update

configs/COCO-InstanceSegmentation/voc_irn.yaml

@@ -4,6 +4,8 @@ MODEL:
   MASK_ON: True
   RESNETS:
     DEPTH: 50
+  ROI_HEADS:
+    NUM_CLASSES: 20
 DATASETS:
   TRAIN: ("voc_2012_seg_train_irn",)
   TEST: ("voc_2012_seg_val",)