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ppocr/metrics/ct_metric.py

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+# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
+import os
+from scipy import io
+import numpy as np
+
+from ppocr.utils.e2e_metric.Deteval import combine_results, get_score_C
+
+
+class CTMetric(object):
+    def __init__(self, main_indicator, delimiter="\t", **kwargs):
+        self.delimiter = delimiter
+        self.main_indicator = main_indicator
+        self.reset()
+
+    def reset(self):
+        self.results = []  # clear results
+
+    def __call__(self, preds, batch, **kwargs):
+        # NOTE: only support bs=1 now, as the label length of different sample is Unequal
+        assert len(preds) == 1, "CentripetalText test now only support batch_size=1."
+        label = batch[2]
+        text = batch[3]
+        pred = preds[0]["points"]
+        result = get_score_C(label, text, pred)
+
+        self.results.append(result)
+
+    def get_metric(self):
+        """
+        Input format: y0,x0, ..... yn,xn. Each detection is separated by the end of line token ('\n')'
+        """
+        metrics = combine_results(self.results, rec_flag=False)
+        self.reset()
+        return metrics