class_docstr: OTB Visual Tracker Benchmark.
  
  Parameters
  ----------
  name : str
      name to data, and name to dataset json Default is 'OTB2015'
  dataset_root: str
      path to dataset root
class_docstr_tok: ["OTB","Visual","Tracker","Benchmark",".","Parameters","--","--","--","--","--","name",":","str","name","to","data",",","and","name","to","dataset","json","Default","is","'OTB2015'","dataset_root",":","str","path","to","dataset","root"]
docstr: Args:
      path: path to tracker results,
      tracker_names: list of tracker name
docstr_tok: ["Args",":","path",":","path","to","tracker","results",",","tracker_names",":","list","of","tracker","name"]
code: def set_tracker(self, path, tracker_names):
      """
      Args:
          path: path to tracker results,
          tracker_names: list of tracker name
      """
      self.tracker_path = path
      self.tracker_names = tracker_names
  
imports: import json
  import os
  from glob import glob
  from tqdm import tqdm
  from mxnet.gluon.data import dataset
  from gluoncv.utils.filesystem import try_import_cv2
label_desc: Use image node_id 4 for calling the OTBTracking obj's underlying member method code with example usage: obj.set_tracker(path, tracker_names) without return types