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1from urllib.request import urlopen
2from PIL import Image
3import timm
4
5img = Image.open(urlopen(
6 'https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/beignets-task-guide.png'
7))
8
9model = timm.create_model('swin_tiny_patch4_window7_224.ms_in22k', pretrained=True)
10model = model.eval()
11
12# get model specific transforms (normalization, resize)
13data_config = timm.data.resolve_model_data_config(model)
14transforms = timm.data.create_transform(**data_config, is_training=False)
15
16output = model(transforms(img).unsqueeze(0)) # unsqueeze single image into batch of 1
17
18top5_probabilities, top5_class_indices = torch.topk(output.softmax(dim=1) * 100, k=5)1from urllib.request import urlopen
2from PIL import Image
3import timm
4
5img = Image.open(urlopen(
6 'https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/beignets-task-guide.png'
7))
8
9model = timm.create_model(
10 'swin_tiny_patch4_window7_224.ms_in22k',
11 pretrained=True,
12 features_only=True,
13)
14model = model.eval()
15
16# get model specific transforms (normalization, resize)
17data_config = timm.data.resolve_model_data_config(model)
18transforms = timm.data.create_transform(**data_config, is_training=False)
19
20output = model(transforms(img).unsqueeze(0)) # unsqueeze single image into batch of 1
21
22for o in output:
23 # print shape of each feature map in output
24 # e.g. for swin_base_patch4_window7_224 (NHWC output)
25 # torch.Size([1, 56, 56, 128])
26 # torch.Size([1, 28, 28, 256])
27 # torch.Size([1, 14, 14, 512])
28 # torch.Size([1, 7, 7, 1024])
29 # e.g. for swinv2_cr_small_ns_224 (NCHW output)
30 # torch.Size([1, 96, 56, 56])
31 # torch.Size([1, 192, 28, 28])
32 # torch.Size([1, 384, 14, 14])
33 # torch.Size([1, 768, 7, 7])
34 print(o.shape)1from urllib.request import urlopen
2from PIL import Image
3import timm
4
5img = Image.open(urlopen(
6 'https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/beignets-task-guide.png'
7))
8
9model = timm.create_model(
10 'swin_tiny_patch4_window7_224.ms_in22k',
11 pretrained=True,
12 num_classes=0, # remove classifier nn.Linear
13)
14model = model.eval()
15
16# get model specific transforms (normalization, resize)
17data_config = timm.data.resolve_model_data_config(model)
18transforms = timm.data.create_transform(**data_config, is_training=False)
19
20output = model(transforms(img).unsqueeze(0)) # output is (batch_size, num_features) shaped tensor
21
22# or equivalently (without needing to set num_classes=0)
23
24output = model.forward_features(transforms(img).unsqueeze(0))
25# output is unpooled (ie.e a (batch_size, H, W, num_features) tensor for swin / swinv2
26# or (batch_size, num_features, H, W) for swinv2_cr
27
28output = model.forward_head(output, pre_logits=True)
29# output is (batch_size, num_features) tensor1@inproceedings{liu2021Swin,
2 title={Swin Transformer: Hierarchical Vision Transformer using Shifted Windows},
3 author={Liu, Ze and Lin, Yutong and Cao, Yue and Hu, Han and Wei, Yixuan and Zhang, Zheng and Lin, Stephen and Guo, Baining},
4 booktitle={Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV)},
5 year={2021}
6}1@misc{rw2019timm,
2 author = {Ross Wightman},
3 title = {PyTorch Image Models},
4 year = {2019},
5 publisher = {GitHub},
6 journal = {GitHub repository},
7 doi = {10.5281/zenodo.4414861},
8 howpublished = {\url{https://github.com/huggingface/pytorch-image-models}}
9}