{
  "schema_version": 2,
  "name": "manga109-segmentation",
  "version": "2.0.0",
  "created_at": "2026-07-24T15:28:53Z",
  "annotation_only": true,
  "contains_manga109_images": false,
  "sources": {
    "previous_release": {
      "repo": "mayocream/manga109-segmentation",
      "version": "1.1.0",
      "revision": "23f4a56758fd5f8a48a3b1ff84338e290e77174e"
    },
    "zenodo_text_masks": {
      "title": "Mask Dataset for: Unconstrained Text Detection in Manga: a New Dataset and Baseline",
      "doi": "10.5281/zenodo.4511796",
      "version": "1.0",
      "license": "CC-BY-4.0",
      "pages_used": 449
    },
    "textseg": {
      "repo": "mayocream/koharu-text-sam-ts-l",
      "revision": "5dd97423e0fbf2404264979136d47e8101144046",
      "weights_sha256": "bcd9525291677f467f0603509a0ca3df35711b4e3417cefce8da6bfc97164f45",
      "pages_used": 10153
    },
    "pp_doclayoutv3": {
      "repo": "PaddlePaddle/PP-DocLayoutV3_safetensors",
      "revision": "f6f3f2b438702c53e94cfd535c2ea05aafb7985f",
      "role": "train-only bbox proposals; never a mask source"
    },
    "images": "Manga109 images are referenced by relative path and are not included"
  },
  "policy": {
    "human_geometry": "authoritative text boxes and COO polygons",
    "good_existing_masks": "union with clipped TextSeg ink",
    "geometry_fallbacks": "replace with clipped TextSeg ink when supported",
    "zenodo": "replace with clipped manually painted ink when supported",
    "pp_doclayoutv3": "bbox proposal only; mask is TextSeg ink clipped to the proposal; output bbox is tight mask geometry",
    "pp_positive_score": 0.7,
    "pp_max_gold_box_coverage": 0.05,
    "page_filter": {
      "empty_target_teacher_pixels": 512,
      "low_coverage_teacher_pixels": 10000,
      "low_coverage_recall": 0.2,
      "purpose": "remove incomplete pages that would become false-negative COCO background"
    },
    "negative_supervision": "standard COCO implicit background only; no synthetic negative mask class",
    "rfdetr_compatibility": "all annotations have iscrowd=0; no custom dense head or ignore-region encoding"
  },
  "totals": {
    "candidate_images": 10602,
    "images": 10098,
    "excluded_images": 504,
    "excluded_000_covers": 102,
    "annotations": 454606,
    "relations": 355817,
    "category_counts": {
      "1": 162311,
      "2": 58948,
      "3": 129707,
      "4": 103640
    },
    "quality_counts": {
      "gold_mangaseg": 233347,
      "gold_zenodo_refined": 8335,
      "silver_pp_bbox_textseg_mask": 3372,
      "silver_textseg_refined": 209552
    },
    "retained_empty_typography_pages": 7
  },
  "splits": {
    "train": {
      "books": 87,
      "candidate_images": 8475,
      "images": 8128,
      "excluded_images": 347,
      "annotations": 358499,
      "relations": 280456,
      "category_counts": {
        "1": 129608,
        "2": 45165,
        "3": 102088,
        "4": 81638
      },
      "quality_counts": {
        "gold_mangaseg": 183726,
        "gold_zenodo_refined": 6662,
        "silver_pp_bbox_textseg_mask": 3372,
        "silver_textseg_refined": 164739
      },
      "review": {
        "records": 8475,
        "excluded": 347,
        "excluded_000_covers": 81,
        "retained_empty_typography_pages": 5,
        "review_flags": 83
      }
    },
    "validation": {
      "books": 11,
      "candidate_images": 1057,
      "images": 1001,
      "excluded_images": 56,
      "annotations": 48213,
      "relations": 37502,
      "category_counts": {
        "1": 15877,
        "2": 7395,
        "3": 13784,
        "4": 11157
      },
      "quality_counts": {
        "gold_mangaseg": 24941,
        "gold_zenodo_refined": 884,
        "silver_textseg_refined": 22388
      },
      "review": {
        "records": 1057,
        "excluded": 56,
        "excluded_000_covers": 10,
        "retained_empty_typography_pages": 2,
        "review_flags": 6
      }
    },
    "test": {
      "books": 11,
      "candidate_images": 1070,
      "images": 969,
      "excluded_images": 101,
      "annotations": 47894,
      "relations": 37859,
      "category_counts": {
        "1": 16826,
        "2": 6388,
        "3": 13835,
        "4": 10845
      },
      "quality_counts": {
        "gold_mangaseg": 24680,
        "gold_zenodo_refined": 789,
        "silver_textseg_refined": 22425
      },
      "review": {
        "records": 1070,
        "excluded": 101,
        "excluded_000_covers": 11,
        "retained_empty_typography_pages": 0,
        "review_flags": 0
      }
    }
  }
}