{
  "schema": "silktrain-pilot-sample/v1",
  "synthetic": true,
  "locale": "ja",
  "workflow": "video-tracking",
  "service": "data-documents",
  "title": "動画アノテーション・物体追跡",
  "source_scenario": "遮蔽物の後ろに消えた物体が2フレーム後に再登場します。",
  "expected_delivery": "フレーム区間、追跡ID、可視性、時系列イベントのラベル。",
  "acceptance_check": "遮蔽や場面転換の前後を再生してIDの連続性を確認します。",
  "scoping_checklist": "代表サンプル、クラス定義、境界事例、単位や座標を定めた出力仕様をご用意ください。",
  "examples": [
    {
      "frame": 118,
      "time_ms": 4720,
      "track": 7,
      "visibility": "visible",
      "center_px": [
        50,
        31
      ]
    },
    {
      "frame": 119,
      "time_ms": 4760,
      "track": 7,
      "visibility": "occluded",
      "center_px": null
    },
    {
      "frame": 120,
      "time_ms": 4800,
      "track": 7,
      "visibility": "visible",
      "center_px": [
        55,
        32
      ]
    }
  ]
}