Create u2net.py

u2net.py

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+import torch
+import torch.nn as nn
+import torch.nn.functional as F
+
+# Simplified U2Net architecture would go here
+# For actual implementation, you'd want to import from the original repo
+
+def load_model(model_name):
+    model_urls = {
+        "u2net": "https://github.com/xuebinqin/U-2-Net/raw/master/models/u2net.pth",
+        "u2net_human_seg": "https://github.com/xuebinqin/U-2-Net/raw/master/models/u2net_human_seg.pth"
+    }
+    model = U2Net()  # This would be the actual U2Net class
+    model.load_state_dict(torch.hub.load_state_dict_from_url(model_urls[model_name]))
+    return model