Update app.py

app.py

@@ -24,7 +24,7 @@ def predict(model, image, detection_threshold: float = 0.5):
     return samples[0]["img"], preds[0]
     
 
-def show_preds(input_image, detection_threshold):
+def show_preds(input_image, detection_threshold=0.5):
     if detection_threshold==0: detection_threshold=0.5
 
     img, pred = predict(model=model, image=input_image, detection_threshold=detection_threshold)