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Create app.py
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app.py
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import torch
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from PIL import Image
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from torchvision import transforms
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import gradio as gr
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model = torch.hub.load('facebookresearch/WSL-Images', 'resnext101_32x8d_wsl')
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# or
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# model = torch.hub.load('facebookresearch/WSL-Images', 'resnext101_32x16d_wsl')
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# or
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# model = torch.hub.load('facebookresearch/WSL-Images', 'resnext101_32x32d_wsl')
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# or
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#model = torch.hub.load('facebookresearch/WSL-Images', 'resnext101_32x48d_wsl')
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model.eval()
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# Download an example image from the pytorch website
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import urllib
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url, filename = ("https://github.com/pytorch/hub/raw/master/images/dog.jpg", "dog.jpg")
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try: urllib.URLopener().retrieve(url, filename)
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except: urllib.request.urlretrieve(url, filename)
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def inference(input_image):
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preprocess = transforms.Compose([
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transforms.Resize(256),
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transforms.CenterCrop(224),
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transforms.ToTensor(),
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transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]),
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])
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input_tensor = preprocess(input_image)
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input_batch = input_tensor.unsqueeze(0) # create a mini-batch as expected by the model
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# move the input and model to GPU for speed if available
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if torch.cuda.is_available():
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input_batch = input_batch.to('cuda')
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model.to('cuda')
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with torch.no_grad():
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output = model(input_batch)
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# The output has unnormalized scores. To get probabilities, you can run a softmax on it.
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probabilities = torch.nn.functional.softmax(output[0], dim=0)
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# Download ImageNet labels
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!wget https://raw.githubusercontent.com/pytorch/hub/master/imagenet_classes.txt
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# Read the categories
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with open("imagenet_classes.txt", "r") as f:
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categories = [s.strip() for s in f.readlines()]
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# Show top categories per image
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top5_prob, top5_catid = torch.topk(probabilities, 5)
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result = {}
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for i in range(top5_prob.size(0)):
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result[categories[top5_catid[i]]] = top5_prob[i].item()
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return result
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inputs = gr.inputs.Image(type='pil')
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outputs = gr.outputs.Label(type="confidences",num_top_classes=5)
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title = "RESNEXT WSL"
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description = "Gradio demo for RESNEXT WSL, ResNext models trained with billion scale weakly-supervised data. To use it, simply upload your image, or click one of the examples to load them. Read more at the links below."
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article = "<p style='text-align: center'><a href='https://arxiv.org/abs/1805.00932'>Exploring the Limits of Weakly Supervised Pretraining</a> | <a href='https://github.com/facebookresearch/WSL-Images/blob/master/hubconf.py'>Github Repo</a></p>"
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examples = [
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['dog.jpg']
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]
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gr.Interface(inference, inputs, outputs, title=title, description=description, article=article, examples=examples, analytics_enabled=False).launch()
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