fix infer bug

app.py

@@ -101,6 +101,8 @@ def recognize_image(input_img, model_type):
         model = model_small.to(device)
     else:
         model = model_tiny.to(device)
+
+    model.eval()
         
     if len(input_img.shape) == 3:
             input_img = input_img[:, :, ::-1].copy()