🧹 Move check-FULLTEXT-Page-dimensions-vs-BEST-dimensions.py code to mono-repo/experiments
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"""Check FULLTEXT ALTO page dimensions against BEST image dimensions"""
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import PIL.Image
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import sys
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from ocrd.workspace import Workspace
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from ocrd.resolver import Resolver
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from lxml import etree as ET
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def alto_namespace(tree):
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"""
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Return the ALTO namespace used in the given ElementTree.
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This relies on the assumption that, in any given ALTO file, the root
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element has the local name "alto". We do not check if the files uses any
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valid ALTO namespace.
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"""
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root_name = ET.QName(tree.getroot().tag)
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if root_name.localname == 'alto':
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return root_name.namespace
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else:
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raise ValueError('Not an ALTO tree')
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exit_code = 0
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workspace = Workspace(Resolver(), '.')
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for n, page_id in enumerate(workspace.mets.physical_pages):
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gt_file = workspace.mets.find_files(fileGrp='FULLTEXT', pageId=page_id)[0]
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img_file = workspace.mets.find_files(fileGrp='BEST', pageId=page_id)[0]
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gt_file = workspace.download_file(gt_file)
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img_file = workspace.download_file(img_file)
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tree = ET.parse(gt_file.local_filename)
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nsmap = {'alto': alto_namespace(tree)}
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alto_page = tree.find('//alto:Page', namespaces=nsmap) # one page assumed
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gt_size = int(alto_page.attrib['WIDTH']), int(alto_page.attrib['HEIGHT'])
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img_size = PIL.Image.open(img_file.local_filename).size
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if gt_size == img_size:
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print('OK', page_id)
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else:
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print('ERR', page_id, gt_size, '!=', img_size)
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exit_code = 1
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sys.exit(exit_code)
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