Label Data...")
busy_dlg.setCancelButton(None)
busy_dlg.setMinimum(100)
busy_dlg.setMaximum(100)
def close_busy_dlg(*args):
QApplication.postEvent(busy_dlg, QCloseEvent())
# Load the data from file into our cache
# When it's done loading, close the progress dialog.
req = reading_slot[:]
req.notify_finished(close_busy_dlg)
req.notify_failed(close_busy_dlg)
req.submit()
busy_dlg.exec_()
readData = req.result
# Can't use return_counts feature because that requires numpy >= 1.9
#unique_read_labels, readLabelCounts = numpy.unique(readData, return_counts=True)
# This does the same as the above, albeit slower, and probably with more ram.
bincounts = chunked_bincount(readData)
unique_read_labels = bincounts.nonzero()[0].astype(readData.dtype,
copy=False)
readLabelCounts = bincounts[unique_read_labels]
labelInfo = (maxLabels, (unique_read_labels, readLabelCounts))
del readData
opMetadataInjector.Input.connect(reading_slot)
metadata = reading_slot.meta.copy()
opMetadataInjector.Metadata.setValue(metadata)
opReorderAxes.Input.connect(opMetadataInjector.Output)
# Transpose the axes for assignment to the labeling operator.
opReorderAxes.AxisOrder.setValue(writeSeeds.meta.getAxisKeys())
# Ask the user how to interpret the data.
settingsDlg = LabelImportOptionsDlg(parent_widget, fileNames,
opMetadataInjector.Output,
labelingSlots.labelInput,
labelInfo)
def handle_updated_axes():
# The user is specifying a new interpretation of the file's axes
updated_axisorder = str(settingsDlg.axesEdit.text())
metadata = opMetadataInjector.Metadata.value.copy()
metadata.axistags = vigra.defaultAxistags(updated_axisorder)
opMetadataInjector.Metadata.setValue(metadata)
if opReorderAxes._invalid_axes:
settingsDlg.buttonBox.button(
QDialogButtonBox.Ok).setEnabled(False)
# Red background
settingsDlg.axesEdit.setStyleSheet(
"QLineEdit { background: rgb(255, 128, 128);"
"selection-background-color: rgb(128, 128, 255); }")
settingsDlg.axesEdit.editingFinished.connect(handle_updated_axes)
# Initialize
handle_updated_axes()
dlg_result = settingsDlg.exec_()
if dlg_result != LabelImportOptionsDlg.Accepted:
return
# Get user's chosen label mapping from dlg
labelMapping = settingsDlg.labelMapping
# Get user's chosen offsets, ordered by the 'write seeds' slot
axes_5d = opReorderAxes.Output.meta.getAxisKeys()
tagged_offsets = collections.OrderedDict(
zip(axes_5d, [0] * len(axes_5d)))
tagged_offsets.update(
dict(
zip(opReorderAxes.Output.meta.getAxisKeys(),
settingsDlg.imageOffsets)))
imageOffsets = tagged_offsets.values()
# Optimization if mapping is identity
if labelMapping.keys() == labelMapping.values():
labelMapping = None
# If the data was already cached, this will be fast.
label_data = opReorderAxes.Output[:].wait()
# Map input labels to output labels
if labelMapping:
# There are other ways to do a relabeling (e.g skimage.segmentation.relabel_sequential)
# But this supports potentially huge values of unique_read_labels (in the billions),
# without needing GB of RAM.
mapping_indexes = numpy.searchsorted(unique_read_labels,
label_data)
new_labels = numpy.array(
[labelMapping[x] for x in unique_read_labels])
label_data[:] = new_labels[mapping_indexes]
label_roi = numpy.array(roiFromShape(opReorderAxes.Output.meta.shape))
label_roi += imageOffsets
label_slice = roiToSlice(*label_roi)
writeSeeds[label_slice] = label_data
finally:
opReorderAxes.cleanUp()
opMetadataInjector.cleanUp()
opCache.cleanUp()
opImport.cleanUp()
def setupOutputs(self):
self.internalCleanup()
datasetInfo = self.Dataset.value
try:
# Data only comes from the project file if the user said so AND it exists in the project
datasetInProject = (
datasetInfo.location == DatasetInfo.Location.ProjectInternal)
datasetInProject &= self.ProjectFile.ready()
if datasetInProject:
internalPath = self.ProjectDataGroup.value + '/' + datasetInfo.datasetId
datasetInProject &= internalPath in self.ProjectFile.value
# If we should find the data in the project file, use a dataset reader
if datasetInProject:
opReader = OpStreamingH5N5Reader(parent=self)
opReader.H5N5File.setValue(self.ProjectFile.value)
opReader.InternalPath.setValue(internalPath)
providerSlot = opReader.OutputImage
elif datasetInfo.location == DatasetInfo.Location.PreloadedArray:
preloaded_array = datasetInfo.preloaded_array
assert preloaded_array is not None
if not hasattr(preloaded_array, 'axistags'):
axisorder = get_default_axisordering(preloaded_array.shape)
preloaded_array = vigra.taggedView(preloaded_array,
axisorder)
opReader = OpArrayPiper(parent=self)
opReader.Input.setValue(preloaded_array)
providerSlot = opReader.Output
else:
if datasetInfo.realDataSource:
# Use a normal (filesystem) reader
opReader = OpInputDataReader(parent=self)
if datasetInfo.subvolume_roi is not None:
opReader.SubVolumeRoi.setValue(
datasetInfo.subvolume_roi)
opReader.WorkingDirectory.setValue(
self.WorkingDirectory.value)
opReader.SequenceAxis.setValue(datasetInfo.sequenceAxis)
opReader.FilePath.setValue(datasetInfo.filePath)
else:
# Use fake reader: allows to run the project in a headless
# mode without the raw data
opReader = OpZeroDefault(parent=self)
opReader.MetaInput.meta = MetaDict(
shape=datasetInfo.laneShape,
dtype=datasetInfo.laneDtype,
drange=datasetInfo.drange,
axistags=datasetInfo.axistags)
opReader.MetaInput.setValue(
numpy.zeros(datasetInfo.laneShape,
dtype=datasetInfo.laneDtype))
providerSlot = opReader.Output
self._opReaders.append(opReader)
# Inject metadata if the dataset info specified any.
# Also, inject if if dtype is uint8, which we can reasonably assume has drange (0,255)
metadata = {}
metadata['display_mode'] = datasetInfo.display_mode
role_name = self.RoleName.value
if 'c' not in providerSlot.meta.getTaggedShape():
num_channels = 0
else:
num_channels = providerSlot.meta.getTaggedShape()['c']
if num_channels > 1:
metadata['channel_names'] = [
"{}-{}".format(role_name, i) for i in range(num_channels)
]
else:
metadata['channel_names'] = [role_name]
if datasetInfo.drange is not None:
metadata['drange'] = datasetInfo.drange
elif providerSlot.meta.dtype == numpy.uint8:
# SPECIAL case for uint8 data: Provide a default drange.
# The user can always override this herself if she wants.
metadata['drange'] = (0, 255)
if datasetInfo.normalizeDisplay is not None:
metadata['normalizeDisplay'] = datasetInfo.normalizeDisplay
if datasetInfo.axistags is not None:
if len(datasetInfo.axistags) != len(providerSlot.meta.shape):
ts = providerSlot.meta.getTaggedShape()
if 'c' in ts and 'c' not in datasetInfo.axistags and len(
datasetInfo.axistags) + 1 == len(ts):
# provider has no channel axis, but template has => add channel axis to provider
# fixme: Optimize the axistag guess in BatchProcessingApplet instead of hoping for the best here
metadata['axistags'] = vigra.defaultAxistags(
''.join(datasetInfo.axistags.keys()) + 'c')
else:
# This usually only happens when we copied a DatasetInfo from another lane,
# and used it as a 'template' to initialize this lane.
# This happens in the BatchProcessingApplet when it attempts to guess the axistags of
# batch images based on the axistags chosen by the user in the interactive images.
# If the interactive image tags don't make sense for the batch image, you get this error.
raise Exception(
"Your dataset's provided axistags ({}) do not have the "
"correct dimensionality for your dataset, which has {} dimensions."
.format(
"".join(tag.key
for tag in datasetInfo.axistags),
len(providerSlot.meta.shape)))
else:
metadata['axistags'] = datasetInfo.axistags
if datasetInfo.original_axistags is not None:
metadata['original_axistags'] = datasetInfo.original_axistags
if datasetInfo.subvolume_roi is not None:
metadata['subvolume_roi'] = datasetInfo.subvolume_roi
# FIXME: We are overwriting the axistags metadata to intentionally allow
# the user to change our interpretation of which axis is which.
# That's okay, but technically there's a special corner case if
# the user redefines the channel axis index.
# Technically, it invalidates the meaning of meta.ram_usage_per_requested_pixel.
# For most use-cases, that won't really matter, which is why I'm not worrying about it right now.
opMetadataInjector = OpMetadataInjector(parent=self)
opMetadataInjector.Input.connect(providerSlot)
opMetadataInjector.Metadata.setValue(metadata)
providerSlot = opMetadataInjector.Output
self._opReaders.append(opMetadataInjector)
self._NonTransposedImage.connect(providerSlot)
# make sure that x and y axes are present in the selected axis order
if 'x' not in providerSlot.meta.axistags or 'y' not in providerSlot.meta.axistags:
raise DatasetConstraintError(
"DataSelection",
"Data must always have at leaset the axes x and y for ilastik to work."
)
if self.forceAxisOrder:
assert isinstance(self.forceAxisOrder, list), \
"forceAxisOrder should be a *list* of preferred axis orders"
# Before we re-order, make sure no non-singleton
# axes would be dropped by the forced order.
tagged_provider_shape = providerSlot.meta.getTaggedShape()
minimal_axes = [
k_v for k_v in list(tagged_provider_shape.items())
if k_v[1] > 1
]
minimal_axes = set(k for k, v in minimal_axes)
# Pick the shortest of the possible 'forced' orders that
# still contains all the axes of the original dataset.
candidate_orders = list(self.forceAxisOrder)
candidate_orders = [
order for order in candidate_orders
if minimal_axes.issubset(set(order))
]
if len(candidate_orders) == 0:
msg = "The axes of your dataset ({}) are not compatible with any of the allowed"\
" axis configurations used by this workflow ({}). Please fix them."\
.format(providerSlot.meta.getAxisKeys(), self.forceAxisOrder)
raise DatasetConstraintError("DataSelection", msg)
output_order = sorted(candidate_orders,
key=len)[0] # the shortest one
output_order = "".join(output_order)
else:
# No forced axisorder is supplied. Use original axisorder as
# output order: it is assumed by the export-applet, that the
# an OpReorderAxes operator is added in the beginning
output_order = "".join(
[x for x in providerSlot.meta.axistags.keys()])
op5 = OpReorderAxes(parent=self)
op5.AxisOrder.setValue(output_order)
op5.Input.connect(providerSlot)
providerSlot = op5.Output
self._opReaders.append(op5)
# If the channel axis is missing, add it as last axis
if 'c' not in providerSlot.meta.axistags:
op5 = OpReorderAxes(parent=self)
keys = providerSlot.meta.getAxisKeys()
# Append
keys.append('c')
op5.AxisOrder.setValue("".join(keys))
op5.Input.connect(providerSlot)
providerSlot = op5.Output
self._opReaders.append(op5)
# Connect our external outputs to the internal operators we chose
self.Image.connect(providerSlot)
self.AllowLabels.setValue(datasetInfo.allowLabels)
# If the reading operator provides a nickname, use it.
if self.Image.meta.nickname is not None:
datasetInfo.nickname = self.Image.meta.nickname
imageName = datasetInfo.nickname
if imageName == "":
imageName = datasetInfo.filePath
self.ImageName.setValue(imageName)
except:
self.internalCleanup()
raise
def setupOutputs(self):
self.internalCleanup()
datasetInfo = self.Dataset.value
try:
# Data only comes from the project file if the user said so AND it exists in the project
datasetInProject = (datasetInfo.location == DatasetInfo.Location.ProjectInternal)
datasetInProject &= self.ProjectFile.ready()
if datasetInProject:
internalPath = self.ProjectDataGroup.value + '/' + datasetInfo.datasetId
datasetInProject &= internalPath in self.ProjectFile.value
# If we should find the data in the project file, use a dataset reader
if datasetInProject:
opReader = OpStreamingHdf5Reader(parent=self)
opReader.Hdf5File.setValue(self.ProjectFile.value)
opReader.InternalPath.setValue(internalPath)
providerSlot = opReader.OutputImage
elif datasetInfo.location == DatasetInfo.Location.PreloadedArray:
preloaded_array = datasetInfo.preloaded_array
assert preloaded_array is not None
if not hasattr(preloaded_array, 'axistags'):
# Guess the axis order, since one was not provided.
axisorders = { 2 : 'yx',
3 : 'zyx',
4 : 'zyxc',
5 : 'tzyxc' }
shape = preloaded_array.shape
ndim = preloaded_array.ndim
assert ndim != 0, "Support for 0-D data not yet supported"
assert ndim != 1, "Support for 1-D data not yet supported"
assert ndim <= 5, "No support for data with more than 5 dimensions."
axisorder = axisorders[ndim]
if ndim == 3 and shape[2] <= 4:
# Special case: If the 3rd dim is small, assume it's 'c', not 'z'
axisorder = 'yxc'
preloaded_array = vigra.taggedView(preloaded_array, axisorder)
opReader = OpArrayPiper(parent=self)
opReader.Input.setValue( preloaded_array )
providerSlot = opReader.Output
else:
# Use a normal (filesystem) reader
opReader = OpInputDataReader(parent=self)
if datasetInfo.subvolume_roi is not None:
opReader.SubVolumeRoi.setValue( datasetInfo.subvolume_roi )
opReader.WorkingDirectory.setValue( self.WorkingDirectory.value )
opReader.FilePath.setValue(datasetInfo.filePath)
providerSlot = opReader.Output
self._opReaders.append(opReader)
# Inject metadata if the dataset info specified any.
# Also, inject if if dtype is uint8, which we can reasonably assume has drange (0,255)
metadata = {}
metadata['display_mode'] = datasetInfo.display_mode
role_name = self.RoleName.value
if 'c' not in providerSlot.meta.getTaggedShape():
num_channels = 0
else:
num_channels = providerSlot.meta.getTaggedShape()['c']
if num_channels > 1:
metadata['channel_names'] = ["{}-{}".format(role_name, i) for i in range(num_channels)]
else:
metadata['channel_names'] = [role_name]
if datasetInfo.drange is not None:
metadata['drange'] = datasetInfo.drange
elif providerSlot.meta.dtype == numpy.uint8:
# SPECIAL case for uint8 data: Provide a default drange.
# The user can always override this herself if she wants.
metadata['drange'] = (0,255)
if datasetInfo.normalizeDisplay is not None:
metadata['normalizeDisplay'] = datasetInfo.normalizeDisplay
if datasetInfo.axistags is not None:
if len(datasetInfo.axistags) != len(providerSlot.meta.shape):
# This usually only happens when we copied a DatasetInfo from another lane,
# and used it as a 'template' to initialize this lane.
# This happens in the BatchProcessingApplet when it attempts to guess the axistags of
# batch images based on the axistags chosen by the user in the interactive images.
# If the interactive image tags don't make sense for the batch image, you get this error.
raise Exception( "Your dataset's provided axistags ({}) do not have the "
"correct dimensionality for your dataset, which has {} dimensions."
.format( "".join(tag.key for tag in datasetInfo.axistags), len(providerSlot.meta.shape) ) )
metadata['axistags'] = datasetInfo.axistags
if datasetInfo.subvolume_roi is not None:
metadata['subvolume_roi'] = datasetInfo.subvolume_roi
# FIXME: We are overwriting the axistags metadata to intentionally allow
# the user to change our interpretation of which axis is which.
# That's okay, but technically there's a special corner case if
# the user redefines the channel axis index.
# Technically, it invalidates the meaning of meta.ram_usage_per_requested_pixel.
# For most use-cases, that won't really matter, which is why I'm not worrying about it right now.
opMetadataInjector = OpMetadataInjector( parent=self )
opMetadataInjector.Input.connect( providerSlot )
opMetadataInjector.Metadata.setValue( metadata )
providerSlot = opMetadataInjector.Output
self._opReaders.append( opMetadataInjector )
self._NonTransposedImage.connect(providerSlot)
if self.forceAxisOrder:
# Before we re-order, make sure no non-singleton
# axes would be dropped by the forced order.
output_order = "".join(self.forceAxisOrder)
provider_order = "".join(providerSlot.meta.getAxisKeys())
tagged_provider_shape = providerSlot.meta.getTaggedShape()
dropped_axes = set(provider_order) - set(output_order)
if any(tagged_provider_shape[a] > 1 for a in dropped_axes):
msg = "The axes of your dataset ({}) are not compatible with the axes used by this workflow ({}). Please fix them."\
.format(provider_order, output_order)
raise DatasetConstraintError("DataSelection", msg)
op5 = OpReorderAxes(parent=self)
op5.AxisOrder.setValue(self.forceAxisOrder)
op5.Input.connect(providerSlot)
providerSlot = op5.Output
self._opReaders.append(op5)
# If the channel axis is not last (or is missing),
# make sure the axes are re-ordered so that channel is last.
if providerSlot.meta.axistags.index('c') != len( providerSlot.meta.axistags )-1:
op5 = OpReorderAxes( parent=self )
keys = providerSlot.meta.getTaggedShape().keys()
try:
# Remove if present.
keys.remove('c')
except ValueError:
pass
# Append
keys.append('c')
op5.AxisOrder.setValue( "".join( keys ) )
op5.Input.connect( providerSlot )
providerSlot = op5.Output
self._opReaders.append( op5 )
# Connect our external outputs to the internal operators we chose
self.Image.connect(providerSlot)
# Set the image name and usage flag
self.AllowLabels.setValue( datasetInfo.allowLabels )
# If the reading operator provides a nickname, use it.
if self.Image.meta.nickname is not None:
datasetInfo.nickname = self.Image.meta.nickname
imageName = datasetInfo.nickname
if imageName == "":
imageName = datasetInfo.filePath
self.ImageName.setValue(imageName)
except:
self.internalCleanup()
raise
def setupOutputs(self):
self.internalCleanup()
datasetInfo = self.Dataset.value
try:
providerSlot = datasetInfo.get_provider_slot(parent=self)
opReader = providerSlot.operator
self._opReaders.append(opReader)
# Inject metadata if the dataset info specified any.
# Also, inject if if dtype is uint8, which we can reasonably assume has drange (0,255)
metadata = {}
metadata["display_mode"] = datasetInfo.display_mode
role_name = self.RoleName.value
if "c" not in providerSlot.meta.getTaggedShape():
num_channels = 0
else:
num_channels = providerSlot.meta.getTaggedShape()["c"]
if num_channels > 1:
metadata["channel_names"] = [f"{role_name}-{i}" for i in range(num_channels)]
else:
metadata["channel_names"] = [role_name]
if datasetInfo.drange is not None:
metadata["drange"] = datasetInfo.drange
elif providerSlot.meta.dtype == numpy.uint8:
metadata["drange"] = (0, 255)
if datasetInfo.normalizeDisplay is not None:
metadata["normalizeDisplay"] = datasetInfo.normalizeDisplay
if datasetInfo.axistags is not None:
metadata["axistags"] = datasetInfo.axistags
if datasetInfo.subvolume_roi is not None:
metadata["subvolume_roi"] = datasetInfo.subvolume_roi
# FIXME: We are overwriting the axistags metadata to intentionally allow
# the user to change our interpretation of which axis is which.
# That's okay, but technically there's a special corner case if
# the user redefines the channel axis index.
# Technically, it invalidates the meaning of meta.ram_usage_per_requested_pixel.
# For most use-cases, that won't really matter, which is why I'm not worrying about it right now.
opMetadataInjector = OpMetadataInjector(parent=self)
opMetadataInjector.Input.connect(providerSlot)
opMetadataInjector.Metadata.setValue(metadata)
providerSlot = opMetadataInjector.Output
self._opReaders.append(opMetadataInjector)
self._NonTransposedImage.connect(providerSlot)
# make sure that x and y axes are present in the selected axis order
if "x" not in providerSlot.meta.axistags or "y" not in providerSlot.meta.axistags:
raise DatasetConstraintError(
"DataSelection", "Data must always have at leaset the axes x and y for ilastik to work."
)
if self.forceAxisOrder:
assert isinstance(
self.forceAxisOrder, list
), "forceAxisOrder should be a *list* of preferred axis orders"
# Before we re-order, make sure no non-singleton
# axes would be dropped by the forced order.
tagged_provider_shape = providerSlot.meta.getTaggedShape()
minimal_axes = {k for k, v in tagged_provider_shape.items() if v > 1}
# Pick the shortest of the possible 'forced' orders that
# still contains all the axes of the original dataset.
candidate_orders = list(self.forceAxisOrder)
candidate_orders = [order for order in candidate_orders if minimal_axes.issubset(set(order))]
if len(candidate_orders) == 0:
msg = (
f"The axes of your dataset ({providerSlot.meta.getAxisKeys()}) are not compatible with "
f"any of the allowed axis configurations used by this workflow ({self.forceAxisOrder})."
)
raise DatasetConstraintError("DataSelection", msg)
output_order = sorted(candidate_orders, key=len)[0] # the shortest one
output_order = "".join(output_order)
else:
# No forced axisorder is supplied. Use original axisorder as
# output order: it is assumed by the export-applet, that the
# an OpReorderAxes operator is added in the beginning
output_order = providerSlot.meta.getAxisKeys()
if "c" not in output_order:
output_order += "c"
op5 = OpReorderAxes(parent=self, AxisOrder=output_order, Input=providerSlot)
self._opReaders.append(op5)
self.Image.connect(op5.Output)
self.AllowLabels.setValue(datasetInfo.allowLabels)
if self.Image.meta.nickname is not None:
datasetInfo.nickname = self.Image.meta.nickname
self.ImageName.setValue(datasetInfo.nickname)
except:
self.internalCleanup()
raise
def setupOutputs(self):
self.internalCleanup()
datasetInfo = self.Dataset.value
try:
# Data only comes from the project file if the user said so AND it exists in the project
datasetInProject = (
datasetInfo.location == DatasetInfo.Location.ProjectInternal)
datasetInProject &= self.ProjectFile.ready()
if datasetInProject:
internalPath = self.ProjectDataGroup.value + '/' + datasetInfo.datasetId
datasetInProject &= internalPath in self.ProjectFile.value
# If we should find the data in the project file, use a dataset reader
if datasetInProject:
opReader = OpStreamingHdf5Reader(parent=self)
opReader.Hdf5File.setValue(self.ProjectFile.value)
opReader.InternalPath.setValue(internalPath)
providerSlot = opReader.OutputImage
self._opReaders.append(opReader)
else:
# Use a normal (filesystem) reader
opReader = OpInputDataReader(parent=self)
opReader.WorkingDirectory.setValue(self.WorkingDirectory.value)
opReader.FilePath.setValue(datasetInfo.filePath)
providerSlot = opReader.Output
self._opReaders.append(opReader)
# Inject metadata if the dataset info specified any.
if datasetInfo.normalizeDisplay is not None or \
datasetInfo.drange is not None or \
datasetInfo.axistags is not None:
metadata = {}
if datasetInfo.drange is not None:
metadata['drange'] = datasetInfo.drange
if datasetInfo.normalizeDisplay is not None:
metadata['normalizeDisplay'] = datasetInfo.normalizeDisplay
if datasetInfo.axistags is not None:
metadata['axistags'] = datasetInfo.axistags
opMetadataInjector = OpMetadataInjector(parent=self)
opMetadataInjector.Input.connect(providerSlot)
opMetadataInjector.Metadata.setValue(metadata)
providerSlot = opMetadataInjector.Output
self._opReaders.append(opMetadataInjector)
self._NonTransposedImage.connect(providerSlot)
if self.force5d:
op5 = OpReorderAxes(parent=self)
op5.Input.connect(providerSlot)
providerSlot = op5.Output
self._opReaders.append(op5)
# If there is no channel axis, use an OpReorderAxes to append one.
if providerSlot.meta.axistags.index('c') >= len(
providerSlot.meta.axistags):
op5 = OpReorderAxes(parent=self)
providerKeys = "".join(
providerSlot.meta.getTaggedShape().keys())
op5.AxisOrder.setValue(providerKeys + 'c')
op5.Input.connect(providerSlot)
providerSlot = op5.Output
self._opReaders.append(op5)
# Most of workflows can't handle replacement of a dataset of a different dimensionality.
# We guard against that by checking for errors NOW, before connecting our Image output,
# which is connected to the rest of the workflow.
new_axiskeys = "".join(providerSlot.meta.getAxisKeys())
if self._previous_output_axiskeys is not None and len(
new_axiskeys) != len(self._previous_output_axiskeys):
msg = "You can't replace an existing dataset with one of a different dimensionality.\n"\
"Your existing dataset was {}D ({}), but the new dataset is {}D ({}).\n"\
"Your original dataset entry has been reset. "\
"Please remove it and then add your new dataset."\
"".format( len(self._previous_output_axiskeys), self._previous_output_axiskeys,
len(new_axiskeys), new_axiskeys )
raise OpDataSelection.InvalidDimensionalityError(msg)
self._previous_output_axiskeys = new_axiskeys
# Connect our external outputs to the internal operators we chose
self.Image.connect(providerSlot)
# Set the image name and usage flag
self.AllowLabels.setValue(datasetInfo.allowLabels)
imageName = datasetInfo.nickname
if imageName == "":
imageName = datasetInfo.filePath
self.ImageName.setValue(imageName)
except:
self.internalCleanup()
raise
def setupOutputs(self):
self.internalCleanup()
datasetInfo = self.Dataset.value
try:
# Data only comes from the project file if the user said so AND it exists in the project
datasetInProject = (
datasetInfo.location == DatasetInfo.Location.ProjectInternal)
datasetInProject &= self.ProjectFile.ready()
if datasetInProject:
internalPath = self.ProjectDataGroup.value + '/' + datasetInfo.datasetId
datasetInProject &= internalPath in self.ProjectFile.value
# If we should find the data in the project file, use a dataset reader
if datasetInProject:
opReader = OpStreamingHdf5Reader(parent=self)
opReader.Hdf5File.setValue(self.ProjectFile.value)
opReader.InternalPath.setValue(internalPath)
providerSlot = opReader.OutputImage
self._opReaders.append(opReader)
else:
# Use a normal (filesystem) reader
opReader = OpInputDataReader(parent=self)
if datasetInfo.subvolume_roi is not None:
opReader.SubVolumeRoi.setValue(datasetInfo.subvolume_roi)
opReader.WorkingDirectory.setValue(self.WorkingDirectory.value)
opReader.FilePath.setValue(datasetInfo.filePath)
providerSlot = opReader.Output
self._opReaders.append(opReader)
# Inject metadata if the dataset info specified any.
# Also, inject if if dtype is uint8, which we can reasonably assume has drange (0,255)
if datasetInfo.normalizeDisplay is not None or \
datasetInfo.drange is not None or \
datasetInfo.axistags is not None or \
(providerSlot.meta.drange is None and providerSlot.meta.dtype == numpy.uint8):
metadata = {}
if datasetInfo.drange is not None:
metadata['drange'] = datasetInfo.drange
elif providerSlot.meta.dtype == numpy.uint8:
# SPECIAL case for uint8 data: Provide a default drange.
# The user can always override this herself if she wants.
metadata['drange'] = (0, 255)
if datasetInfo.normalizeDisplay is not None:
metadata['normalizeDisplay'] = datasetInfo.normalizeDisplay
if datasetInfo.axistags is not None:
if len(datasetInfo.axistags) != len(
providerSlot.meta.shape):
raise Exception(
"Your dataset's provided axistags ({}) do not have the "
"correct dimensionality for your dataset, which has {} dimensions."
.format(
"".join(tag.key
for tag in datasetInfo.axistags),
len(providerSlot.meta.shape)))
metadata['axistags'] = datasetInfo.axistags
if datasetInfo.subvolume_roi is not None:
metadata['subvolume_roi'] = datasetInfo.subvolume_roi
# FIXME: We are overwriting the axistags metadata to intentionally allow
# the user to change our interpretation of which axis is which.
# That's okay, but technically there's a special corner case if
# the user redefines the channel axis index.
# Technically, it invalidates the meaning of meta.ram_usage_per_requested_pixel.
# For most use-cases, that won't really matter, which is why I'm not worrying about it right now.
opMetadataInjector = OpMetadataInjector(parent=self)
opMetadataInjector.Input.connect(providerSlot)
opMetadataInjector.Metadata.setValue(metadata)
providerSlot = opMetadataInjector.Output
self._opReaders.append(opMetadataInjector)
self._NonTransposedImage.connect(providerSlot)
if self.force5d:
op5 = OpReorderAxes(parent=self)
op5.Input.connect(providerSlot)
providerSlot = op5.Output
self._opReaders.append(op5)
# If the channel axis is not last (or is missing),
# make sure the axes are re-ordered so that channel is last.
if providerSlot.meta.axistags.index('c') != len(
providerSlot.meta.axistags) - 1:
op5 = OpReorderAxes(parent=self)
keys = providerSlot.meta.getTaggedShape().keys()
try:
# Remove if present.
keys.remove('c')
except ValueError:
pass
# Append
keys.append('c')
op5.AxisOrder.setValue("".join(keys))
op5.Input.connect(providerSlot)
providerSlot = op5.Output
self._opReaders.append(op5)
# Connect our external outputs to the internal operators we chose
self.Image.connect(providerSlot)
# Set the image name and usage flag
self.AllowLabels.setValue(datasetInfo.allowLabels)
# If the reading operator provides a nickname, use it.
if self.Image.meta.nickname is not None:
datasetInfo.nickname = self.Image.meta.nickname
imageName = datasetInfo.nickname
if imageName == "":
imageName = datasetInfo.filePath
self.ImageName.setValue(imageName)
except:
self.internalCleanup()
raise
