mirror of https://github.com/open-mmlab/mmocr.git
91 lines
2.6 KiB
Python
91 lines
2.6 KiB
Python
import pytest
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import torch
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from mmocr.models.common.losses import DiceLoss
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from mmocr.models.textrecog.losses import CELoss, CTCLoss, SARLoss, TFLoss
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def test_ctc_loss():
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with pytest.raises(AssertionError):
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CTCLoss(flatten='flatten')
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with pytest.raises(AssertionError):
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CTCLoss(blank=None)
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with pytest.raises(AssertionError):
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CTCLoss(reduction=1)
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with pytest.raises(AssertionError):
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CTCLoss(zero_infinity='zero')
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# test CTCLoss
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ctc_loss = CTCLoss()
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outputs = torch.zeros(2, 40, 37)
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targets_dict = {
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'flatten_targets': torch.IntTensor([1, 2, 3, 4, 5]),
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'target_lengths': torch.LongTensor([2, 3])
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}
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losses = ctc_loss(outputs, targets_dict)
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assert isinstance(losses, dict)
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assert 'loss_ctc' in losses
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assert torch.allclose(losses['loss_ctc'],
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torch.tensor(losses['loss_ctc'].item()).float())
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def test_ce_loss():
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with pytest.raises(AssertionError):
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CELoss(ignore_index='ignore')
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with pytest.raises(AssertionError):
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CELoss(reduction=1)
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with pytest.raises(AssertionError):
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CELoss(reduction='avg')
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ce_loss = CELoss(ignore_index=0)
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outputs = torch.rand(1, 10, 37)
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targets_dict = {
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'padded_targets': torch.LongTensor([[1, 2, 3, 4, 0, 0, 0, 0, 0, 0]])
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}
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losses = ce_loss(outputs, targets_dict)
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assert isinstance(losses, dict)
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assert 'loss_ce' in losses
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print(losses['loss_ce'].size())
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assert losses['loss_ce'].size(1) == 10
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def test_sar_loss():
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outputs = torch.rand(1, 10, 37)
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targets_dict = {
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'padded_targets': torch.LongTensor([[1, 2, 3, 4, 0, 0, 0, 0, 0, 0]])
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}
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sar_loss = SARLoss()
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new_output, new_target = sar_loss.format(outputs, targets_dict)
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assert new_output.shape == torch.Size([1, 37, 9])
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assert new_target.shape == torch.Size([1, 9])
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def test_tf_loss():
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with pytest.raises(AssertionError):
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TFLoss(flatten=1.0)
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outputs = torch.rand(1, 10, 37)
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targets_dict = {
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'padded_targets': torch.LongTensor([[1, 2, 3, 4, 0, 0, 0, 0, 0, 0]])
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}
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tf_loss = TFLoss(flatten=False)
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new_output, new_target = tf_loss.format(outputs, targets_dict)
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assert new_output.shape == torch.Size([1, 37, 9])
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assert new_target.shape == torch.Size([1, 9])
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def test_dice_loss():
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with pytest.raises(AssertionError):
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DiceLoss(eps='1')
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dice_loss = DiceLoss()
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pred = torch.rand(1, 1, 32, 32)
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gt = torch.rand(1, 1, 32, 32)
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loss = dice_loss(pred, gt, None)
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assert isinstance(loss, torch.Tensor)
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mask = torch.rand(1, 1, 1, 1)
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loss = dice_loss(pred, gt, mask)
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assert isinstance(loss, torch.Tensor)
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