input_stream: "image_cpu_frames"
input_stream: "start_pos"
input_stream: "cancel_object_id"
input_stream: "ra_track"
input_stream: "restart_pos"
input_stream: "track_time"

num_threads: 4

node: {
  calculator: "MotionAnalysisCalculator"
  options: {
    [mediapipe.MotionAnalysisCalculatorOptions.ext]: {
      analysis_options: {
        analysis_policy: ANALYSIS_POLICY_CAMERA_MOBILE

        flow_options: {
          # Maybe move down to 50
          fast_estimation_min_block_size: 100
          top_inlier_sets: 1
          frac_inlier_error_threshold: 3e-3
          # For mobile application, downsample before input into graph
          # and use DOWNSAMPLE_TO_INPUT_SIZE and specify
          # downsampling_factor option or DOWNSAMPLE input_side_packet
          downsample_mode: DOWNSAMPLE_TO_INPUT_SIZE
          verification_distance: 5.0
          verify_long_feature_acceleration: true
          verify_long_feature_trigger_ratio: 0.1
          tracking_options: {
            max_features: 500
            corner_extraction_method: EXTRACTION_FAST
            adaptive_extraction_levels: 2
            min_eig_val_settings: {
              adaptive_lowest_quality_level: 2e-4
            }
            klt_tracker_implementation: KLT_OPENCV
          }
        }
      }
    }
  }

  # Drops packets if calculator cannot keep up with the input rate.
  input_stream_handler: {
    input_stream_handler: "FixedSizeInputStreamHandler"
  }

  input_stream: "VIDEO:image_cpu_frames"
  input_side_packet: "DOWNSAMPLE:analysis_downsample_factor"
  input_side_packet: "OPTIONS:calculator_options"
  output_stream: "CAMERA:camera_motion"
  output_stream: "FLOW:region_flow"
}

node: {
  calculator: "FlowPackagerCalculator"

  input_stream: "FLOW:region_flow"
  input_stream: "CAMERA:camera_motion"
  output_stream: "TRACKING:tracking_data"
  options: {
    [mediapipe.FlowPackagerCalculatorOptions.ext]: {
      flow_packager_options: {
        binary_tracking_data_support: false
      }
    }
  }
}

node: {
  calculator: "BoxTrackerCalculator"

  input_side_packet: "OPTIONS:calculator_options"
  input_stream: "TRACKING:tracking_data"
  input_stream: "TRACK_TIME:track_time"
  input_stream: "START_POS:start_pos"
  input_stream: "RESTART_POS:restart_pos"
  input_stream: "CANCEL_OBJECT_ID:cancel_object_id"
  input_stream: "RA_TRACK:ra_track"
  output_stream: "BOXES:boxes"
  output_stream: "RA_BOXES:ra_boxes"

  input_stream_handler: {
    input_stream_handler: "SyncSetInputStreamHandler"
    options: {
      [mediapipe.SyncSetInputStreamHandlerOptions.ext]: {
        sync_set: {
          tag_index: "TRACKING"
          tag_index: "TRACK_TIME"
        }
        sync_set: {
          tag_index: "START_POS"
        }
        sync_set: {
          tag_index: "RESTART_POS"
        }
        sync_set: {
          tag_index: "CANCEL_OBJECT_ID"
        }
        sync_set: {
          tag_index: "RA_TRACK"
        }
      }
    }
  }

  options: {
    [mediapipe.BoxTrackerCalculatorOptions.ext]: {
      tracker_options: {
        track_step_options: {
          track_object_and_camera: true
          tracking_degrees: TRACKING_DEGREE_OBJECT_ROTATION_SCALE
          inlier_spring_force: 0.0
          static_motion_temporal_ratio: 3e-2
          object_similarity_min_contd_inliers: 10
        }
      }
      visualize_tracking_data: false
      streaming_track_data_cache_size: 100
    }
  }
}