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color_interaction.py
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color_interaction.py
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# -*- coding: utf-8 -*-
"""
@brief color_interaction
This program is free software under the GNU General Public License
(>=v2). Read the file COPYING that comes with GRASS for details.
@author: Anna Petrasova (akratoc@ncsu.edu)
"""
import wx
from gui_core.gselect import Select
import grass.script as gscript
from grass.pydispatch.signal import Signal
from grass.exceptions import CalledModuleError
from tangible_utils import get_environment
class ColorInteractionPanel(wx.Panel):
def __init__(self, parent, giface, settings, scaniface):
wx.Panel.__init__(self, parent)
self.group = None
self.segment = "segment"
self.segment_clump = "segment_clump"
self.signature = "signature"
self.classification = "classification"
self.filtered_classification = "fclassification"
self.reject = "reject"
self.output = "objects"
self.hasSuperpixels = gscript.find_program("i.superpixels.slic", "--help")
self.env = None
self.giface = giface
self.parent = parent
self.settings = settings
self.scaniface = scaniface
self.settingsChanged = Signal("ColorInteractionPanel.settingsChanged")
if "color" not in self.settings:
self.settings["color"] = {}
self.settings["color"]["active"] = False
self.settings["color"]["name"] = ""
self.settings["color"]["training"] = ""
self.hide = []
self.ifColor = wx.CheckBox(self, label=_("Save color rasters:"))
self.ifColor.SetValue(self.settings["color"]["active"])
self.ifColor.Bind(wx.EVT_CHECKBOX, self.OnChange)
self.exportColor = Select(self, size=(-1, -1), type="raster")
self.exportColor.SetValue(self.settings["color"]["name"])
self.exportColor.Bind(wx.EVT_TEXT, self.OnChange)
self.hide.append(self.exportColor)
if self.settings["color"]["name"]:
self.group = self.settings["color"]["name"]
self.trainingAreas = Select(self, size=(-1, -1), type="raster")
self.trainingAreas.SetValue(self.settings["color"]["training"])
self.trainingAreas.Bind(wx.EVT_TEXT, self.OnChange)
labelTraining = wx.StaticText(self, label=_("Training areas:"))
self.hide.append(self.trainingAreas)
self.hide.append(labelTraining)
calibrateBtn = wx.Button(self, label=_("Calibrate"))
calibrateBtn.Bind(wx.EVT_BUTTON, self.OnCalibration)
self.hide.append(calibrateBtn)
analyzeBtn = wx.Button(self, label=_("Scan and process"))
analyzeBtn.Bind(wx.EVT_BUTTON, self.OnAnalysis)
self.hide.append(analyzeBtn)
self.mainSizer = wx.BoxSizer(wx.VERTICAL)
sizer = wx.BoxSizer(wx.HORIZONTAL)
sizer.Add(self.ifColor, flag=wx.ALIGN_CENTER_VERTICAL, border=5)
sizer.Add(
self.exportColor, proportion=1, flag=wx.ALIGN_CENTER_VERTICAL, border=5
)
self.mainSizer.Add(sizer, flag=wx.EXPAND | wx.ALL, border=5)
sizer = wx.BoxSizer(wx.HORIZONTAL)
sizer.Add(labelTraining, flag=wx.ALIGN_CENTER_VERTICAL, border=5)
sizer.Add(
self.trainingAreas, proportion=1, flag=wx.ALIGN_CENTER_VERTICAL, border=5
)
sizer.Add(calibrateBtn, flag=wx.ALIGN_CENTER_VERTICAL, border=5)
self.mainSizer.Add(sizer, flag=wx.EXPAND | wx.ALL, border=5)
sizer = wx.BoxSizer(wx.HORIZONTAL)
sizer.AddStretchSpacer()
sizer.Add(analyzeBtn, flag=wx.ALIGN_CENTER_VERTICAL, border=5)
self.mainSizer.Add(sizer, flag=wx.EXPAND | wx.ALL, border=5)
self.SetSizer(self.mainSizer)
self.mainSizer.Fit(self)
self._enable()
def OnChange(self, event):
self.settings["color"]["training"] = self.trainingAreas.GetValue()
self.settings["color"]["active"] = self.ifColor.IsChecked()
self.settings["color"]["name"] = self.exportColor.GetValue()
self.group = self.settings["color"]["name"]
self._enable()
def _enable(self):
for each in self.hide:
each.Enable(self.ifColor.IsChecked())
def _defineEnvironment(self):
try:
gscript.read_command(
"i.group",
flags="g",
group=self.group,
subgroup=self.group,
env=self.env,
)
except CalledModuleError:
gscript.run_command(
"i.group",
group=self.group,
subgroup=self.group,
input=[self.group + "_" + ext for ext in ("r", "g", "b")],
env=self.env,
)
maps = gscript.read_command(
"i.group", flags="g", group=self.group, subgroup=self.group
).strip()
if maps:
self.env = get_environment(raster=maps.splitlines()[0])
def OnAnalysis(self, event):
self._defineEnvironment()
self.Run(self.Analyze)
def OnCalibration(self, event):
self._defineEnvironment()
training = self.trainingAreas.GetValue()
if not training:
return
self.Run(self.Calibrate)
def Run(self, func):
ll = self.giface.GetLayerList()
checked = []
for l in ll:
if ll.IsLayerChecked(l):
checked.append(l.cmd)
ll.CheckLayer(l, False)
wx.Yield()
if not self.scaniface.IsScanning():
self.scaniface.Scan(continuous=False)
self.scaniface.process.wait()
self.scaniface.process = None
self.scaniface.status.SetLabel("Done.")
self.Done(func, checked)
elif self.scaniface.pause:
pass
else:
wx.CallLater(3000, self.Done, func, checked)
def Done(self, func, checked):
func()
ll = self.giface.GetLayerList()
for l in ll:
if l.cmd in checked:
ll.CheckLayer(l, True)
def Calibrate(self):
gscript.run_command(
"i.gensigset",
trainingmap=self.settings["color"]["training"],
group=self.group,
subgroup=self.group,
signaturefile=self.signature,
env=self.env,
overwrite=True,
) # we need here overwrite=True
def Analyze(self):
if self.hasSuperpixels:
gscript.run_command(
"i.superpixels.slic",
group=self.group,
output=self.segment,
compactness=2,
minsize=50,
env=self.env,
)
else:
gscript.run_command(
"i.segment",
group=self.group,
output=self.segment,
threshold=0.3,
minsize=50,
env=self.env,
)
gscript.run_command(
"r.clump", input=self.segment, output=self.segment_clump, env=self.env
)
gscript.run_command(
"i.smap",
group=self.group,
subgroup=self.group,
signaturefile=self.signature,
output=self.classification,
goodness=self.reject,
env=self.env,
)
percentile = float(
gscript.parse_command(
"r.univar", flags="ge", map=self.reject, env=self.env
)["percentile_90"]
)
gscript.mapcalc(
"{new} = if({classif} < {thres}, {classif}, null())".format(
new=self.filtered_classification,
classif=self.classification,
thres=percentile,
),
env=self.env,
)
segments = self.segment if self.hasSuperpixels else self.segment_clump
gscript.run_command(
"r.stats.quantile",
base=segments,
cover=self.filtered_classification,
output=self.output,
env=self.env,
)