LeeMirror013/booru-quality-80-union-db

Booru Quality 80 Union SQLite DB

This dataset contains SQLite metadata databases and reproducible scripts for a high-quality Danbooru/Gelbooru metadata union. It does not contain image files. The image locations are URL metadata only.

Main File

Use data/quality_80_union.db as the main entrypoint.

SELECT COUNT(*) FROM images;
SELECT md5, canonical_rating, quality_score, canonical_file_url
FROM images
WHERE quality_score >= 0.8
ORDER BY quality_score DESC
LIMIT 20;

Contents

Path	Purpose
data/quality_80_union.db	Main md5-deduplicated quality union DB
data/gelbooru.db	Normalized Gelbooru source metadata DB
data/danbooru2025_candidate.db	Danbooru source metadata DB with md5
data/danbooru.db	Older Danbooru DB retained for compatibility
scripts/convert_danbooru.py	Danbooru converter
scripts/convert_gelbooru.py	Gelbooru converter
scripts/build_quality_union_db.py	Union DB builder
scripts/maintenance/repair_quality_percentiles.py	Percentile repair/provenance script
docs/database.md	Detailed schema and usage notes
dataset_manifest.json	File sizes, checksums, and DB stats

quality_80_union.db Facts

Metric	Value
Rows in images	2,988,704
Columns in images	35
quality_score >= 0.8	2,973,255
quality_score < 0.8	15,449
Selected by Gelbooru 80	2,034,916
Selected by Danbooru 80	1,850,329
Selected by both	896,541
Selected by neither	0

images is the md5-deduplicated union of the Gelbooru 80th-threshold selection and the Danbooru 80th-threshold selection.

Quality Score

quality_score uses rating_bucket_cume_dist_v1:

pct(score, rating) = count(score <= current_score within rating) / count(rating)
quality_score = max(gelbooru_score_pct, danbooru_score_pct)

The score range is 0..1. image_parquet_file is reserved for future local image parquet shard filenames and is nullable in the current DB.

URL Fields

canonical_file_url is the unified original-file URL. Source-specific URLs are also kept in gelbooru_file_url and danbooru_file_url.

Upstream Sources

• trojblue/danbooru2025-metadata
• AngelBottomless/Booru-Parquets (gelbooru.parquet)

Safety and Usage Notes

This is metadata for booru content and may include explicit/questionable rating rows. Users are responsible for filtering ratings and complying with source-site terms and local rules. This upload does not grant rights to download or reuse third-party images.