Fix `TORCHVISION_0_18` for `allow_empty=True` (#14415)

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>

ultralytics/data/dataset.py

@@ -15,7 +15,7 @@ from torch.utils.data import ConcatDataset
 
 from ultralytics.utils import LOCAL_RANK, NUM_THREADS, TQDM, colorstr
 from ultralytics.utils.ops import resample_segments
-from ultralytics.utils.torch_utils import TORCH_1_13
+from ultralytics.utils.torch_utils import TORCHVISION_0_18
 
 from .augment import (
     Compose,
@@ -417,7 +417,7 @@ class ClassificationDataset:
         import torchvision  # scope for faster 'import ultralytics'
 
         # Base class assigned as attribute rather than used as base class to allow for scoping slow torchvision import
-        if TORCH_1_13:  # 'allow_empty' argument first introduced in torch 1.13
+        if TORCHVISION_0_18:  # 'allow_empty' argument first introduced in torchvision 0.18
             self.base = torchvision.datasets.ImageFolder(root=root, allow_empty=True)
         else:
             self.base = torchvision.datasets.ImageFolder(root=root)

ultralytics/utils/torch_utils.py

@@ -40,6 +40,7 @@ TORCH_2_0 = check_version(torch.__version__, "2.0.0")
 TORCHVISION_0_10 = check_version(TORCHVISION_VERSION, "0.10.0")
 TORCHVISION_0_11 = check_version(TORCHVISION_VERSION, "0.11.0")
 TORCHVISION_0_13 = check_version(TORCHVISION_VERSION, "0.13.0")
+TORCHVISION_0_18 = check_version(TORCHVISION_VERSION, "0.18.0")
 
 
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