[Feature] Support entire PAConv and PAConvCUDA models (#783)

* add PAConv decode head

* add config files

* add paconv's correlation loss

* support reg loss in Segmentor class

* minor fix

* add augmentation to configs

* fix ed7 in cfg

* fix bug in corr loss

* enable syncbn in paconv

* rename to loss_regularization

* rename loss_reg to loss_regularize

* use SyncBN

* change weight kernels to kernel weights

* rename corr_loss to reg_loss

* minor fix

* configs fix IndoorPatchPointSample

* fix grouped points minus center error

* update transform_3d & add configs

* merge master

* fix enlarge_size bug

* refine config

* remove cfg files

* minor fix

* add comments on PAConv's ScoreNet

* refine comments

* update compatibility doc

* remove useless lines in transforms_3d

* rename with_loss_regularization to with_regularization_loss

* revert palette change

* remove xavier init from PAConv's ScoreNet

tools/test.py

@@ -178,6 +178,11 @@ def main():
         model.CLASSES = checkpoint['meta']['CLASSES']
     else:
         model.CLASSES = dataset.CLASSES
+    # palette for visualization in segmentation tasks
+    if 'PALETTE' in checkpoint.get('meta', {}):
+        model.PALETTE = checkpoint['meta']['PALETTE']
+    else:
+        model.PALETTE = dataset.PALETTE
 
     if not distributed:
         model = MMDataParallel(model, device_ids=[0])