def test_textline_reading_order():
from gamera.core import load_image, init_gamera
init_gamera()
from gamera.plugins.pagesegmentation import textline_reading_order
correct_orders = {
"data/reading_order_2.png":
[(42, 40, 1462, 114), (42, 158, 683, 232), (42, 276, 683, 350),
(42, 418, 683, 492), (42, 560, 683, 633), (822, 158, 1462, 633),
(42, 701, 1462, 775), (42, 843, 494, 917), (562, 843, 1132, 917),
(42, 985, 683, 1059), (822, 985, 1132, 1059),
(1200, 843, 1462, 1059)],
"data/reading_order.png": [(51, 56, 1471, 130), (51, 174, 691, 248),
(51, 292, 691, 366), (51, 434, 691, 508),
(51, 576, 691, 649), (830, 174, 1471, 508),
(830, 576, 1471, 649), (51, 717, 1471, 791),
(51, 859, 691, 933), (51, 1001, 691, 1075),
(830, 859, 1471, 933),
(830, 1001, 1471, 1075)]
}
for file, correct in list(correct_orders.items()):
img = load_image(file)
ccs = img.cc_analysis()
ro = textline_reading_order(ccs)
result = [(a.ul_x, a.ul_y, a.lr_x, a.lr_y) for a in ro]
assert result == correct
del ro
del ccs
del img
def test_textline_reading_order():
from gamera.plugins.pagesegmentation import textline_reading_order
correct_orders = {"data/reading_order_2.png": [(42, 40, 1462, 114), (42, 158, 683, 232), (42, 276, 683, 350), (42, 418, 683, 492), (42, 560, 683, 633), (822, 158, 1462, 633), (42, 701, 1462, 775), (42, 843, 494, 917), (562, 843, 1132, 917), (42, 985, 683, 1059), (822, 985, 1132, 1059), (1200, 843, 1462, 1059)],
"data/reading_order.png": [(51, 56, 1471, 130), (51, 174, 691, 248), (51, 292, 691, 366), (51, 434, 691, 508), (51, 576, 691, 649), (830, 174, 1471, 508), (830, 576, 1471, 649), (51, 717, 1471, 791), (51, 859, 691, 933), (51, 1001, 691, 1075), (830, 859, 1471, 933), (830, 1001, 1471, 1075)]
}
for file, correct in correct_orders.items():
img = load_image(file)
ccs = img.cc_analysis()
ro = textline_reading_order(ccs)
result = [(a.ul_x, a.ul_y, a.lr_x, a.lr_y) for a in ro]
assert result == correct
del ro
del ccs
del img
def sort_glyphs(self):
self.glyphs = textline_reading_order(self.glyphs)
# begin calculating threshold for word-spacing
spacelist = []
for i in range(len(self.glyphs) - 1):
spacelist.append(self.glyphs[i + 1].ul_x - self.glyphs[i].lr_x)
if len(spacelist) > 0:
threshold = median(spacelist)
threshold = threshold * 2.0
else:
threshold = 0
# end calculatin threshold for word-spacing
self.words = chars_make_words(self.glyphs, threshold)
def sort_glyphs(self):
self.glyphs = textline_reading_order(self.glyphs)
#begin calculating threshold for word-spacing
spacelist = []
for i in range(len(self.glyphs) - 1):
spacelist.append(self.glyphs[i + 1].ul_x - self.glyphs[i].lr_x)
if(len(spacelist) > 0):
threshold = median(spacelist)
threshold = threshold * 2.0
else:
threshold = 0
#end calculatin threshold for word-spacing
self.words = chars_make_words(self.glyphs, threshold)
def get_line_glyphs(self,image,textlines):
i=0
show = []
lines = []
ret,sub_ccs = image.sub_cc_analysis(textlines)
#print "doc has %d lines" % len(sub_ccs)
linenumber = 0
for ccs in sub_ccs:
linenumber = linenumber + 1
#print "line %d" % linenumber
line_bbox = Rect(textlines[i])
i = i + 1
glyphs = ccs[:]
newlist = []
remove = []
add = []
result = []
glyphs.sort(lambda x,y: cmp(x.ul_x, y.ul_x))
#print "first run"
for position, item in enumerate(glyphs):
olditem = item
left = max(0,position - 5)
right = min(position + 5, len(glyphs))
checklist = glyphs[left:right]
for glyph in checklist:
if(item == glyph):
continue
result = self.check_glyph_greek_accent(item,glyph)
if(len(result[0]) > 0): #something has been joind...
item = result[0][0]
#add.append(result[0][0]) #joind glyph
remove.append(result[1][0]) #first part of joind one
remove.append(result[1][1]) #second part of joind one
if olditem != item:
add.append(item)
for elem in remove:
if(elem in glyphs):
glyphs.remove(elem)
for elem in add:
glyphs.append(elem)
remove = []
add = []
glyphs = textline_reading_order(glyphs)
glyphs = list(set(glyphs))
#print len(glyphs)
new_line = WholisticTextline(line_bbox)
final = []
if(len(glyphs) > 0):
for glyph in glyphs:
final.append(glyph)
new_line.add_glyphs(final,False)
#new_line.sort_glyphs() #reading order -- from left to right
lines.append(new_line)
for glyph in glyphs:
show.append(glyph)
return lines
def get_line_glyphs(self, image, textlines):
i = 0
show = []
lines = []
ret, sub_ccs = image.sub_cc_analysis(textlines)
# print "doc has %d lines" % len(sub_ccs)
linenumber = 0
for ccs in sub_ccs:
linenumber = linenumber + 1
# print "line %d" % linenumber
line_bbox = Rect(textlines[i])
i = i + 1
glyphs = ccs[:]
newlist = []
remove = []
add = []
result = []
glyphs.sort(lambda x, y: cmp(x.ul_x, y.ul_x))
# print "first run"
for position, item in enumerate(glyphs):
olditem = item
left = max(0, position - 5)
right = min(position + 5, len(glyphs))
checklist = glyphs[left:right]
for glyph in checklist:
if item == glyph:
continue
result = self.check_glyph_greek_accent(item, glyph)
if len(result[0]) > 0: # something has been joind...
item = result[0][0]
# add.append(result[0][0]) #joind glyph
remove.append(result[1][0]) # first part of joind one
remove.append(result[1][1]) # second part of joind one
if olditem != item:
add.append(item)
for elem in remove:
if elem in glyphs:
glyphs.remove(elem)
for elem in add:
glyphs.append(elem)
remove = []
add = []
glyphs = textline_reading_order(glyphs)
glyphs = list(set(glyphs))
# print len(glyphs)
new_line = WholisticTextline(line_bbox)
final = []
if len(glyphs) > 0:
for glyph in glyphs:
final.append(glyph)
new_line.add_glyphs(final, False)
# new_line.sort_glyphs() #reading order -- from left to right
lines.append(new_line)
for glyph in glyphs:
show.append(glyph)
return lines