class_docstr: Superclass for different types of KITTI dataset loaders
      
class_docstr_tok: ["Superclass","for","different","types","of","KITTI","dataset","loaders"]
code: def check_depth(self):
      line = self.filenames[0].split()
      scene_name = line[0]
      frame_index = int(line[1])
  
      velo_filename = os.path.join(
          self.data_path,
          scene_name,
          "velodyne_points/data/{:010d}.bin".format(int(frame_index)),
      )
  
      return os.path.isfile(velo_filename)
  
imports: from __future__ import absolute_import, division, print_function
  import os
  import numpy
  import PIL.Image
  from ...utils.filesystem import try_import_skimage
  from .kitti_utils import generate_depth_map
  from .mono_dataset import MonoDataset
label_desc: Use image node_id 2 for calling the KITTIDataset obj's underlying member method code with example usage: obj.check_depth() and returns: os