current_depthcrop_location = raw_depth_df[(raw_depth_df.category == current_category)
                                                      & (raw_depth_df.instance_number == current_instance_number)
                                                      & (raw_depth_df.video_no == current_video_no)
                                                      & (raw_depth_df.frame_no == current_frame_no)].location.values[0]