Workflow Guide generic transformations

Sometimes PAGE-XML annotations need to be processed specially to make a workflow's processors interoperate properly. For example, a text producing processor might forget to make TextEquiv consistent between hierarchy levels, or it might be necessary to remove specific region types. Also, repairing minor syntactic or semantic deficiencies is usually required for export or visualization, like removing empty ReadingOrder and dead @regionRefs, ensuring each TextEquiv has a Unicode, or fixing negative or floating-point coordinates. While it is always possible to do that ad-hoc via scripts, it might help formulate this as a proper workflow step via processor CLI.

Available processors

Processor	Parameter	Remarks	Call
ocrd-page-transform	-P xsl page-remove-regions.xsl -P xslt-params "-s type=ImageRegion"	Many useful XSLTs come as preinstalled resources, but can be passed any XSL file. Specify mimetype if the output is not PAGE-XML anymore	ocrd-page-transform

Notes