Added code to turn a network using German font names to an English sp…

…eaking one

ocrd_typegroups_classifier/data/classmap.py

@@ -65,6 +65,15 @@ def __init__(self, basemap):
     def forget_class(self, target):
         del self.id2cl[self.cl2id[target]]
         del self.cl2id[target]
+
+    def translate(self, dictionary):
+        for name in self.cl2id:
+            if not name in dictionary:
+                continue
+            n = self.cl2id[name]
+            del self.cl2id[name]
+            self.cl2id[dictionary[name]] = n
+            self.id2cl[n] = dictionary[name]
 
     def get_target_transform(self, dataset_classes):
         """ Creates a transform from a map (class name to id) to the

translate-model.py

@@ -0,0 +1,20 @@
+from ocrd_typegroups_classifier.typegroups_classifier import TypegroupsClassifier
+
+
+translation = {
+    'griechisch': 'greek',
+    'hebräisch': 'hebrew',
+    'kursiv': 'italic',
+    'andere_schrift': 'other_font',
+    'nicht_schrift': 'not_a_font'
+}
+
+
+tgc = TypegroupsClassifier.load('ocrd_typegroups_classifier/models/classifier.tgc')
+# backup
+tgc.save('ocrd_typegroups_classifier/models/classifier-german-speaking.tgc')
+
+print(tgc.classMap)
+tgc.classMap.translate(translation)
+print(tgc.classMap)
+tgc.save('ocrd_typegroups_classifier/models/classifier.tgc')