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143 lines
4.3 KiB
Bash
143 lines
4.3 KiB
Bash
#!/bin/bash
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LOG_LEVEL='DEBUG'
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set -e # Abort on error
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if [ "$LOG_LEVEL" = "DEBUG" -o "$LOG_LEVEL" = "TRACE" ]; then
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set -x
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fi
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remove_filegrp() {
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# Remove the given file group from the workspace
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filegrp_use=$1
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mets=$2
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xmlstarlet ed --inplace \
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-N mets=http://www.loc.gov/METS/ \
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-d "//mets:fileGrp[@USE='$filegrp_use']" $mets
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# XXX See also https://github.com/OCR-D/core/issues/245
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# XXX This should also delete the files (after checking if they are indeed inside the workspace) and the directory
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}
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do_binarization() {
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# Binarize the images
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remove_filegrp OCR-D-IMG-BIN mets.xml
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ocrd-kraken-binarize -l $LOG_LEVEL \
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-m mets.xml -I OCR-D-IMG -O OCR-D-IMG-BIN
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}
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do_fontident() {
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# Identify fonts in the images
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network=`python3 -c "import ocrd_typegroups_classifier, os; print(os.path.join(os.path.dirname(ocrd_typegroups_classifier.__file__), 'models', 'classifier.tgc'))"`
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ocrd_typegroups_classifier_parameters="
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{
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\"network\": \"$network\",
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\"stride\": 143
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}"
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remove_filegrp OCR-D-FONTIDENT mets.xml
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ocrd-typegroups-classifier -l $LOG_LEVEL \
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-m mets.xml -I OCR-D-IMG -O OCR-D-FONTIDENT \
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-p <(echo $ocrd_typegroups_classifier_parameters)
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# XXX Check if ocrd-typegroups-classifier uses the whole image
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# XXX does DEFAULT have any meaning? /buerger_gedichte_1778.ocrd does not have
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# any DEFAULT, yet -I DEFAULT seems to work for ocrd-typegroups-classifier
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#ocrd workspace validate mets.xml
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# XXX <error>Unspecified USE category 'FONTIDENT' in fileGrp 'OCR-D-FONTIDENT'</error>
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# XXX <error>File 'OCR-D-FONTIDENT_OCR-D-IMG_0002' does not manifest any physical page.</error>
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# XXX <notice>Won't download remote image <OCR-D-IMG/OCR-D-IMG_0002></notice>
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}
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do_linesegmentation() {
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# Segment the lines in the binarized images
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remove_filegrp OCR-D-SEG-REGION mets.xml
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remove_filegrp OCR-D-SEG-LINE mets.xml
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#ocrd-ocropy-segment -l $LOG_LEVEL \
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# -m mets.xml -I OCR-D-IMG-BIN -O OCR-D-SEG-LINE
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# XXX ocrd-ocropy-segment throws an exception for buerger_gedichte_1778.ocrd
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#ocrd workspace validate mets.xml
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ocrd-tesserocr-segment-region -l $LOG_LEVEL \
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-m mets.xml -I OCR-D-IMG-BIN -O OCR-D-SEG-REGION
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#ocrd workspace validate mets.xml
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ocrd-tesserocr-segment-line -l $LOG_LEVEL \
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-m mets.xml -I OCR-D-SEG-REGION -O OCR-D-SEG-LINE
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#ocrd workspace validate mets.xml
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# XXX compare ocrd-tesserocr-segment* vs tesseract native
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# XXX This leaves copies of the images at the top level of the workspace, because it "downloads" the "remote" files.
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# Clean it up. (Maybe only affects ocrd-ocropy-segment)
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find . -maxdepth 1 -name "OCR-D-IMG*" -type f -exec rm -v {} \;
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}
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do_ocr() {
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# Perform OCR on the segmented lines
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ocrd_tesserocr_recognize_parameters='{ "model": "eng" }' # TODO mods:language + fontident → model
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remove_filegrp OCR-D-OCR-TESS mets.xml
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ocrd-tesserocr-recognize -l $LOG_LEVEL \
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-m mets.xml -I OCR-D-SEG-LINE -O OCR-D-OCR-TESS \
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-p <(echo $ocrd_tesserocr_recognize_parameters)
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#ocrd workspace validate mets.xml
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# XXX <error>INCONSISTENCY in TextRegion ID 'dummy'
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# (The whitespace is different)
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}
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page_fix_xml() {
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# Fix the PAGE XML generated by OCR-D core
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#
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# XXX core does not produce valid XML (See https://github.com/OCR-D/core/issues/242), fix it by setting the correct
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# PAGE XML version. This makes PAGE Viewer open the file.
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filegrp=$1
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local file
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for file in `ocrd workspace find -G $filegrp`; do
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sed -i 's#pagecontent/2017-07-15#pagecontent/2018-07-15#g' $file
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done
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}
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page_validate_xml() {
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# Validate all PAGE XML against the XML schema
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filegrp=$1
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local file
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for file in `ocrd workspace find -G $filegrp`; do
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xmllint --noout --schema `dirname $0`/xsd/pagecontent.2018-07-15.xsd $file
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done
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}
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page_fix_image_references() {
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# Make image references relative to the PAGE XML file
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#
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# The rest of OCR-D probably isn't going to like it, but it is a. correct and b. makes PAGE Viewer open the image file
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# automatically.
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filegrp=$1
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local file
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for file in `ocrd workspace find -G $filegrp`; do
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sed -i 's#imageFilename="OCR-D-IMG#imageFilename="../OCR-D-IMG#g' $file
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done
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}
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do_fontident
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do_binarization
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do_linesegmentation
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do_ocr
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page_fix_xml OCR-D-OCR-TESS
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page_validate_xml OCR-D-OCR-TESS
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page_fix_image_references OCR-D-OCR-TESS
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# vim:tw=120:
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