/usr/share/pyshared/Eikazo/postprocessing/Clean.py is in eikazo 0.5.2-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (c) Abel Deuring 2006 <adeuring@gmx.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"cleaning" filter
"""
import gtk, gobject
from Eikazo.SaneError import SaneError
from Eikazo import Processor, I18n, Config, MeanFilter, Plugins
import procinfo
DEBUG = 1
t = I18n.get_translation('eikazo')
if t:
_ = t.gettext
else:
_ = lambda x: x
N_ = lambda x: x
providers = []
_plugin_info = Plugins.Plugin('Clean', '', 'postprocessing', None)
try:
from Eikazo import MeanFilter
# check, if AdaptiveThresholdFilter is installed.
MeanFilter.fixedThresholdFilter
class AdaptiveThreshold(procinfo.ProcessingProvider,
Config.ConfigAware):
sortpos = (procinfo.BILEVEL, procinfo.BILEVEL, 10)
name = N_("Clean")
connectlabel = N_("Enable Clean Filter")
filterdescription = N_("""\
Clean Filter:
This filter removes "small black dots" in the image.
For each image pixel it counts the number of white and black pixels
in a square area. If the number of black pixels in this area is less
than the threshold, the value of the center pixel becomes "white"
This filter is used only if the input image is in lineart mode
""")
def __init__(self, notify_hub, enabled, config):
procinfo.ProcessingProvider.__init__(self, notify_hub, enabled, config)
Config.ConfigAware.__init__(self, config)
self.averageSize = 2.0
self.threshold = 12
self.build_widget()
self.readConfig()
self.processor = procinfo.ScanJobFilterProcessor(self,
self.processor_input, notify_hub, self.name, self.enabled)
def build_widget(self):
self.widget = gtk.Table(3, 4, homogeneous=False)
w = gtk.Label(_(self.filterdescription))
w.set_alignment(0, 0)
w.set_alignment(0, 0)
self.widget.attach(w, 0, 3, 1, 2, xoptions=gtk.FILL|gtk.EXPAND,
yoptions=gtk.FILL)
w.show()
w = gtk.Label(_('length of averaging square (mm)'))
w.set_alignment(0, 0)
self.widget.attach(w, 0, 1, 2, 3, xoptions=gtk.FILL,
yoptions=gtk.FILL)
w.show()
w = gtk.Label(_('Threshold: Percentage of black pixels'))
w.set_alignment(0, 0)
self.widget.attach(w, 0, 1, 3, 4, xoptions=gtk.FILL,
yoptions=gtk.FILL)
w.show()
self.sizeadj = gtk.Adjustment(self.averageSize, 0, 200, 1, 10, 10)
self.sizeinput = gtk.SpinButton(self.sizeadj)
self.widget.attach(self.sizeinput, 1, 2, 2, 3, xoptions=0,
yoptions=gtk.FILL)
self.sizeinput.show()
self.sizeadj.connect('value-changed', self.cb_size)
self.offsadj = gtk.Adjustment(self.threshold, 0, 100, 1, 10, 10)
self.offsinput = gtk.SpinButton(self.offsadj)
self.widget.attach(self.offsinput, 1, 2, 3, 4, xoptions=0,
yoptions=gtk.FILL)
self.offsinput.show()
self.offsadj.connect('value-changed', self.cb_offset)
w = gtk.Label('')
self.widget.attach(w, 2, 3, 1, 2, xoptions=gtk.FILL|gtk.EXPAND,
yoptions=gtk.FILL)
w.show()
def cb_size(self, adj):
self.averageSize = adj.get_value()
def cb_offset(self, adj):
self.threshold = adj.get_value()
def filter(self, job):
img = job.img
mode = img.mode
if mode != '1':
return
len = self.averageSize * job.resolution / 25.4
len = int(len) | 1
thrsh = int(len*len * self.threshold / 100)
job.img = MeanFilter.fixedThresholdFilter(img, len, thrsh)
def readConfig(self):
procinfo.ProcessingProvider.readConfig(self)
val = self.config.getfloat('postprocessing', 'clean-size')
if val != None:
self.averageSize = val
self.sizeadj.set_value(val)
val = self.config.getfloat('postprocessing', 'clean-threshold')
if val != None:
self.threshold = val
self.offsadj.set_value(val)
def writeConfig(self):
procinfo.ProcessingProvider.writeConfig(self)
self.config.set('postprocessing', 'clean-size',
str(self.averageSize))
self.config.set('postprocessing', 'clean-threshold',
str(self.threshold))
providers.append(AdaptiveThreshold)
except AttributeError, val:
if str(val) == "'module' object has no attribute 'fixedThresholdFilter'":
print "warning: could not create threshold module. The PIL module"
print " ImageFilter has no class AdaptiveThresholdFilter"
_plugin_info.error = 'Could not find module MeanFilter'
def register():
return providers
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