Some transform/data/loader refactoring, hopefully didn't break things

* factor out data related constants to own file
* move data related config helpers to own file
* add a variant of RandomResizeCrop that randomizes interpolation method
* remove old Numpy version of RandomErasing
* cleanup torch version of RandomErasing and use it in either GPU loader batch mode or single image cpu Transform

data/__init__.py

@@ -1,4 +1,5 @@
+from data.constants import *
+from data.config import resolve_data_config
 from data.dataset import Dataset
 from data.transforms import *
 from data.loader import create_loader
-from data.random_erasing import RandomErasingTorch, RandomErasingNumpy

data/config.py

@@ -0,0 +1,101 @@
+from data.constants import *
+
+
+def resolve_data_config(model, args, default_cfg={}, verbose=True):
+    new_config = {}
+    default_cfg = default_cfg
+    if not default_cfg and hasattr(model, 'default_cfg'):
+        default_cfg = model.default_cfg
+
+    # Resolve input/image size
+    # FIXME grayscale/chans arg to use different # channels?
+    in_chans = 3
+    input_size = (in_chans, 224, 224)
+    if args.img_size is not None:
+        # FIXME support passing img_size as tuple, non-square
+        assert isinstance(args.img_size, int)
+        input_size = (in_chans, args.img_size, args.img_size)
+    elif 'input_size' in default_cfg:
+        input_size = default_cfg['input_size']
+    new_config['input_size'] = input_size
+
+    # resolve interpolation method
+    new_config['interpolation'] = 'bilinear'
+    if args.interpolation:
+        new_config['interpolation'] = args.interpolation
+    elif 'interpolation' in default_cfg:
+        new_config['interpolation'] = default_cfg['interpolation']
+
+    # resolve dataset + model mean for normalization
+    new_config['mean'] = get_mean_by_model(args.model)
+    if args.mean is not None:
+        mean = tuple(args.mean)
+        if len(mean) == 1:
+            mean = tuple(list(mean) * in_chans)
+        else:
+            assert len(mean) == in_chans
+        new_config['mean'] = mean
+    elif 'mean' in default_cfg:
+        new_config['mean'] = default_cfg['mean']
+
+    # resolve dataset + model std deviation for normalization
+    new_config['std'] = get_std_by_model(args.model)
+    if args.std is not None:
+        std = tuple(args.std)
+        if len(std) == 1:
+            std = tuple(list(std) * in_chans)
+        else:
+            assert len(std) == in_chans
+        new_config['std'] = std
+    elif 'std' in default_cfg:
+        new_config['std'] = default_cfg['std']
+
+    # resolve default crop percentage
+    new_config['crop_pct'] = DEFAULT_CROP_PCT
+    if 'crop_pct' in default_cfg:
+        new_config['crop_pct'] = default_cfg['crop_pct']
+
+    if verbose:
+        print('Data processing configuration for current model + dataset:')
+        for n, v in new_config.items():
+            print('\t%s: %s' % (n, str(v)))
+
+    return new_config
+
+
+def get_mean_by_name(name):
+    if name == 'dpn':
+        return IMAGENET_DPN_MEAN
+    elif name == 'inception' or name == 'le':
+        return IMAGENET_INCEPTION_MEAN
+    else:
+        return IMAGENET_DEFAULT_MEAN
+
+
+def get_std_by_name(name):
+    if name == 'dpn':
+        return IMAGENET_DPN_STD
+    elif name == 'inception' or name == 'le':
+        return IMAGENET_INCEPTION_STD
+    else:
+        return IMAGENET_DEFAULT_STD
+
+
+def get_mean_by_model(model_name):
+    model_name = model_name.lower()
+    if 'dpn' in model_name:
+        return IMAGENET_DPN_STD
+    elif 'ception' in model_name or 'nasnet' in model_name:
+        return IMAGENET_INCEPTION_MEAN
+    else:
+        return IMAGENET_DEFAULT_MEAN
+
+
+def get_std_by_model(model_name):
+    model_name = model_name.lower()
+    if 'dpn' in model_name:
+        return IMAGENET_DEFAULT_STD
+    elif 'ception' in model_name or 'nasnet' in model_name:
+        return IMAGENET_INCEPTION_STD
+    else:
+        return IMAGENET_DEFAULT_STD

data/constants.py

@@ -0,0 +1,7 @@
+DEFAULT_CROP_PCT = 0.875
+IMAGENET_DEFAULT_MEAN = (0.485, 0.456, 0.406)
+IMAGENET_DEFAULT_STD = (0.229, 0.224, 0.225)
+IMAGENET_INCEPTION_MEAN = (0.5, 0.5, 0.5)
+IMAGENET_INCEPTION_STD = (0.5, 0.5, 0.5)
+IMAGENET_DPN_MEAN = (124 / 255, 117 / 255, 104 / 255)
+IMAGENET_DPN_STD = tuple([1 / (.0167 * 255)] * 3)

data/loader.py

@@ -1,6 +1,4 @@
-import torch
 import torch.utils.data
-from data.random_erasing import RandomErasingTorch
 from data.transforms import *
 from data.distributed_sampler import OrderedDistributedSampler
 
@@ -27,7 +25,7 @@ class PrefetchLoader:
         self.mean = torch.tensor([x * 255 for x in mean]).cuda().view(1, 3, 1, 1)
         self.std = torch.tensor([x * 255 for x in std]).cuda().view(1, 3, 1, 1)
         if rand_erase_prob > 0.:
-            self.random_erasing = RandomErasingTorch(
+            self.random_erasing = RandomErasing(
                 probability=rand_erase_prob, per_pixel=rand_erase_pp)
         else:
             self.random_erasing = None

data/random_erasing.py

@@ -2,125 +2,68 @@ from __future__ import absolute_import
 
 import random
 import math
-import numpy as np
 import torch
 
 
-class RandomErasingNumpy:
+def _get_patch(per_pixel, rand_color, patch_size, dtype=torch.float32, device='cuda'):
+    if per_pixel:
+        return torch.empty(
+            patch_size, dtype=dtype, device=device).normal_()
+    elif rand_color:
+        return torch.empty((patch_size[0], 1, 1), dtype=dtype, device=device).normal_()
+    else:
+        return torch.zeros((patch_size[0], 1, 1), dtype=dtype, device=device)
+
+
+class RandomErasing:
     """ Randomly selects a rectangle region in an image and erases its pixels.
         'Random Erasing Data Augmentation' by Zhong et al.
         See https://arxiv.org/pdf/1708.04896.pdf
 
-        This 'Numpy' variant of RandomErasing is intended to be applied on a per
+        This variant of RandomErasing is intended to be applied to either a batch
-        image basis after transforming the image to uint8 numpy array in
+        or single image tensor after it has been normalized by dataset mean and std.
-        range 0-255 prior to tensor conversion and normalization
     Args:
          probability: The probability that the Random Erasing operation will be performed.
          sl: Minimum proportion of erased area against input image.
          sh: Maximum proportion of erased area against input image.
-         r1: Minimum aspect ratio of erased area.
+         min_aspect: Minimum aspect ratio of erased area.
-         mean: Erasing value.
+         per_pixel: random value for each pixel in the erase region, precedence over rand_color
+         rand_color: random color for whole erase region, 0 if neither this or per_pixel set
     """
 
     def __init__(
             self,
             probability=0.5, sl=0.02, sh=1/3, min_aspect=0.3,
-            per_pixel=False, rand_color=False,
+            per_pixel=False, rand_color=False, device='cuda'):
-            pl=0, ph=255, mean=[255 * 0.485, 255 * 0.456, 255 * 0.406],
-            out_type=np.uint8):
         self.probability = probability
-        if not per_pixel and not rand_color:
-            self.mean = np.array(mean).round().astype(out_type)
-        else:
-            self.mean = None
         self.sl = sl
         self.sh = sh
         self.min_aspect = min_aspect
-        self.pl = pl
-        self.ph = ph
         self.per_pixel = per_pixel  # per pixel random, bounded by [pl, ph]
         self.rand_color = rand_color  # per block random, bounded by [pl, ph]
-        self.out_type = out_type
+        self.device = device
 
-    def __call__(self, img):
+    def _erase(self, img, chan, img_h, img_w, dtype):
         if random.random() > self.probability:
-            return img
+            return
-
-        chan, img_h, img_w = img.shape
         area = img_h * img_w
         for attempt in range(100):
             target_area = random.uniform(self.sl, self.sh) * area
             aspect_ratio = random.uniform(self.min_aspect, 1 / self.min_aspect)
-
             h = int(round(math.sqrt(target_area * aspect_ratio)))
             w = int(round(math.sqrt(target_area / aspect_ratio)))
-            if self.rand_color:
-                c = np.random.randint(self.pl, self.ph + 1, (chan,), self.out_type)
-            elif not self.per_pixel:
-                c = self.mean[:chan]
             if w < img_w and h < img_h:
                 top = random.randint(0, img_h - h)
                 left = random.randint(0, img_w - w)
-                if self.per_pixel:
+                img[:, top:top + h, left:left + w] = _get_patch(
-                    img[:, top:top + h, left:left + w] = np.random.randint(
+                    self.per_pixel, self.rand_color, (chan, h, w), dtype=dtype, device=self.device)
-                        self.pl, self.ph + 1, (chan, h, w), self.out_type)
+                break
-                else:
-                    img[:, top:top + h, left:left + w] = c
-                return img
-
-        return img
-
-
-class RandomErasingTorch:
-    """ Randomly selects a rectangle region in an image and erases its pixels.
-        'Random Erasing Data Augmentation' by Zhong et al.
-        See https://arxiv.org/pdf/1708.04896.pdf
 
-        This 'Torch' variant of RandomErasing is intended to be applied to a full batch
+    def __call__(self, input):
-        tensor after it has been normalized by dataset mean and std.
+        if len(input.size()) == 3:
-    Args:
+            self._erase(input, *input.size(), input.dtype)
-         probability: The probability that the Random Erasing operation will be performed.
+        else:
-         sl: Minimum proportion of erased area against input image.
+            batch_size, chan, img_h, img_w = input.size()
-         sh: Maximum proportion of erased area against input image.
+            for i in range(batch_size):
-         r1: Minimum aspect ratio of erased area.
+                self._erase(input[i], chan, img_h, img_w, input.dtype)
-    """
+        return input
-
-    def __init__(
-            self,
-            probability=0.5, sl=0.02, sh=1/3, min_aspect=0.3,
-            per_pixel=False, rand_color=False):
-        self.probability = probability
-        self.sl = sl
-        self.sh = sh
-        self.min_aspect = min_aspect
-        self.per_pixel = per_pixel  # per pixel random, bounded by [pl, ph]
-        self.rand_color = rand_color  # per block random, bounded by [pl, ph]
-
-    def __call__(self, batch):
-        batch_size, chan, img_h, img_w = batch.size()
-        area = img_h * img_w
-        for i in range(batch_size):
-            if random.random() > self.probability:
-                continue
-            img = batch[i]
-            for attempt in range(100):
-                target_area = random.uniform(self.sl, self.sh) * area
-                aspect_ratio = random.uniform(self.min_aspect, 1 / self.min_aspect)
-
-                h = int(round(math.sqrt(target_area * aspect_ratio)))
-                w = int(round(math.sqrt(target_area / aspect_ratio)))
-                if self.rand_color:
-                    c = torch.empty((chan, 1, 1), dtype=batch.dtype).normal_().cuda()
-                elif not self.per_pixel:
-                    c = torch.zeros((chan, 1, 1), dtype=batch.dtype).cuda()
-                if w < img_w and h < img_h:
-                    top = random.randint(0, img_h - h)
-                    left = random.randint(0, img_w - w)
-                    if self.per_pixel:
-                        img[:, top:top + h, left:left + w] = torch.empty(
-                            (chan, h, w), dtype=batch.dtype).normal_().cuda()
-                    else:
-                        img[:, top:top + h, left:left + w] = c
-                    break
-
-        return batch

data/transforms.py

@@ -1,118 +1,14 @@
 import torch
 from torchvision import transforms
+import torchvision.transforms.functional as F
 from PIL import Image
+import warnings
 import math
+import random
 import numpy as np
-from data.random_erasing import RandomErasingNumpy
-
-DEFAULT_CROP_PCT = 0.875
-
-IMAGENET_DEFAULT_MEAN = (0.485, 0.456, 0.406)
-IMAGENET_DEFAULT_STD = (0.229, 0.224, 0.225)
-IMAGENET_INCEPTION_MEAN = (0.5, 0.5, 0.5)
-IMAGENET_INCEPTION_STD = (0.5, 0.5, 0.5)
-IMAGENET_DPN_MEAN = (124 / 255, 117 / 255, 104 / 255)
-IMAGENET_DPN_STD = tuple([1 / (.0167 * 255)] * 3)
-
-
-def resolve_data_config(model, args, default_cfg={}, verbose=True):
-    new_config = {}
-    default_cfg = default_cfg
-    if not default_cfg and hasattr(model, 'default_cfg'):
-        default_cfg = model.default_cfg
-
-    # Resolve input/image size
-    # FIXME grayscale/chans arg to use different # channels?
-    in_chans = 3
-    input_size = (in_chans, 224, 224)
-    if args.img_size is not None:
-        # FIXME support passing img_size as tuple, non-square
-        assert isinstance(args.img_size, int)
-        input_size = (in_chans, args.img_size, args.img_size)
-    elif 'input_size' in default_cfg:
-        input_size = default_cfg['input_size']
-    new_config['input_size'] = input_size
-
-    # resolve interpolation method
-    new_config['interpolation'] = 'bilinear'
-    if args.interpolation:
-        new_config['interpolation'] = args.interpolation
-    elif 'interpolation' in default_cfg:
-        new_config['interpolation'] = default_cfg['interpolation']
-
-    # resolve dataset + model mean for normalization
-    new_config['mean'] = get_mean_by_model(args.model)
-    if args.mean is not None:
-        mean = tuple(args.mean)
-        if len(mean) == 1:
-            mean = tuple(list(mean) * in_chans)
-        else:
-            assert len(mean) == in_chans
-        new_config['mean'] = mean
-    elif 'mean' in default_cfg:
-        new_config['mean'] = default_cfg['mean']
-
-    # resolve dataset + model std deviation for normalization
-    new_config['std'] = get_std_by_model(args.model)
-    if args.std is not None:
-        std = tuple(args.std)
-        if len(std) == 1:
-            std = tuple(list(std) * in_chans)
-        else:
-            assert len(std) == in_chans
-        new_config['std'] = std
-    elif 'std' in default_cfg:
-        new_config['std'] = default_cfg['std']
-
-    # resolve default crop percentage
-    new_config['crop_pct'] = DEFAULT_CROP_PCT
-    if 'crop_pct' in default_cfg:
-        new_config['crop_pct'] = default_cfg['crop_pct']
-
-    if verbose:
-        print('Data processing configuration for current model + dataset:')
-        for n, v in new_config.items():
-            print('\t%s: %s' % (n, str(v)))
-
-    return new_config
 
-
+from data import DEFAULT_CROP_PCT, IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
-def get_mean_by_name(name):
+from data.random_erasing import RandomErasing
-    if name == 'dpn':
-        return IMAGENET_DPN_MEAN
-    elif name == 'inception' or name == 'le':
-        return IMAGENET_INCEPTION_MEAN
-    else:
-        return IMAGENET_DEFAULT_MEAN
-
-
-def get_std_by_name(name):
-    if name == 'dpn':
-        return IMAGENET_DPN_STD
-    elif name == 'inception' or name == 'le':
-        return IMAGENET_INCEPTION_STD
-    else:
-        return IMAGENET_DEFAULT_STD
-
-
-def get_mean_by_model(model_name):
-    model_name = model_name.lower()
-    if 'dpn' in model_name:
-        return IMAGENET_DPN_STD
-    elif 'ception' in model_name or 'nasnet' in model_name:
-        return IMAGENET_INCEPTION_MEAN
-    else:
-        return IMAGENET_DEFAULT_MEAN
-
-
-def get_std_by_model(model_name):
-    model_name = model_name.lower()
-    if 'dpn' in model_name:
-        return IMAGENET_DEFAULT_STD
-    elif 'ception' in model_name or 'nasnet' in model_name:
-        return IMAGENET_INCEPTION_STD
-    else:
-        return IMAGENET_DEFAULT_STD
 
 
 class ToNumpy:
@@ -138,6 +34,16 @@ class ToTensor:
         return torch.from_numpy(np_img).to(dtype=self.dtype)
 
 
+_pil_interpolation_to_str = {
+    Image.NEAREST: 'PIL.Image.NEAREST',
+    Image.BILINEAR: 'PIL.Image.BILINEAR',
+    Image.BICUBIC: 'PIL.Image.BICUBIC',
+    Image.LANCZOS: 'PIL.Image.LANCZOS',
+    Image.HAMMING: 'PIL.Image.HAMMING',
+    Image.BOX: 'PIL.Image.BOX',
+}
+
+
 def _pil_interp(method):
     if method == 'bicubic':
         return Image.BICUBIC
@@ -150,21 +56,118 @@ def _pil_interp(method):
         return Image.BILINEAR
 
 
+RANDOM_INTERPOLATION = (Image.BILINEAR, Image.BICUBIC)
+
+
+class RandomResizedCropAndInterpolation(object):
+    """Crop the given PIL Image to random size and aspect ratio with random interpolation.
+
+    A crop of random size (default: of 0.08 to 1.0) of the original size and a random
+    aspect ratio (default: of 3/4 to 4/3) of the original aspect ratio is made. This crop
+    is finally resized to given size.
+    This is popularly used to train the Inception networks.
+
+    Args:
+        size: expected output size of each edge
+        scale: range of size of the origin size cropped
+        ratio: range of aspect ratio of the origin aspect ratio cropped
+        interpolation: Default: PIL.Image.BILINEAR
+    """
+
+    def __init__(self, size, scale=(0.08, 1.0), ratio=(3. / 4., 4. / 3.),
+                 interpolation='bilinear'):
+        if isinstance(size, tuple):
+            self.size = size
+        else:
+            self.size = (size, size)
+        if (scale[0] > scale[1]) or (ratio[0] > ratio[1]):
+            warnings.warn("range should be of kind (min, max)")
+
+        if interpolation == 'random':
+            self.interpolation = RANDOM_INTERPOLATION
+        else:
+            self.interpolation = _pil_interp(interpolation)
+        self.scale = scale
+        self.ratio = ratio
+
+    @staticmethod
+    def get_params(img, scale, ratio):
+        """Get parameters for ``crop`` for a random sized crop.
+
+        Args:
+            img (PIL Image): Image to be cropped.
+            scale (tuple): range of size of the origin size cropped
+            ratio (tuple): range of aspect ratio of the origin aspect ratio cropped
+
+        Returns:
+            tuple: params (i, j, h, w) to be passed to ``crop`` for a random
+                sized crop.
+        """
+        area = img.size[0] * img.size[1]
+
+        for attempt in range(10):
+            target_area = random.uniform(*scale) * area
+            aspect_ratio = random.uniform(*ratio)
+
+            w = int(round(math.sqrt(target_area * aspect_ratio)))
+            h = int(round(math.sqrt(target_area / aspect_ratio)))
+
+            if random.random() < 0.5 and min(ratio) <= (h / w) <= max(ratio):
+                w, h = h, w
+
+            if w <= img.size[0] and h <= img.size[1]:
+                i = random.randint(0, img.size[1] - h)
+                j = random.randint(0, img.size[0] - w)
+                return i, j, h, w
+
+        # Fallback
+        w = min(img.size[0], img.size[1])
+        i = (img.size[1] - w) // 2
+        j = (img.size[0] - w) // 2
+        return i, j, w, w
+
+    def __call__(self, img):
+        """
+        Args:
+            img (PIL Image): Image to be cropped and resized.
+
+        Returns:
+            PIL Image: Randomly cropped and resized image.
+        """
+        i, j, h, w = self.get_params(img, self.scale, self.ratio)
+        if isinstance(self.interpolation, (tuple, list)):
+            interpolation = random.choice(self.interpolation)
+        else:
+            interpolation = self.interpolation
+        return F.resized_crop(img, i, j, h, w, self.size, interpolation)
+
+    def __repr__(self):
+        if isinstance(self.interpolation, (tuple, list)):
+            interpolate_str = ' '.join([_pil_interpolation_to_str[x] for x in self.interpolation])
+        else:
+            interpolate_str = _pil_interpolation_to_str[self.interpolation]
+        format_string = self.__class__.__name__ + '(size={0}'.format(self.size)
+        format_string += ', scale={0}'.format(tuple(round(s, 4) for s in self.scale))
+        format_string += ', ratio={0}'.format(tuple(round(r, 4) for r in self.ratio))
+        format_string += ', interpolation={0})'.format(interpolate_str)
+        return format_string
+
+
 def transforms_imagenet_train(
         img_size=224,
-        scale=(0.1, 1.0),
+        scale=(0.08, 1.0),
         color_jitter=(0.4, 0.4, 0.4),
-        interpolation='bilinear',
+        interpolation='random',
         random_erasing=0.4,
+        random_erasing_pp=True,
         use_prefetcher=False,
         mean=IMAGENET_DEFAULT_MEAN,
         std=IMAGENET_DEFAULT_STD
 ):
 
     tfl = [
-        transforms.RandomResizedCrop(
+        RandomResizedCropAndInterpolation(
-            img_size, scale=scale,
+            img_size, scale=scale, interpolation=interpolation),
-            interpolation=_pil_interp(interpolation)),
         transforms.RandomHorizontalFlip(),
         transforms.ColorJitter(*color_jitter),
     ]
@@ -174,13 +177,13 @@ def transforms_imagenet_train(
         tfl += [ToNumpy()]
     else:
         tfl += [
-            ToTensor(),
+            transforms.ToTensor(),
             transforms.Normalize(
                 mean=torch.tensor(mean),
                 std=torch.tensor(std))
         ]
         if random_erasing > 0.:
-            tfl.append(RandomErasingNumpy(random_erasing, per_pixel=True))
+            tfl.append(RandomErasing(random_erasing, per_pixel=random_erasing_pp, device='cpu'))
     return transforms.Compose(tfl)
 
 

models/densenet.py

@@ -9,7 +9,7 @@ from collections import OrderedDict
 
 from models.helpers import load_pretrained
 from models.adaptive_avgmax_pool import *
-from data.transforms import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
+from data import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
 import re
 
 __all__ = ['DenseNet', 'densenet121', 'densenet169', 'densenet201', 'densenet161']

models/dpn.py

@@ -17,7 +17,7 @@ from collections import OrderedDict
 
 from models.helpers import load_pretrained
 from models.adaptive_avgmax_pool import select_adaptive_pool2d
-from data.transforms import IMAGENET_DPN_MEAN, IMAGENET_DPN_STD
+from data import IMAGENET_DPN_MEAN, IMAGENET_DPN_STD
 
 __all__ = ['DPN', 'dpn68', 'dpn92', 'dpn98', 'dpn131', 'dpn107']
 

models/genmobilenet.py

@@ -24,7 +24,7 @@ import torch.nn.functional as F
 from models.helpers import load_pretrained
 from models.adaptive_avgmax_pool import SelectAdaptivePool2d
 from models.conv2d_same import sconv2d
-from data.transforms import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
+from data import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
 
 __all__ = ['GenMobileNet', 'mnasnet_050', 'mnasnet_075', 'mnasnet_100', 'mnasnet_140',
            'semnasnet_050', 'semnasnet_075', 'semnasnet_100', 'semnasnet_140', 'mnasnet_small',

models/inception_resnet_v2.py

@@ -7,8 +7,7 @@ import torch.nn as nn
 import torch.nn.functional as F
 from models.helpers import load_pretrained
 from models.adaptive_avgmax_pool import *
-from data.transforms import IMAGENET_INCEPTION_MEAN, IMAGENET_INCEPTION_STD
+from data import IMAGENET_INCEPTION_MEAN, IMAGENET_INCEPTION_STD
-
 
 default_cfgs = {
     'inception_resnet_v2': {

models/inception_v4.py

@@ -7,8 +7,7 @@ import torch.nn as nn
 import torch.nn.functional as F
 from models.helpers import load_pretrained
 from models.adaptive_avgmax_pool import *
-from data.transforms import IMAGENET_INCEPTION_MEAN, IMAGENET_INCEPTION_STD
+from data import IMAGENET_INCEPTION_MEAN, IMAGENET_INCEPTION_STD
-
 
 default_cfgs = {
     'inception_v4': {

models/resnet.py

@@ -10,7 +10,7 @@ import torch.nn.functional as F
 import math
 from models.helpers import load_pretrained
 from models.adaptive_avgmax_pool import SelectAdaptivePool2d
-from data.transforms import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
+from data import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
 
 __all__ = ['ResNet', 'resnet18', 'resnet34', 'resnet50', 'resnet101', 'resnet152',
            'resnext50_32x4d', 'resnext101_32x4d', 'resnext101_64x4d', 'resnext152_32x4d']

models/senet.py

@@ -17,7 +17,7 @@ import torch.nn.functional as F
 
 from models.helpers import load_pretrained
 from models.adaptive_avgmax_pool import SelectAdaptivePool2d
-from data.transforms import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
+from data import IMAGENET_DEFAULT_MEAN, IMAGENET_DEFAULT_STD
 
 __all__ = ['SENet', 'senet154', 'seresnet50', 'seresnet101', 'seresnet152',
            'seresnext50_32x4d', 'seresnext101_32x4d']

train.py

@@ -10,7 +10,7 @@ try:
 except ImportError:
     has_apex = False
 
-from data import *
+from data import Dataset, create_loader, resolve_data_config
 from models import create_model, resume_checkpoint
 from utils import *
 from loss import LabelSmoothingCrossEntropy, SparseLabelCrossEntropy
@@ -224,7 +224,7 @@ def main():
         use_prefetcher=True,
         rand_erase_prob=args.reprob,
         rand_erase_pp=args.repp,
-        interpolation=data_config['interpolation'],
+        interpolation='random',  # FIXME cleanly resolve this? data_config['interpolation'],
         mean=data_config['mean'],
         std=data_config['std'],
         num_workers=args.workers,