Merge pull request #171 from bertsky/ocrd-machine-based-ro

OCR-D processor: expose reading_order_machine_based

src/eynollah/ocrd-tool.json

@@ -74,6 +74,11 @@
           "type": "boolean",
           "default": false,
           "description": "ignore the special role of headings during reading order detection"
+        },
+        "reading_order_machine_based": {
+          "type": "boolean",
+          "default": false,
+          "description": "use data-driven (rather than rule-based) reading order detection"
         }
       },
       "resources": [

src/eynollah/processor.py

@@ -24,6 +24,7 @@ class EynollahProcessor(Processor):
             allow_enhancement=self.parameter['allow_enhancement'],
             curved_line=self.parameter['curved_line'],
             right2left=self.parameter['right_to_left'],
+            reading_order_machine_based=self.parameter['reading_order_machine_based'],
             ignore_page_extraction=self.parameter['ignore_page_extraction'],
             light_version=self.parameter['light_version'],
             textline_light=self.parameter['textline_light'],
@@ -57,6 +58,8 @@ class EynollahProcessor(Processor):
         - If ``ignore_page_extraction``, then attempt no cropping of the page.
         - If ``curved_line``, then compute contour polygons for text lines
           instead of simple bounding boxes.
+        - If ``reading_order_machine_based``, then detect reading order via
+          data-driven model instead of geometrical heuristics.
 
         Produce a new output file by serialising the resulting hierarchy.
         """