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# Copyright 2020 Division of Medical Image Computing, German Cancer Research Center (DKFZ), Heidelberg, Germany
#
# 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 batchgenerators.dataloading.multi_threaded_augmenter import MultiThreadedAugmenter
from batchgenerators.transforms.abstract_transforms import Compose
from batchgenerators.transforms.channel_selection_transforms import DataChannelSelectionTransform, \
SegChannelSelectionTransform
from batchgenerators.transforms.color_transforms import BrightnessMultiplicativeTransform, \
ContrastAugmentationTransform, BrightnessTransform, GammaTransform
from batchgenerators.transforms.noise_transforms import GaussianNoiseTransform, GaussianBlurTransform
from batchgenerators.transforms.resample_transforms import SimulateLowResolutionTransform
from batchgenerators.transforms.spatial_transforms import SpatialTransform, MirrorTransform
from batchgenerators.transforms.utility_transforms import RemoveLabelTransform, RenameTransform, NumpyToTensor
from nnunet.training.data_augmentation.custom_transforms import Convert3DTo2DTransform, Convert2DTo3DTransform, \
MaskTransform, ConvertSegmentationToRegionsTransform
from nnunet.training.data_augmentation.default_data_augmentation import default_3D_augmentation_params
from nnunet.training.data_augmentation.downsampling import DownsampleSegForDSTransform3, DownsampleSegForDSTransform2
from nnunet.training.data_augmentation.pyramid_augmentations import MoveSegAsOneHotToData, \
ApplyRandomBinaryOperatorTransform, \
RemoveRandomConnectedComponentFromOneHotEncodingTransform
try:
from batchgenerators.dataloading.nondet_multi_threaded_augmenter import NonDetMultiThreadedAugmenter
except ImportError as ie:
NonDetMultiThreadedAugmenter = None
def get_insaneDA_augmentation(dataloader_train, dataloader_val, patch_size, params=default_3D_augmentation_params,
border_val_seg=-1,
seeds_train=None, seeds_val=None, order_seg=1, order_data=3, deep_supervision_scales=None,
soft_ds=False,
classes=None, pin_memory=True, regions=None):
assert params.get('mirror') is None, "old version of params, use new keyword do_mirror"
tr_transforms = []
if params.get("selected_data_channels") is not None:
tr_transforms.append(DataChannelSelectionTransform(params.get("selected_data_channels")))
if params.get("selected_seg_channels") is not None:
tr_transforms.append(SegChannelSelectionTransform(params.get("selected_seg_channels")))
# don't do color augmentations while in 2d mode with 3d data because the color channel is overloaded!!
if params.get("dummy_2D") is not None and params.get("dummy_2D"):
ignore_axes = (0,)
tr_transforms.append(Convert3DTo2DTransform())
patch_size_spatial = patch_size[1:]
else:
patch_size_spatial = patch_size
ignore_axes = None
tr_transforms.append(SpatialTransform(
patch_size_spatial, patch_center_dist_from_border=None, do_elastic_deform=params.get("do_elastic"),
alpha=params.get("elastic_deform_alpha"), sigma=params.get("elastic_deform_sigma"),
do_rotation=params.get("do_rotation"), angle_x=params.get("rotation_x"), angle_y=params.get("rotation_y"),
angle_z=params.get("rotation_z"), do_scale=params.get("do_scaling"), scale=params.get("scale_range"),
border_mode_data=params.get("border_mode_data"), border_cval_data=0, order_data=order_data,
border_mode_seg="constant", border_cval_seg=border_val_seg,
order_seg=order_seg, random_crop=params.get("random_crop"), p_el_per_sample=params.get("p_eldef"),
p_scale_per_sample=params.get("p_scale"), p_rot_per_sample=params.get("p_rot"),
independent_scale_for_each_axis=params.get("independent_scale_factor_for_each_axis"),
p_independent_scale_per_axis=params.get("p_independent_scale_per_axis")
))
if params.get("dummy_2D"):
tr_transforms.append(Convert2DTo3DTransform())
# we need to put the color augmentations after the dummy 2d part (if applicable). Otherwise the overloaded color
# channel gets in the way
tr_transforms.append(GaussianNoiseTransform(p_per_sample=0.15))
tr_transforms.append(GaussianBlurTransform((0.5, 1.5), different_sigma_per_channel=True, p_per_sample=0.2,
p_per_channel=0.5))
tr_transforms.append(BrightnessMultiplicativeTransform(multiplier_range=(0.70, 1.3), p_per_sample=0.15))
tr_transforms.append(ContrastAugmentationTransform(contrast_range=(0.65, 1.5), p_per_sample=0.15))
tr_transforms.append(SimulateLowResolutionTransform(zoom_range=(0.5, 1), per_channel=True,
p_per_channel=0.5,
order_downsample=0, order_upsample=3, p_per_sample=0.25,
ignore_axes=ignore_axes))
tr_transforms.append(
GammaTransform(params.get("gamma_range"), True, True, retain_stats=params.get("gamma_retain_stats"),
p_per_sample=0.15)) # inverted gamma
if params.get("do_additive_brightness"):
tr_transforms.append(BrightnessTransform(params.get("additive_brightness_mu"),
params.get("additive_brightness_sigma"),
True, p_per_sample=params.get("additive_brightness_p_per_sample"),
p_per_channel=params.get("additive_brightness_p_per_channel")))
if params.get("do_gamma"):
tr_transforms.append(
GammaTransform(params.get("gamma_range"), False, True, retain_stats=params.get("gamma_retain_stats"),
p_per_sample=params["p_gamma"]))
if params.get("do_mirror") or params.get("mirror"):
tr_transforms.append(MirrorTransform(params.get("mirror_axes")))
if params.get("mask_was_used_for_normalization") is not None:
mask_was_used_for_normalization = params.get("mask_was_used_for_normalization")
tr_transforms.append(MaskTransform(mask_was_used_for_normalization, mask_idx_in_seg=0, set_outside_to=0))
tr_transforms.append(RemoveLabelTransform(-1, 0))
if params.get("move_last_seg_chanel_to_data") is not None and params.get("move_last_seg_chanel_to_data"):
tr_transforms.append(MoveSegAsOneHotToData(1, params.get("all_segmentation_labels"), 'seg', 'data'))
if params.get("cascade_do_cascade_augmentations") and not None and params.get(
"cascade_do_cascade_augmentations"):
if params.get("cascade_random_binary_transform_p") > 0:
tr_transforms.append(ApplyRandomBinaryOperatorTransform(
channel_idx=list(range(-len(params.get("all_segmentation_labels")), 0)),
p_per_sample=params.get("cascade_random_binary_transform_p"),
key="data",
strel_size=params.get("cascade_random_binary_transform_size")))
if params.get("cascade_remove_conn_comp_p") > 0:
tr_transforms.append(
RemoveRandomConnectedComponentFromOneHotEncodingTransform(
channel_idx=list(range(-len(params.get("all_segmentation_labels")), 0)),
key="data",
p_per_sample=params.get("cascade_remove_conn_comp_p"),
fill_with_other_class_p=params.get("cascade_remove_conn_comp_max_size_percent_threshold"),
dont_do_if_covers_more_than_X_percent=params.get(
"cascade_remove_conn_comp_fill_with_other_class_p")))
tr_transforms.append(RenameTransform('seg', 'target', True))
if regions is not None:
tr_transforms.append(ConvertSegmentationToRegionsTransform(regions, 'target', 'target'))
if deep_supervision_scales is not None:
if soft_ds:
assert classes is not None
tr_transforms.append(DownsampleSegForDSTransform3(deep_supervision_scales, 'target', 'target', classes))
else:
tr_transforms.append(DownsampleSegForDSTransform2(deep_supervision_scales, 0, input_key='target',
output_key='target'))
tr_transforms.append(NumpyToTensor(['data', 'target'], 'float'))
tr_transforms = Compose(tr_transforms)
batchgenerator_train = MultiThreadedAugmenter(dataloader_train, tr_transforms, params.get('num_threads'),
params.get("num_cached_per_thread"),
seeds=seeds_train, pin_memory=pin_memory)
val_transforms = []
val_transforms.append(RemoveLabelTransform(-1, 0))
if params.get("selected_data_channels") is not None:
val_transforms.append(DataChannelSelectionTransform(params.get("selected_data_channels")))
if params.get("selected_seg_channels") is not None:
val_transforms.append(SegChannelSelectionTransform(params.get("selected_seg_channels")))
if params.get("move_last_seg_chanel_to_data") is not None and params.get("move_last_seg_chanel_to_data"):
val_transforms.append(MoveSegAsOneHotToData(1, params.get("all_segmentation_labels"), 'seg', 'data'))
val_transforms.append(RenameTransform('seg', 'target', True))
if regions is not None:
val_transforms.append(ConvertSegmentationToRegionsTransform(regions, 'target', 'target'))
if deep_supervision_scales is not None:
if soft_ds:
assert classes is not None
val_transforms.append(DownsampleSegForDSTransform3(deep_supervision_scales, 'target', 'target', classes))
else:
val_transforms.append(DownsampleSegForDSTransform2(deep_supervision_scales, 0, input_key='target',
output_key='target'))
val_transforms.append(NumpyToTensor(['data', 'target'], 'float'))
val_transforms = Compose(val_transforms)
batchgenerator_val = MultiThreadedAugmenter(dataloader_val, val_transforms, max(params.get('num_threads') // 2, 1),
params.get("num_cached_per_thread"),
seeds=seeds_val, pin_memory=pin_memory)
return batchgenerator_train, batchgenerator_val |