app.py

from transformers import AutoModelForImageClassification, AutoImageProcessor
import torch
from PIL import Image
import gradio as gr

model_name = "codewithdark/vit-chest-xray"
model = AutoModelForImageClassification.from_pretrained(model_name)
processor = AutoImageProcessor.from_pretrained(model_name)
model.eval()

labels = ['Cardiomegaly', 'Edema', 'Consolidation', 'No Finding', 'Pneumonia']
target_labels = ['Pneumonia', 'Consolidation', 'Edema']
target_idxs = [labels.index(lbl) for lbl in target_labels]

def predict(image):
# Make sure image is RGB
if image.mode != "RGB":
image = image.convert("RGB")

```
# Process the image properly
inputs = processor(images=image, return_tensors="pt")

with torch.no_grad():
    logits = model(**inputs).logits

# Keep batch dimension for safety
probs = torch.sigmoid(logits)[0]  # [batch, num_labels] -> [num_labels]

detected = []
results = []
for idx, lbl in zip(target_idxs, target_labels):
    prob = probs[idx].item()
    status = "YES" if prob > 0.5 else "NO"
    results.append(f"{lbl}: {status} ({prob:.2f})")
    if status == "YES":
        detected.append(lbl)

if detected:
    summary = f"⚠️ Patient shows signs of: {', '.join(detected)}."
else:
    summary = "✅ Patient appears healthy — no major lung issues detected."

return "\n".join(results + ["\n" + summary])
```

iface = gr.Interface(
fn=predict,
inputs=gr.Image(type="pil"),
outputs="text",
title="Chest X-ray Disease Detector",
description="Upload a chest X-ray to detect Pneumonia, Consolidation, and Edema. Gives clear patient health summary."
)

iface.launch()