Refactor inference function in app.py to accept image directly instead of file path, simplifying the input process.

app.py

@@ -53,9 +53,8 @@ model.hor_conf_thresh = 0.1
 
 
 # @spaces.GPU
-def inference(image_fp):
+def inference(image):
     """Run inference on image and return annotated image."""
-    image = imread(image_fp)
     results = model(image)
     return results.draw(image)