qurator-spk/sbb_binarization
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Code Issues Releases Wiki Activity

implement region/line binarization

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This commit is contained in:
Konstantin Baierer 2020-10-15 16:55:17 +02:00
parent 5909f94fab
commit ee26ebd7d8
2 changed files with 55 additions and 15 deletions
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2
sbb_binarize/ocrd-tool.json
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@ -14,7 +14,7 @@
"type": "string", "type": "string",
"enum": ["page", "region", "line"], "enum": ["page", "region", "line"],
"default": "page", "default": "page",
"description": "PAGE XML hierarchy level to operate on (currently only page supported" "description": "PAGE XML hierarchy level to operate on"
}, },
"patches": { "patches": {
"description": "by setting this parameter to true you let the model to see the image in patches.", "description": "by setting this parameter to true you let the model to see the image in patches.",

68
sbb_binarize/ocrd_cli.py
View file

@ -1,3 +1,5 @@
# TODO: AlternativeImage 'binarized' comment should be additive
import os.path import os.path
from pkg_resources import resource_string from pkg_resources import resource_string
from json import loads from json import loads
@ -9,13 +11,7 @@ from ocrd_utils import (
MIMETYPE_PAGE MIMETYPE_PAGE
) )
from ocrd_modelfactory import page_from_file from ocrd_modelfactory import page_from_file
from ocrd_models.ocrd_page import ( from ocrd_models.ocrd_page import AlternativeImageType, to_xml
MetadataItemType,
LabelsType, LabelType,
AlternativeImageType,
TextRegionType,
to_xml
)
from ocrd import Processor from ocrd import Processor
from .sbb_binarize import SbbBinarizer from .sbb_binarize import SbbBinarizer
@ -48,24 +44,68 @@ class SbbBinarizeProcessor(Processor):
LOG.info("INPUT FILE %i / %s", n, page_id) LOG.info("INPUT FILE %i / %s", n, page_id)
pcgts = page_from_file(self.workspace.download_file(input_file)) pcgts = page_from_file(self.workspace.download_file(input_file))
self.add_metadata(pcgts) self.add_metadata(pcgts)
pcgts.set_pcGtsId(file_id)
page = pcgts.get_Page() page = pcgts.get_Page()
if oplevel == 'page': if oplevel == 'page':
LOG.info("Binarizing on 'page' level in page '%s'", page_id) LOG.info("Binarizing on 'page' level in page '%s'", page_id)
page_image, page_xywh, _ = self.workspace.image_from_page(page, page_id) page_image, page_xywh, _ = self.workspace.image_from_page(page, page_id)
binarizer = SbbBinarizer(image=page_image, model=model_path, patches=use_patches, save=None) bin_image = SbbBinarizer(
bin_image = binarizer.run() image=page_image,
model=model_path,
patches=use_patches,
save=None
).run()
# update METS (add the image file): # update METS (add the image file):
bin_image_path = self.workspace.save_image_file(bin_image, bin_image_path = self.workspace.save_image_file(bin_image,
file_id + '.IMG-BIN', file_id + '.IMG-BIN',
page_id=page_id, page_id=page_id,
file_grp=self.output_file_grp) file_grp=self.output_file_grp)
page.add_AlternativeImage(filename=bin_image_path, comment="binarized") page.add_AlternativeImage(AlternativeImageType(filename=bin_image_path, comment="binarized"))
else:
raise NotImplementedError("Binarization below page level not implemented yet") else:
regions = page.get_AllRegions(['Text', 'Table'])
if not regions:
LOG.warning("Page '%s' contains no text/table regions", page_id)
for region in regions:
region_image, region_xywh = self.workspace.image_from_segment(region, page_image, page_xywh)
if oplevel == 'region':
region_image_bin = SbbBinarizer(
image=region_image,
model=model_path,
patches=use_patches,
save=None
).run()
region_image_bin_path = self.workspace.save_image_file(
region_image_bin,
"%s_%s.IMG-BIN" % (file_id, region.id),
page_id=page_id,
file_grp=self.output_file_grp)
region.add_AlternativeImage(
AlternativeImageType(filename=region_image_bin_path, comments='binarized'))
elif oplevel == 'line':
lines = region.get_TextLine()
if not lines:
LOG.warning("Page '%s' region '%s' contains no text lines", page_id, region.id)
for line in lines:
line_image, line_xywh = self.workspace.image_from_segment(line, page_image, page_xywh)
line_image_bin = SbbBinarizer(
image=line_image,
model=model_path,
patches=use_patches,
save=None
).run()
line_image_bin_path = self.workspace.save_image_file(
line_image_bin,
"%s_%s_%s.IMG-BIN" % (file_id, region.id, line.id),
page_id=page_id,
file_grp=self.output_file_grp)
line.add_AlternativeImage(
AlternativeImageType(filename=line_image_bin_path, comments='binarized'))
file_id = make_file_id(input_file, self.output_file_grp)
pcgts.set_pcGtsId(file_id)
self.workspace.add_file( self.workspace.add_file(
ID=file_id, ID=file_id,
file_grp=self.output_file_grp, file_grp=self.output_file_grp,