Merge commit '7930ecd428'

.gitignore

@@ -1,3 +1,10 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+
+# Distribution / packaging
+*.egg-info/
+
 # User-specific stuff
 .idea/**/workspace.xml
 .idea/**/tasks.xml

.idea/codeStyles/codeStyleConfig.xml

@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
+  </state>
+</component>

README.md

@@ -1,7 +1,11 @@
 dinglehopper
 ============
 
-dinglehopper is an OCR evaluation tool and reads [ALTO](https://github.com/altoxml), [PAGE](https://github.com/PRImA-Research-Lab/PAGE-XML) and text files.
+dinglehopper is an OCR evaluation tool and reads
+[ALTO](https://github.com/altoxml),
+[PAGE](https://github.com/PRImA-Research-Lab/PAGE-XML) and text files.  It
+compares a ground truth (GT) document page with a OCR result page to compute
+metrics and a word/character differences report.
 
 [![Build Status](https://travis-ci.org/qurator-spk/dinglehopper.svg?branch=master)](https://travis-ci.org/qurator-spk/dinglehopper)
 
@@ -23,6 +27,22 @@ sudo pip install .
 Usage
 -----
 ~~~
+Usage: dinglehopper [OPTIONS] GT OCR [REPORT_PREFIX]
+
+  Compare the PAGE/ALTO/text document GT against the document OCR.
+
+  The files GT and OCR are usually a ground truth document and the result of
+  an OCR software, but you may use dinglehopper to compare two OCR results.
+  In that case, use --no-metrics to disable the then meaningless metrics and
+  also change the color scheme from green/red to blue.
+
+Options:
+  --metrics / --no-metrics  Enable/disable metrics and green/red
+  --help                    Show this message and exit.
+~~~
+
+For example:
+~~~
 dinglehopper some-document.gt.page.xml some-document.ocr.alto.xml
 ~~~
 This generates `report.html` and `report.json`.
@@ -30,13 +50,20 @@ This generates `report.html` and `report.json`.
 
 As a OCR-D processor:
 ~~~
-ocrd-dinglehopper -m mets.xml -I OCR-D-GT-PAGE,OCR-D-OCR-TESS -O OCR-D-OCR-TESS-EVAL
+ocrd-dinglehopper -I OCR-D-GT-PAGE,OCR-D-OCR-TESS -O OCR-D-OCR-TESS-EVAL
 ~~~
 This generates HTML and JSON reports in the `OCR-D-OCR-TESS-EVAL` filegroup.
 
 
 ![dinglehopper displaying metrics and character differences](.screenshots/dinglehopper.png?raw=true)
 
+You may also want to disable metrics and the green-red color scheme by
+parameter:
+
+~~~
+ocrd-dinglehopper -I ABBYY-FULLTEXT,OCR-D-OCR-CALAMARI -O OCR-D-OCR-COMPARE-ABBYY-CALAMARI -p '{"metrics": false}'
+~~~
+
 Testing
 -------
 Use `pytest` to run the tests in [the tests directory](qurator/dinglehopper/tests):

qurator/dinglehopper/cli.py

@@ -44,7 +44,7 @@ def gen_diff_report(gt_things, ocr_things, css_prefix, joiner, none, align):
         '''.format(gtx, ocrx)
 
 
-def process(gt, ocr, report_prefix):
+def process(gt, ocr, report_prefix, *, metrics=True):
     """Check OCR result against GT.
 
     The @click decorators change the signature of the decorated functions, so we keep this undecorated version and use
@@ -91,7 +91,8 @@ def process(gt, ocr, report_prefix):
             cer=cer, n_characters=n_characters,
             wer=wer, n_words=n_words,
             char_diff_report=char_diff_report,
-            word_diff_report=word_diff_report
+            word_diff_report=word_diff_report,
+            metrics=metrics,
         ).dump(out_fn)
 
 
@@ -99,8 +100,17 @@ def process(gt, ocr, report_prefix):
 @click.argument('gt', type=click.Path(exists=True))
 @click.argument('ocr', type=click.Path(exists=True))
 @click.argument('report_prefix', type=click.Path(), default='report')
-def main(gt, ocr, report_prefix):
-    process(gt, ocr, report_prefix)
+@click.option('--metrics/--no-metrics', default=True, help='Enable/disable metrics and green/red')
+def main(gt, ocr, report_prefix, metrics):
+    """
+    Compare the PAGE/ALTO/text document GT against the document OCR.
+
+    The files GT and OCR are usually a ground truth document and the result of
+    an OCR software, but you may use dinglehopper to compare two OCR results. In
+    that case, use --no-metrics to disable the then meaningless metrics and also
+    change the color scheme from green/red to blue.
+    """
+    process(gt, ocr, report_prefix, metrics=metrics)
 
 
 if __name__ == '__main__':

qurator/dinglehopper/ocrd-tool.json

@@ -16,7 +16,14 @@
       ],
       "steps": [
         "recognition/text-recognition"
-      ]
+      ],
+      "parameters": {
+        "metrics": {
+          "type": "boolean",
+          "default": true,
+          "description": "Enable/disable metrics and green/red"
+        }
+      }
     }
   }
 }

qurator/dinglehopper/ocrd_cli.py

@@ -4,7 +4,7 @@ import os
 import click
 from ocrd import Processor
 from ocrd.decorators import ocrd_cli_options, ocrd_cli_wrap_processor
-from ocrd_utils import concat_padded, getLogger
+from ocrd_utils import getLogger, make_file_id, assert_file_grp_cardinality
 from pkg_resources import resource_string
 
 from qurator.dinglehopper.cli import process as cli_process
@@ -27,20 +27,20 @@ class OcrdDinglehopperEvaluate(Processor):
         kwargs['ocrd_tool'] = OCRD_TOOL['tools']['ocrd-dinglehopper']
         super(OcrdDinglehopperEvaluate, self).__init__(*args, **kwargs)
 
-    def _make_file_id(self, input_file, input_file_grp, n):
-        file_id = input_file.ID.replace(input_file_grp, self.output_file_grp)
-        if file_id == input_file.ID:
-            file_id = concat_padded(self.output_file_grp, n)
-        return file_id
-
     def process(self):
+        assert_file_grp_cardinality(self.input_file_grp, 2, 'GT and OCR')
+        assert_file_grp_cardinality(self.output_file_grp, 1)
+
+        metrics = self.parameter['metrics']
         gt_grp, ocr_grp = self.input_file_grp.split(',')
         for n, page_id in enumerate(self.workspace.mets.physical_pages):
             gt_file = self.workspace.mets.find_files(fileGrp=gt_grp, pageId=page_id)[0]
             ocr_file = self.workspace.mets.find_files(fileGrp=ocr_grp, pageId=page_id)[0]
+            gt_file = self.workspace.download_file(gt_file)
+            ocr_file = self.workspace.download_file(ocr_file)
             log.info("INPUT FILES %i / %s↔ %s", n, gt_file, ocr_file)
 
-            file_id = self._make_file_id(ocr_file, ocr_grp, n)
+            file_id = make_file_id(ocr_file, self.output_file_grp)
             report_prefix = os.path.join(self.output_file_grp, file_id)
 
             # Process the files
@@ -48,7 +48,12 @@ class OcrdDinglehopperEvaluate(Processor):
                 os.mkdir(self.output_file_grp)
             except FileExistsError:
                 pass
-            cli_process(gt_file.local_filename, ocr_file.local_filename, report_prefix)
+            cli_process(
+                    gt_file.local_filename,
+                    ocr_file.local_filename,
+                    report_prefix,
+                    metrics=metrics
+            )
 
             # Add reports to the workspace
             for report_suffix, mimetype in \

qurator/dinglehopper/templates/report.html.j2

@@ -6,12 +6,18 @@
 
     <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
     <style type="text/css">
+    {% if metrics %}
     .gt .diff {
         color: green;
     }
     .ocr .diff {
         color: red;
     }
+    {% else %}
+    .gt .diff, .ocr .diff {
+        color: blue;
+    }
+    {% endif %}
     .ellipsis {
         opacity: 0.5;
         font-style: italic;
@@ -32,9 +38,11 @@
 {{ ocr }}
 
 
+{% if metrics %}
 <h2>Metrics</h2>
 <p>CER: {{ cer|round(4) }}</p>
 <p>WER: {{ wer|round(4) }}</p>
+{% endif %}
 
 <h2>Character differences</h2>
 {{ char_diff_report }}

requirements.txt

@@ -4,4 +4,5 @@ lxml
 uniseg
 numpy
 colorama
-ocrd >= 1.0.0b15
+MarkupSafe
+ocrd >= 2.13.1

setup.cfg

@@ -0,0 +1,2 @@
+[flake8]
+max-line-length = 90