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https://github.com/open-mmlab/mmsegmentation.git
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ff95416c3b
## Motivation 1. It is used to save the segmentation predictions as files and upload these files to a test server ## Modification 1. Add output_file and format only in `IoUMetric` ## BC-breaking (Optional) No ## Use cases (Optional) If this PR introduces a new feature, it is better to list some use cases here, and update the documentation. ## Checklist 1. Pre-commit or other linting tools are used to fix the potential lint issues. 3. The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness. 4. If the modification has potential influence on downstream projects, this PR should be tested with downstream projects, like MMDet or MMDet3D. 5. The documentation has been modified accordingly, like docstring or example tutorials.
120 lines
4.3 KiB
Python
120 lines
4.3 KiB
Python
# Copyright (c) OpenMMLab. All rights reserved.
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import os.path as osp
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import shutil
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from unittest import TestCase
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import numpy as np
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import pytest
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import torch
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from mmengine.structures import PixelData
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from mmseg.evaluation import CityscapesMetric
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from mmseg.structures import SegDataSample
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class TestCityscapesMetric(TestCase):
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def _demo_mm_inputs(self,
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batch_size=1,
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image_shapes=(3, 128, 256),
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num_classes=5):
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"""Create a superset of inputs needed to run test or train batches.
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Args:
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batch_size (int): batch size. Default to 2.
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image_shapes (List[tuple], Optional): image shape.
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Default to (3, 64, 64)
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num_classes (int): number of different classes.
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Default to 5.
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"""
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if isinstance(image_shapes, list):
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assert len(image_shapes) == batch_size
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else:
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image_shapes = [image_shapes] * batch_size
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packed_inputs = []
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for idx in range(batch_size):
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image_shape = image_shapes[idx]
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_, h, w = image_shape
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data_sample = SegDataSample()
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gt_semantic_seg = np.random.randint(
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0, num_classes, (1, h, w), dtype=np.uint8)
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gt_semantic_seg = torch.LongTensor(gt_semantic_seg)
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gt_sem_seg_data = dict(data=gt_semantic_seg)
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data_sample.gt_sem_seg = PixelData(**gt_sem_seg_data)
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data_sample = data_sample.to_dict()
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data_sample[
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'seg_map_path'] = 'tests/data/pseudo_cityscapes_dataset/gtFine/val/frankfurt/frankfurt_000000_000294_gtFine_labelTrainIds.png' # noqa
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packed_inputs.append(data_sample)
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return packed_inputs
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def _demo_mm_model_output(self,
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batch_size=1,
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image_shapes=(3, 128, 256),
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num_classes=5):
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"""Create a superset of inputs needed to run test or train batches.
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Args:
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batch_size (int): batch size. Default to 2.
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image_shapes (List[tuple], Optional): image shape.
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Default to (3, 64, 64)
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num_classes (int): number of different classes.
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Default to 5.
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"""
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results_dict = dict()
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_, h, w = image_shapes
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seg_logit = torch.randn(batch_size, num_classes, h, w)
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results_dict['seg_logits'] = seg_logit
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seg_pred = np.random.randint(
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0, num_classes, (batch_size, h, w), dtype=np.uint8)
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seg_pred = torch.LongTensor(seg_pred)
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results_dict['pred_sem_seg'] = seg_pred
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batch_datasampes = [
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SegDataSample()
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for _ in range(results_dict['pred_sem_seg'].shape[0])
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]
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for key, value in results_dict.items():
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for i in range(value.shape[0]):
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setattr(batch_datasampes[i], key, PixelData(data=value[i]))
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_predictions = []
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for pred in batch_datasampes:
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test_data = pred.to_dict()
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test_data[
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'img_path'] = 'tests/data/pseudo_cityscapes_dataset/leftImg8bit/val/frankfurt/frankfurt_000000_000294_leftImg8bit.png' # noqa
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_predictions.append(test_data)
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return _predictions
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def test_evaluate(self):
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"""Test using the metric in the same way as Evalutor."""
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data_batch = self._demo_mm_inputs(2)
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predictions = self._demo_mm_model_output(2)
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data_samples = [
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dict(**data, **result)
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for data, result in zip(data_batch, predictions)
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]
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# test keep_results should be True when format_only is True
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with pytest.raises(AssertionError):
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CityscapesMetric(
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output_dir='tmp', format_only=True, keep_results=False)
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# test evaluate with cityscape metric
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metric = CityscapesMetric(output_dir='tmp')
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metric.process(data_batch, data_samples)
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res = metric.evaluate(2)
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self.assertIsInstance(res, dict)
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# test format_only
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metric = CityscapesMetric(
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output_dir='tmp', format_only=True, keep_results=True)
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metric.process(data_batch, data_samples)
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metric.evaluate(2)
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assert osp.exists('tmp')
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assert osp.isfile('tmp/frankfurt_000000_000294_leftImg8bit.png')
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shutil.rmtree('tmp')
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