mirror of
https://gitlab.ub.uni-bielefeld.de/sfb1288inf/ocr.git
synced 2024-12-26 05:34:17 +00:00
More GhostScript, less dependencies!
This commit is contained in:
Patrick Jentsch
parent
2b63ba9e59
commit
7322a5bc7c
@ -14,7 +14,6 @@ RUN apt-get update \
|
||||
ca-certificates \
|
||||
gnupg2 \
|
||||
ghostscript \
|
||||
poppler-utils \
|
||||
python2.7 \
|
||||
python3.7 \
|
||||
wget \
|
||||
|
||||
86
ocr
86
ocr
@ -36,9 +36,6 @@ def parse_args():
|
||||
parser.add_argument('--binarize',
|
||||
action='store_true',
|
||||
help='Use ocropy binarisation as preprocessing step.')
|
||||
parser.add_argument('--compress',
|
||||
action='store_true',
|
||||
help='Compress the final PDF result file.')
|
||||
parser.add_argument('--log-dir')
|
||||
parser.add_argument('--n-cores',
|
||||
default=min(4, multiprocessing.cpu_count()),
|
||||
@ -59,15 +56,13 @@ class OCRPipelineJob:
|
||||
|
||||
|
||||
class OCRPipeline(WorkflowRunner):
|
||||
def __init__(self, binarize, jobs, lang, n_cores, output_dir, zip,
|
||||
compress):
|
||||
def __init__(self, binarize, jobs, lang, n_cores, output_dir, zip):
|
||||
self.binarize = binarize
|
||||
self.jobs = jobs
|
||||
self.lang = lang
|
||||
self.n_cores = n_cores
|
||||
self.output_dir = output_dir
|
||||
self.zip = zip
|
||||
self.compress = compress
|
||||
|
||||
def workflow(self):
|
||||
if not self.jobs:
|
||||
@ -160,28 +155,20 @@ class OCRPipeline(WorkflowRunner):
|
||||
|
||||
'''
|
||||
' ##################################################
|
||||
' # post binarization #
|
||||
' # Renaming of binarization output files #
|
||||
' ##################################################
|
||||
'''
|
||||
post_binarization_jobs = []
|
||||
for i, job in enumerate(self.jobs):
|
||||
input_dir = os.path.join(job.output_dir, 'tmp')
|
||||
output_dir = input_dir
|
||||
number = 0
|
||||
files = filter(lambda x: x.endswith('.bin.png'),
|
||||
os.listdir(input_dir))
|
||||
files.sort()
|
||||
for file in files:
|
||||
# int conversion is done in order to trim leading zeros
|
||||
output_file = os.path.join(output_dir, 'page-{}.bin.png'.format(int(file.split('.', 1)[0]))) # noqa
|
||||
cmd = 'mv "{}" "{}"'.format(os.path.join(output_dir, file),
|
||||
output_file)
|
||||
deps = 'binarization_-_{}'.format(i)
|
||||
lbl = 'post_binarization_-_{}-{}'.format(i, number)
|
||||
post_binarization_jobs.append(
|
||||
self.addTask(command=cmd, dependencies=deps, label=lbl)
|
||||
)
|
||||
number += 1
|
||||
page_number = int(file.split('.', 1)[0])
|
||||
output_file = 'page-{}.bin.png'.format(page_number)
|
||||
os.rename(os.path.join(output_dir, file),
|
||||
os.path.join(output_dir, output_file))
|
||||
|
||||
'''
|
||||
' The ocr_jobs are created based of the output files of either the
|
||||
@ -217,7 +204,7 @@ class OCRPipeline(WorkflowRunner):
|
||||
cmd += ' && '
|
||||
cmd += 'sed -i \'s+{}/++g\' "{}".hocr'.format(input_dir, output_file_base) # noqa
|
||||
if self.binarize:
|
||||
deps = 'post_binarization_-_{}-{}'.format(i, number)
|
||||
deps = 'binarization_-_{}'.format(i)
|
||||
else:
|
||||
deps = 'split_input_-_{}'.format(i)
|
||||
label = 'ocr_-_{}-{}'.format(i, number)
|
||||
@ -241,13 +228,20 @@ class OCRPipeline(WorkflowRunner):
|
||||
combined_pdf_creation_jobs = []
|
||||
for i, job in enumerate(self.jobs):
|
||||
input_dir = os.path.join(job.output_dir, 'tmp')
|
||||
output_dir = job.output_dir
|
||||
files = filter(lambda x: x.endswith('.pdf'),
|
||||
os.listdir(input_dir))
|
||||
files.sort(key=lambda x: int(re.search(r'\d+', x).group(0)))
|
||||
files = map(lambda x: os.path.join(input_dir, x), files)
|
||||
output_file = os.path.join(job.output_dir,
|
||||
'{}.pdf'.format(job.name))
|
||||
cmd = 'pdfunite "{}" "{}"'.format('" "'.join(files), output_file)
|
||||
output_file = os.path.join(output_dir, '{}.pdf'.format(job.name))
|
||||
cmd = 'gs'
|
||||
cmd += ' -dBATCH'
|
||||
cmd += ' -dNOPAUSE'
|
||||
cmd += ' -dPDFSETTINGS=/ebook'
|
||||
cmd += ' -dQUIET'
|
||||
cmd += ' -sDEVICE=pdfwrite'
|
||||
cmd += ' "-sOutputFile={}"'.format(output_file)
|
||||
cmd += ' "{}"'.format('" "'.join(files))
|
||||
deps = filter(lambda x: x.startswith('ocr_-_{}'.format(i)),
|
||||
ocr_jobs)
|
||||
lbl = 'combined_pdf_creation_-_{}'.format(i)
|
||||
@ -321,38 +315,6 @@ class OCRPipeline(WorkflowRunner):
|
||||
'''
|
||||
self.waitForTasks()
|
||||
|
||||
'''
|
||||
' ##################################################
|
||||
' # pdf compression #
|
||||
' ##################################################
|
||||
'''
|
||||
pdf_compression_jobs = []
|
||||
n_cores = min(self.n_cores, max(1, int(self.n_cores / len(self.jobs))))
|
||||
if self.compress:
|
||||
for i, job in enumerate(self.jobs):
|
||||
file = filter(lambda x: x.endswith('.pdf'), os.listdir(job.output_dir))[0] # noqa
|
||||
original_file = os.path.join(job.output_dir, file)
|
||||
compressed_file = os.path.join(job.output_dir, 'c_' + file)
|
||||
cmd = 'gs'
|
||||
cmd += ' -dBATCH'
|
||||
cmd += ' -dNOPAUSE'
|
||||
cmd += ' -dNumRenderingThreads={}'.format(n_cores)
|
||||
cmd += ' -dPDFSETTINGS=/ebook'
|
||||
# -dCompatibilityLevel must be defined after -dPDFSETTINGS
|
||||
cmd += ' -dCompatibilityLevel=1.4'
|
||||
cmd += ' -dQUIET'
|
||||
cmd += ' -sDEVICE=pdfwrite'
|
||||
cmd += ' "-sOutputFile={}"'.format(compressed_file)
|
||||
cmd += ' "{}"'.format(original_file)
|
||||
cmd += ' && '
|
||||
cmd += 'mv "{}" "{}"'.format(compressed_file, original_file)
|
||||
deps = 'combined_pdf_creation_-_{}'.format(i)
|
||||
lbl = 'pdf_compression_-_{}'.format(i)
|
||||
pdf_compression_jobs.append(self.addTask(command=cmd,
|
||||
dependencies=deps,
|
||||
label=lbl,
|
||||
nCores=n_cores))
|
||||
|
||||
'''
|
||||
' ##################################################
|
||||
' # cleanup #
|
||||
@ -362,10 +324,7 @@ class OCRPipeline(WorkflowRunner):
|
||||
for i, job in enumerate(self.jobs):
|
||||
input_dir = os.path.join(job.output_dir, 'tmp')
|
||||
cmd = 'rm -r "{}"'.format(input_dir)
|
||||
if self.compress:
|
||||
deps = ['pdf_compression_-_{}'.format(i)]
|
||||
else:
|
||||
deps = ['combined_pdf_creation_-_{}'.format(i)]
|
||||
deps = ['combined_pdf_creation_-_{}'.format(i)]
|
||||
deps.append('combined_txt_creation_-_{}'.format(i))
|
||||
deps.append('poco_bundle_creation_-_{}'.format(i))
|
||||
deps.append('tei_p5_creation_-_{}'.format(i))
|
||||
@ -395,8 +354,7 @@ class OCRPipeline(WorkflowRunner):
|
||||
cmd += ' -i "*.pdf" "*.txt" "*.xml" "*.hocr" "*.{}"'.format('bin.png' if self.binarize else 'tif') # noqa
|
||||
cmd += ' && '
|
||||
cmd += 'cd -'
|
||||
deps = (pdf_compression_jobs if self.compress else
|
||||
combined_pdf_creation_jobs)
|
||||
deps = combined_pdf_creation_jobs
|
||||
deps += combined_txt_creation_jobs
|
||||
deps += poco_bundle_creation_jobs
|
||||
lbl = 'zip_creation_-_all'
|
||||
@ -413,8 +371,7 @@ class OCRPipeline(WorkflowRunner):
|
||||
cmd += ' -i "*.pdf"'
|
||||
cmd += ' && '
|
||||
cmd += 'cd -'
|
||||
deps = (pdf_compression_jobs if self.compress else
|
||||
combined_pdf_creation_jobs)
|
||||
deps = combined_pdf_creation_jobs
|
||||
lbl = 'zip_creation_-_pdf'
|
||||
zip_creation_jobs.append(self.addTask(command=cmd,
|
||||
dependencies=deps,
|
||||
@ -482,8 +439,7 @@ def main():
|
||||
args = parse_args()
|
||||
jobs = collect_jobs(args.input_directory, args.output_directory)
|
||||
ocr_pipeline = OCRPipeline(args.binarize, jobs, args.language,
|
||||
args.n_cores, args.output_directory, args.zip,
|
||||
args.compress)
|
||||
args.n_cores, args.output_directory, args.zip)
|
||||
retval = ocr_pipeline.run(
|
||||
dataDirRoot=(args.log_dir or args.output_directory),
|
||||
nCores=args.n_cores
|
||||
|
||||
Loading…
Reference in New Issue
Block a user