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import pytest
import yaml
from realesrgan.data.realesrgan_dataset import RealESRGANDataset
from realesrgan.data.realesrgan_paired_dataset import RealESRGANPairedDataset
def test_realesrgan_dataset():
with open('tests/data/test_realesrgan_dataset.yml', mode='r') as f:
opt = yaml.load(f, Loader=yaml.FullLoader)
dataset = RealESRGANDataset(opt)
assert dataset.io_backend_opt['type'] == 'disk' # io backend
assert len(dataset) == 2 # whether to read correct meta info
assert dataset.kernel_list == [
'iso', 'aniso', 'generalized_iso', 'generalized_aniso', 'plateau_iso', 'plateau_aniso'
] # correct initialization the degradation configurations
assert dataset.betag_range2 == [0.5, 4]
# test __getitem__
result = dataset.__getitem__(0)
# check returned keys
expected_keys = ['gt', 'kernel1', 'kernel2', 'sinc_kernel', 'gt_path']
assert set(expected_keys).issubset(set(result.keys()))
# check shape and contents
assert result['gt'].shape == (3, 400, 400)
assert result['kernel1'].shape == (21, 21)
assert result['kernel2'].shape == (21, 21)
assert result['sinc_kernel'].shape == (21, 21)
assert result['gt_path'] == 'tests/data/gt/baboon.png'
# ------------------ test lmdb backend -------------------- #
opt['dataroot_gt'] = 'tests/data/gt.lmdb'
opt['io_backend']['type'] = 'lmdb'
dataset = RealESRGANDataset(opt)
assert dataset.io_backend_opt['type'] == 'lmdb' # io backend
assert len(dataset.paths) == 2 # whether to read correct meta info
assert dataset.kernel_list == [
'iso', 'aniso', 'generalized_iso', 'generalized_aniso', 'plateau_iso', 'plateau_aniso'
] # correct initialization the degradation configurations
assert dataset.betag_range2 == [0.5, 4]
# test __getitem__
result = dataset.__getitem__(1)
# check returned keys
expected_keys = ['gt', 'kernel1', 'kernel2', 'sinc_kernel', 'gt_path']
assert set(expected_keys).issubset(set(result.keys()))
# check shape and contents
assert result['gt'].shape == (3, 400, 400)
assert result['kernel1'].shape == (21, 21)
assert result['kernel2'].shape == (21, 21)
assert result['sinc_kernel'].shape == (21, 21)
assert result['gt_path'] == 'comic'
# ------------------ test with sinc_prob = 0 -------------------- #
opt['dataroot_gt'] = 'tests/data/gt.lmdb'
opt['io_backend']['type'] = 'lmdb'
opt['sinc_prob'] = 0
opt['sinc_prob2'] = 0
opt['final_sinc_prob'] = 0
dataset = RealESRGANDataset(opt)
result = dataset.__getitem__(0)
# check returned keys
expected_keys = ['gt', 'kernel1', 'kernel2', 'sinc_kernel', 'gt_path']
assert set(expected_keys).issubset(set(result.keys()))
# check shape and contents
assert result['gt'].shape == (3, 400, 400)
assert result['kernel1'].shape == (21, 21)
assert result['kernel2'].shape == (21, 21)
assert result['sinc_kernel'].shape == (21, 21)
assert result['gt_path'] == 'baboon'
# ------------------ lmdb backend should have paths ends with lmdb -------------------- #
with pytest.raises(ValueError):
opt['dataroot_gt'] = 'tests/data/gt'
opt['io_backend']['type'] = 'lmdb'
dataset = RealESRGANDataset(opt)
def test_realesrgan_paired_dataset():
with open('tests/data/test_realesrgan_paired_dataset.yml', mode='r') as f:
opt = yaml.load(f, Loader=yaml.FullLoader)
dataset = RealESRGANPairedDataset(opt)
assert dataset.io_backend_opt['type'] == 'disk' # io backend
assert len(dataset) == 2 # whether to read correct meta info
# test __getitem__
result = dataset.__getitem__(0)
# check returned keys
expected_keys = ['gt', 'lq', 'gt_path', 'lq_path']
assert set(expected_keys).issubset(set(result.keys()))
# check shape and contents
assert result['gt'].shape == (3, 128, 128)
assert result['lq'].shape == (3, 32, 32)
assert result['gt_path'] == 'tests/data/gt/baboon.png'
assert result['lq_path'] == 'tests/data/lq/baboon.png'
# ------------------ test lmdb backend -------------------- #
opt['dataroot_gt'] = 'tests/data/gt.lmdb'
opt['dataroot_lq'] = 'tests/data/lq.lmdb'
opt['io_backend']['type'] = 'lmdb'
dataset = RealESRGANPairedDataset(opt)
assert dataset.io_backend_opt['type'] == 'lmdb' # io backend
assert len(dataset) == 2 # whether to read correct meta info
# test __getitem__
result = dataset.__getitem__(1)
# check returned keys
expected_keys = ['gt', 'lq', 'gt_path', 'lq_path']
assert set(expected_keys).issubset(set(result.keys()))
# check shape and contents
assert result['gt'].shape == (3, 128, 128)
assert result['lq'].shape == (3, 32, 32)
assert result['gt_path'] == 'comic'
assert result['lq_path'] == 'comic'
# ------------------ test paired_paths_from_folder -------------------- #
opt['dataroot_gt'] = 'tests/data/gt'
opt['dataroot_lq'] = 'tests/data/lq'
opt['io_backend'] = dict(type='disk')
opt['meta_info'] = None
dataset = RealESRGANPairedDataset(opt)
assert dataset.io_backend_opt['type'] == 'disk' # io backend
assert len(dataset) == 2 # whether to read correct meta info
# test __getitem__
result = dataset.__getitem__(0)
# check returned keys
expected_keys = ['gt', 'lq', 'gt_path', 'lq_path']
assert set(expected_keys).issubset(set(result.keys()))
# check shape and contents
assert result['gt'].shape == (3, 128, 128)
assert result['lq'].shape == (3, 32, 32)
# ------------------ test normalization -------------------- #
dataset.mean = [0.5, 0.5, 0.5]
dataset.std = [0.5, 0.5, 0.5]
# test __getitem__
result = dataset.__getitem__(0)
# check returned keys
expected_keys = ['gt', 'lq', 'gt_path', 'lq_path']
assert set(expected_keys).issubset(set(result.keys()))
# check shape and contents
assert result['gt'].shape == (3, 128, 128)
assert result['lq'].shape == (3, 32, 32)
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