Update app.py

app.py

@@ -1,7 +1,46 @@
+from pathlib import Path
+import torch
 import gradio as gr
+from torch import nn
 
-def greet(name):
-    return "Hello " + name + "!!"
+LABELS = Path("class_names.txt").read_text().splitlines()
 
-iface = gr.Interface(fn=greet, inputs="text", outputs="text")
-iface.launch()
+model = nn.Sequential(
+    nn.Conv2d(1, 32, 3, padding="same"),
+    nn.ReLU(),
+    nn.MaxPool2d(2),
+    nn.Conv2d(32, 64, 3, padding="same"),
+    nn.ReLU(),
+    nn.MaxPool2d(2),
+    nn.Conv2d(64, 128, 3, padding="same"),
+    nn.ReLU(),
+    nn.MaxPool2d(2),
+    nn.Flatten(),
+    nn.Linear(1152, 256),
+    nn.ReLU(),
+    nn.Linear(256, len(LABELS)),
+)
+state_dict = torch.load("pytorch_model.bin", map_location="cpu")
+model.load_state_dict(state_dict, strict=False)
+model.eval()
+
+
+def predict(im):
+    x = torch.tensor(im, dtype=torch.float32).unsqueeze(0).unsqueeze(0) / 255.0
+    with torch.no_grad():
+        out = model(x)
+    probabilities = torch.nn.functional.softmax(out[0], dim=0)
+    values, indices = torch.topk(probabilities, 5)
+    return {LABELS[i]: v.item() for i, v in zip(indices, values)}
+
+interface = gr.Interface(
+    predict,
+    inputs="sketchpad",
+    outputs="label",
+    theme="huggingface",
+    title="Sketch Recognition",
+    description="Who wants to play Pictionary? Draw a common object like a shovel or a laptop, and the algorithm will guess in real time!",
+    article="<p style='text-align: center'>Sketch Recognition | Demo Model</p>",
+    live=True,
+)
+interface.launch(share=True)