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Adjust reading order when there are no columns #190

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Adjust reading order when there are no columns #190

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4 changes: 2 additions & 2 deletions ocrolib/psegutils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -121,7 +121,7 @@ def extract_masked(image,linedesc,pad=5,expand=0):
line = where(mask,line,amax(line))
return line

def reading_order(lines,highlight=None,debug=0):
def reading_order(lines,nocolumns=False,highlight=None,debug=0):
"""Given the list of lines (a list of 2D slices), computes
the partial reading order. The output is a binary 2D array
such that order[i,j] is true if line i comes before line j
Expand All @@ -141,7 +141,7 @@ def separates(w,u,v):
clf(); title("highlight"); imshow(binary); ginput(1,debug)
for i,u in enumerate(lines):
for j,v in enumerate(lines):
if x_overlaps(u,v):
if x_overlaps(u,v) or nocolumns:
if above(u,v):
order[i,j] = 1
else:
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5 changes: 4 additions & 1 deletion ocropus-gpageseg
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Original file line number Diff line number Diff line change
Expand Up @@ -388,7 +388,10 @@ def process1(job):

if not args.quiet: print_info("finding reading order")
lines = psegutils.compute_lines(segmentation,scale)
order = psegutils.reading_order([l.bounds for l in lines])
if args.maxcolseps>0 or args.blackseps:
order = psegutils.reading_order([l.bounds for l in lines])
else:
order = psegutils.reading_order([l.bounds for l in lines], nocolumns=True)
lsort = psegutils.topsort(order)

# renumber the labels so that they conform to the specs
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