{
  "compare_url": "http://192.168.200.184/newpec/navsea-compare-karatsu-20nm.html",
  "compare_version": "20nm-r7-20260331-2044",
  "backend_audit_json": "/root/sourceserver/pbf/NavSea_Original_vs_Delivery_Render_Audit_Karatsu_20nm_2026-03-31.r7.json",
  "visual_metrics": {
    "image_width": 800,
    "image_height": 580,
    "total_pixels": 464000,
    "changed_pixels": 411961,
    "changed_ratio": 0.887847,
    "mean_abs_rgb": [
      30.3034,
      31.6079,
      61.2516
    ],
    "rms_rgb": [
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      45.5806,
      75.4396
    ],
    "diff_bbox": [
      0,
      0,
      800,
      580
    ],
    "full_crop_left": [
      0,
      150,
      800,
      730
    ],
    "full_crop_right": [
      800,
      150,
      1600,
      730
    ]
  },
  "backend_summary": {
    "original_feature_instances": 258317,
    "engineering_feature_instances": 258317,
    "result_count": 516634,
    "status_counts": {
      "extra_in_engineering": 258317,
      "missing_in_engineering": 258317
    },
    "top_annotation_issues": [
      {
        "issue": "extra_text_in_engineering",
        "source_layer": "bathymetry_line",
        "count": 24168
      },
      {
        "issue": "text_missing_in_engineering",
        "source_layer": "L海底地形",
        "count": 24168
      },
      {
        "issue": "extra_text_in_engineering",
        "source_layer": "depth_contour",
        "count": 11929
      },
      {
        "issue": "text_missing_in_engineering",
        "source_layer": "L等深線",
        "count": 11929
      },
      {
        "issue": "extra_text_in_engineering",
        "source_layer": "seabed_text_point",
        "count": 4499
      },
      {
        "issue": "text_missing_in_engineering",
        "source_layer": "p底質",
        "count": 4499
      },
      {
        "issue": "extra_text_in_engineering",
        "source_layer": "navigation_marks",
        "count": 1516
      },
      {
        "issue": "text_missing_in_engineering",
        "source_layer": "p航路標識群",
        "count": 1516
      },
      {
        "issue": "text_missing_in_engineering",
        "source_layer": "p地名",
        "count": 1444
      },
      {
        "issue": "extra_text_in_engineering",
        "source_layer": "place_label_sea",
        "count": 1444
      }
    ],
    "top_style_semantic_issues": [
      {
        "issue": "depth_numeric_missing",
        "source_layer": "L海底地形",
        "count": 24168
      },
      {
        "issue": "depth_numeric_missing",
        "source_layer": "L等深線",
        "count": 11929
      },
      {
        "issue": "safety_icon_missing",
        "source_layer": "p航路標識群",
        "count": 1885
      },
      {
        "issue": "depth_numeric_missing",
        "source_layer": "L概略等深線",
        "count": 350
      },
      {
        "issue": "clearance_numeric_missing",
        "source_layer": "p高さ制限",
        "count": 33
      }
    ],
    "top_source_layer_issues": [
      {
        "status": "extra_in_engineering",
        "source_layer": "baseline_outline",
        "count": 87709
      },
      {
        "status": "missing_in_engineering",
        "source_layer": "P基本線ククリ",
        "count": 87709
      },
      {
        "status": "extra_in_engineering",
        "source_layer": "baseline_area",
        "count": 50421
      },
      {
        "status": "missing_in_engineering",
        "source_layer": "P基本線",
        "count": 50421
      },
      {
        "status": "extra_in_engineering",
        "source_layer": "depth_contour",
        "count": 36460
      },
      {
        "status": "missing_in_engineering",
        "source_layer": "L等深線",
        "count": 36460
      },
      {
        "status": "extra_in_engineering",
        "source_layer": "bathymetry_line",
        "count": 35940
      },
      {
        "status": "missing_in_engineering",
        "source_layer": "L海底地形",
        "count": 35940
      },
      {
        "status": "extra_in_engineering",
        "source_layer": "onshore_structure_line",
        "count": 10544
      },
      {
        "status": "missing_in_engineering",
        "source_layer": "L陸上構造物陸",
        "count": 10544
      }
    ]
  },
  "notes": [
    "Visual metrics are browser-rendered screenshot diff metrics from the fixed compare page.",
    "Backend metrics are current render-audit summary metrics and may remain blind to sprite-load failures."
  ]
}