Update app.py

app.py

@@ -29,11 +29,12 @@ cfg.MODEL.DEVICE='cpu'
 cfg.MODEL.ROI_HEADS.SCORE_THRESH_TEST = 0.5 
 cfg.MODEL.WEIGHTS = "model_weights/chatswood_buildings_poc.pth"  
 cfg.MODEL.ROI_HEADS.NUM_CLASSES = 8
+predictor = DefaultPredictor(cfg)
 
 def segment_buildings(im):
 
     outputs = predictor(im)
-    v = Visualizer(im[:, :, ::-1], MetadataCatalog.get(cfg.DATASETS.TRAIN[0]), scale=1.2)
+    v = Visualizer(im[:, :, ::-1], scale=1.2)
     out = v.draw_instance_predictions(outputs["instances"].to("cpu"))
     return Image.fromarray(np.uint8(out.get_image())).convert('RGB')