[Fix] Fix the __repr__ in NuScenesDataset (#1831)

* force the mask as bool

* fix config name

* Revert "fix config name"

This reverts commit 99fc6445d9a49824b61692bcdd374eabd0ef3200.

* remove type convert

* minor changes

* fix docs

mmdet3d/datasets/transforms/transforms_3d.py

@@ -423,13 +423,9 @@ class ObjectSample(BaseTransform):
     def __repr__(self):
         """str: Return a string that describes the module."""
         repr_str = self.__class__.__name__
+        repr_str += f'db_sampler={self.db_sampler},'
         repr_str += f' sample_2d={self.sample_2d},'
-        repr_str += f' data_root={self.sampler_cfg.data_root},'
-        repr_str += f' info_path={self.sampler_cfg.info_path},'
-        repr_str += f' rate={self.sampler_cfg.rate},'
-        repr_str += f' prepare={self.sampler_cfg.prepare},'
-        repr_str += f' classes={self.sampler_cfg.classes},'
-        repr_str += f' sample_groups={self.sampler_cfg.sample_groups}'
+        repr_str += f' use_ground_plane={self.use_ground_plane}'
         return repr_str
 
 

mmdet3d/models/layers/fusion_layers/point_fusion.py

@@ -56,7 +56,7 @@ def point_sample(img_meta,
     points = apply_3d_transformation(
         points, coord_type, img_meta, reverse=True)
 
-    # project points to camera coordinate
+    # project points to image coordinate
     pts_2d = points_cam2img(points, proj_mat)
 
     # img transformation: scale -> crop -> flip