def __init__(self, parent=None):
super(LevelsHistogram, self).__init__(parent=parent,
title="",
section="histogram")
self.antialiased = False
# a dict of dict : plot -> selected items -> HistogramItem
self._tracked_items = {}
self.curveparam = CurveParam(_("Curve"), icon="curve.png")
self.curveparam.read_config(CONF, "histogram", "curve")
self.histparam = HistogramParam(_("Histogram"), icon="histogram.png")
self.histparam.logscale = False
self.histparam.n_bins = 256
self.range = XRangeSelection(0, 1)
self.range_mono_color = self.range.shapeparam.sel_line.color
self.range_multi_color = CONF.get("histogram", "range/multi/color",
"red")
self.add_item(self.range, z=5)
self.SIG_RANGE_CHANGED.connect(self.range_changed)
self.set_active_item(self.range)
self.setMinimumHeight(80)
self.setAxisMaxMajor(self.Y_LEFT, 5)
self.setAxisMaxMinor(self.Y_LEFT, 0)
if parent is None:
self.set_axis_title("bottom", "Levels")
def __init__(self, parent=None):
super(LevelsHistogram, self).__init__(parent=parent, title="",
section="histogram")
self.antialiased = False
# a dict of dict : plot -> selected items -> HistogramItem
self._tracked_items = {}
self.curveparam = CurveParam(_("Curve"), icon="curve.png")
self.curveparam.read_config(CONF, "histogram", "curve")
self.histparam = HistogramParam(_("Histogram"), icon="histogram.png")
self.histparam.logscale = False
self.histparam.n_bins = 256
self.range = XRangeSelection(0, 1)
self.range_mono_color = self.range.shapeparam.sel_line.color
self.range_multi_color = CONF.get("histogram",
"range/multi/color", "red")
self.add_item(self.range, z=5)
self.connect(self, SIG_RANGE_CHANGED, self.range_changed)
self.set_active_item(self.range)
self.setMinimumHeight(80)
self.setAxisMaxMajor(self.Y_LEFT, 5)
self.setAxisMaxMinor(self.Y_LEFT, 0)
if parent is None:
self.set_axis_title('bottom', 'Levels')
def __init__(self, min_, max_):
XRangeSelection.__init__(self, min_, max_)
self._can_move = False # moving entire shape disabled, but handles are still movable
# we have to trick a bit because pyqtSignal must be attributes of a derived class of
# QObject and adding QObject as an additional base class does not work somehow:
self._x = SnappingRangeSelection._X()
self.SELECTED_RANGE_CHANGED = self._x.SELECTED_RANGE_CHANGED
p = self.shapeparam
p.fill = "#aaaaaa"
p.line.color = "#888888"
p.sel_line.color = "#888888"
p.symbol.color = "gray"
p.symbol.facecolor = "gray"
p.symbol.alpha = 0.5
p.sel_symbol.color = "gray"
p.sel_symbol.facecolor = "gray"
p.sel_symbol.alpha = 0.5
p.sel_symbol.size = 8
p.symbol.size = 8
p.update_range(self)
def __init__(self, min_, max_):
XRangeSelection.__init__(self, min_, max_)
self._can_move = False # moving entire shape disabled, but handles are still movable
# we have to trick a bit because pyqtSignal must be attributes of a derived class of
# QObject and adding QObject as an additional base class does not work somehow:
self._x = SnappingRangeSelection._X()
self.SELECTED_RANGE_CHANGED = self._x.SELECTED_RANGE_CHANGED
p = self.shapeparam
p.fill = "#aaaaaa"
p.line.color = "#888888"
p.sel_line.color = "#888888"
p.symbol.color = "gray"
p.symbol.facecolor = "gray"
p.symbol.alpha = 0.5
p.sel_symbol.color = "gray"
p.sel_symbol.facecolor = "gray"
p.sel_symbol.alpha = 0.5
p.sel_symbol.size = 8
p.symbol.size = 8
p.update_range(self)
class LevelsHistogram(CurvePlot):
"""Image levels histogram widget"""
#: Signal emitted by LevelsHistogram when LUT range was changed
SIG_VOI_CHANGED = Signal()
def __init__(self, parent=None):
super(LevelsHistogram, self).__init__(parent=parent,
title="",
section="histogram")
self.antialiased = False
# a dict of dict : plot -> selected items -> HistogramItem
self._tracked_items = {}
self.curveparam = CurveParam(_("Curve"), icon="curve.png")
self.curveparam.read_config(CONF, "histogram", "curve")
self.histparam = HistogramParam(_("Histogram"), icon="histogram.png")
self.histparam.logscale = False
self.histparam.n_bins = 256
self.range = XRangeSelection(0, 1)
self.range_mono_color = self.range.shapeparam.sel_line.color
self.range_multi_color = CONF.get("histogram", "range/multi/color",
"red")
self.add_item(self.range, z=5)
self.SIG_RANGE_CHANGED.connect(self.range_changed)
self.set_active_item(self.range)
self.setMinimumHeight(80)
self.setAxisMaxMajor(self.Y_LEFT, 5)
self.setAxisMaxMinor(self.Y_LEFT, 0)
if parent is None:
self.set_axis_title("bottom", "Levels")
def connect_plot(self, plot):
if not isinstance(plot, ImagePlot):
# Connecting only to image plot widgets (allow mixing image and
# curve widgets for the same plot manager -- e.g. in pyplot)
return
self.SIG_VOI_CHANGED.connect(plot.notify_colormap_changed)
plot.SIG_ITEM_SELECTION_CHANGED.connect(self.selection_changed)
plot.SIG_ITEM_REMOVED.connect(self.item_removed)
plot.SIG_ACTIVE_ITEM_CHANGED.connect(self.active_item_changed)
def tracked_items_gen(self):
for plot, items in list(self._tracked_items.items()):
for item in list(items.items()):
yield item # tuple item,curve
def __del_known_items(self, known_items, items):
del_curves = []
for item in list(known_items.keys()):
if item not in items:
curve = known_items.pop(item)
del_curves.append(curve)
self.del_items(del_curves)
def selection_changed(self, plot):
items = plot.get_selected_items(item_type=IVoiImageItemType)
known_items = self._tracked_items.setdefault(plot, {})
if items:
self.__del_known_items(known_items, items)
if len(items) == 1:
# Removing any cached item for other plots
for other_plot, _items in list(self._tracked_items.items()):
if other_plot is not plot:
if not other_plot.get_selected_items(
item_type=IVoiImageItemType):
other_known_items = self._tracked_items[other_plot]
self.__del_known_items(other_known_items, [])
else:
# if all items are deselected we keep the last known
# selection (for one plot only)
for other_plot, _items in list(self._tracked_items.items()):
if other_plot.get_selected_items(item_type=IVoiImageItemType):
self.__del_known_items(known_items, [])
break
for item in items:
if item not in known_items:
curve = HistogramItem(self.curveparam, self.histparam)
curve.set_hist_source(item)
self.add_item(curve, z=0)
known_items[item] = curve
nb_selected = len(list(self.tracked_items_gen()))
if not nb_selected:
self.replot()
return
self.curveparam.shade = 1.0 / nb_selected
for item, curve in self.tracked_items_gen():
self.curveparam.update_curve(curve)
self.histparam.update_hist(curve)
self.active_item_changed(plot)
# Rescaling histogram plot axes for better visibility
ymax = None
for item in known_items:
curve = known_items[item]
_x, y = curve.get_data()
ymax0 = y.mean() + 3 * y.std()
if ymax is None or ymax0 > ymax:
ymax = ymax0
ymin, _ymax = self.get_axis_limits("left")
if ymax is not None:
self.set_axis_limits("left", ymin, ymax)
self.replot()
def item_removed(self, item):
for plot, items in list(self._tracked_items.items()):
if item in items:
curve = items.pop(item)
self.del_items([curve])
self.replot()
break
def active_item_changed(self, plot):
items = plot.get_selected_items(item_type=IVoiImageItemType)
if not items:
# XXX: workaround
return
active = plot.get_last_active_item(IVoiImageItemType)
if active:
active_range = active.get_lut_range()
else:
active_range = None
multiple_ranges = False
for item, curve in self.tracked_items_gen():
if active_range != item.get_lut_range():
multiple_ranges = True
if active_range is not None:
_m, _M = active_range
self.set_range_style(multiple_ranges)
self.range.set_range(_m, _M, dosignal=False)
self.replot()
def set_range_style(self, multiple_ranges):
if multiple_ranges:
self.range.shapeparam.sel_line.color = self.range_multi_color
else:
self.range.shapeparam.sel_line.color = self.range_mono_color
self.range.shapeparam.update_range(self.range)
def set_range(self, _min, _max):
if _min < _max:
self.set_range_style(False)
self.range.set_range(_min, _max)
self.replot()
return True
else:
# Range was not changed
return False
def range_changed(self, _rangesel, _min, _max):
for item, curve in self.tracked_items_gen():
item.set_lut_range([_min, _max])
self.SIG_VOI_CHANGED.emit()
def set_full_range(self):
"""Set range bounds to image min/max levels"""
_min = _max = None
for item, curve in self.tracked_items_gen():
imin, imax = item.get_lut_range_full()
if _min is None or _min > imin:
_min = imin
if _max is None or _max < imax:
_max = imax
if _min is not None:
self.set_range(_min, _max)
def apply_min_func(self, item, curve, min):
_min, _max = item.get_lut_range()
return min, _max
def apply_max_func(self, item, curve, max):
_min, _max = item.get_lut_range()
return _min, max
def reduce_range_func(self, item, curve, percent):
return lut_range_threshold(item, curve.bins, percent)
def apply_range_function(self, func, *args, **kwargs):
item = None
for item, curve in self.tracked_items_gen():
_min, _max = func(item, curve, *args, **kwargs)
item.set_lut_range([_min, _max])
self.SIG_VOI_CHANGED.emit()
if item is not None:
self.active_item_changed(item.plot())
def eliminate_outliers(self, percent):
"""
Eliminate outliers:
eliminate percent/2*N counts on each side of the histogram
(where N is the total count number)
"""
self.apply_range_function(self.reduce_range_func, percent)
def set_min(self, _min):
self.apply_range_function(self.apply_min_func, _min)
def set_max(self, _max):
self.apply_range_function(self.apply_max_func, _max)
class LevelsHistogram(CurvePlot):
"""Image levels histogram widget"""
def __init__(self, parent=None):
super(LevelsHistogram, self).__init__(parent=parent, title="",
section="histogram")
self.antialiased = False
# a dict of dict : plot -> selected items -> HistogramItem
self._tracked_items = {}
self.curveparam = CurveParam(_("Curve"), icon="curve.png")
self.curveparam.read_config(CONF, "histogram", "curve")
self.histparam = HistogramParam(_("Histogram"), icon="histogram.png")
self.histparam.logscale = False
self.histparam.n_bins = 256
self.range = XRangeSelection(0, 1)
self.range_mono_color = self.range.shapeparam.sel_line.color
self.range_multi_color = CONF.get("histogram",
"range/multi/color", "red")
self.add_item(self.range, z=5)
self.connect(self, SIG_RANGE_CHANGED, self.range_changed)
self.set_active_item(self.range)
self.setMinimumHeight(80)
self.setAxisMaxMajor(self.Y_LEFT, 5)
self.setAxisMaxMinor(self.Y_LEFT, 0)
if parent is None:
self.set_axis_title('bottom', 'Levels')
def connect_plot(self, plot):
if not isinstance(plot, ImagePlot):
# Connecting only to image plot widgets (allow mixing image and
# curve widgets for the same plot manager -- e.g. in pyplot)
return
self.connect(self, SIG_VOI_CHANGED, plot.notify_colormap_changed)
self.connect(plot, SIG_ITEM_SELECTION_CHANGED, self.selection_changed)
self.connect(plot, SIG_ITEM_REMOVED, self.item_removed)
self.connect(plot, SIG_ACTIVE_ITEM_CHANGED, self.active_item_changed)
def tracked_items_gen(self):
for plot, items in list(self._tracked_items.items()):
for item in list(items.items()):
yield item # tuple item,curve
def __del_known_items(self, known_items, items):
del_curves = []
for item in list(known_items.keys()):
if item not in items:
curve = known_items.pop(item)
del_curves.append(curve)
self.del_items(del_curves)
def selection_changed(self, plot):
items = plot.get_selected_items(item_type=IVoiImageItemType)
known_items = self._tracked_items.setdefault(plot, {})
if items:
self.__del_known_items(known_items, items)
if len(items) == 1:
# Removing any cached item for other plots
for other_plot, _items in list(self._tracked_items.items()):
if other_plot is not plot:
if not other_plot.get_selected_items(
item_type=IVoiImageItemType):
other_known_items = self._tracked_items[other_plot]
self.__del_known_items(other_known_items, [])
else:
# if all items are deselected we keep the last known
# selection (for one plot only)
for other_plot, _items in list(self._tracked_items.items()):
if other_plot.get_selected_items(item_type=IVoiImageItemType):
self.__del_known_items(known_items, [])
break
for item in items:
if item not in known_items:
curve = HistogramItem(self.curveparam, self.histparam)
curve.set_hist_source(item)
self.add_item(curve, z=0)
known_items[item] = curve
nb_selected = len(list(self.tracked_items_gen()))
if not nb_selected:
self.replot()
return
self.curveparam.shade = 1.0/nb_selected
for item, curve in self.tracked_items_gen():
self.curveparam.update_curve(curve)
self.histparam.update_hist(curve)
self.active_item_changed(plot)
# Rescaling histogram plot axes for better visibility
ymax = None
for item in known_items:
curve = known_items[item]
_x, y = curve.get_data()
ymax0 = y.mean()+3*y.std()
if ymax is None or ymax0 > ymax:
ymax = ymax0
ymin, _ymax = self.get_axis_limits("left")
if ymax is not None:
self.set_axis_limits("left", ymin, ymax)
self.replot()
def item_removed(self, item):
for plot, items in list(self._tracked_items.items()):
if item in items:
items.pop(item)
break
def active_item_changed(self, plot):
items = plot.get_selected_items(item_type=IVoiImageItemType)
if not items:
#XXX: workaround
return
active = plot.get_last_active_item(IVoiImageItemType)
if active:
active_range = active.get_lut_range()
else:
active_range = None
multiple_ranges = False
for item, curve in self.tracked_items_gen():
if active_range != item.get_lut_range():
multiple_ranges = True
if active_range is not None:
_m, _M = active_range
self.set_range_style(multiple_ranges)
self.range.set_range(_m, _M, dosignal=False)
self.replot()
def set_range_style(self, multiple_ranges):
if multiple_ranges:
self.range.shapeparam.sel_line.color = self.range_multi_color
else:
self.range.shapeparam.sel_line.color = self.range_mono_color
self.range.shapeparam.update_range(self.range)
def set_range(self, _min, _max):
if _min < _max:
self.set_range_style(False)
self.range.set_range(_min, _max)
self.replot()
return True
else:
# Range was not changed
return False
def range_changed(self, _rangesel, _min, _max):
for item, curve in self.tracked_items_gen():
item.set_lut_range([_min, _max])
self.emit(SIG_VOI_CHANGED)
def set_full_range(self):
"""Set range bounds to image min/max levels"""
_min = _max = None
for item, curve in self.tracked_items_gen():
imin, imax = item.get_lut_range_full()
if _min is None or _min>imin:
_min = imin
if _max is None or _max<imax:
_max = imax
if _min is not None:
self.set_range(_min, _max)
def apply_min_func(self, item, curve, min):
_min, _max = item.get_lut_range()
return min, _max
def apply_max_func(self, item, curve, max):
_min, _max = item.get_lut_range()
return _min, max
def reduce_range_func(self, item, curve, percent):
return lut_range_threshold(item, curve.bins, percent)
def apply_range_function(self, func, *args, **kwargs):
item = None
for item, curve in self.tracked_items_gen():
_min, _max = func(item, curve, *args, **kwargs)
item.set_lut_range([_min, _max])
self.emit(SIG_VOI_CHANGED)
if item is not None:
self.active_item_changed(item.plot())
def eliminate_outliers(self, percent):
"""
Eliminate outliers:
eliminate percent/2*N counts on each side of the histogram
(where N is the total count number)
"""
self.apply_range_function(self.reduce_range_func, percent)
def set_min(self, _min):
self.apply_range_function(self.apply_min_func, _min)
def set_max(self, _max):
self.apply_range_function(self.apply_max_func, _max)
def range(self, xmin, xmax):
return XRangeSelection(xmin, xmax)
def create_shape(self):
return XRangeSelection(0, 0)
def create_shape(self):
self.label = None
return XRangeSelection(0, 0)
def create_shape(self):
from guiqwt.shapes import XRangeSelection
return XRangeSelection(0, 0)
