This release is an open dataset made in line with [Danbooru 2018 set](https://nyaa.iss.one/view/1176129). It covers 1.227.622 thumbnail (512x512px images) from several imageboards combined with supporting metadata. **NOTE THIS IS AN OBSOLETE VERSION OF DATASET, modern version consists of [2021](https://nyaa.iss.one/view/1384820), [2015](https://nyaa.iss.one/view/1468367) and [2022](https://nyaa.iss.one/view/1547662) volumes** - much larger (2.7+M images) and better (sample size 1280/1024px w/o black boxes) - more tag metadata, better file naming, most valuable tags placed to EXIF - more computed metadata (incl. boundboxes) - suitable for mobile browsing ... **NEVERTHELESS, THIS RELEASE ALSO SUPPORTED. The main features here are:** - good original images technical and visual quality * width>=900 height>=900 MPixels>=1.2 * most of comixes, primitives, overtexted images manually excluded * no photo, almost no characterless scenes - several sources but unique image identification **%website% + %id%** * most of original images can be found in torrents (nyaa, rutracker) * selective regrab of originals possible if source website available - careful deduplication with relative website priorities, high to low (mostly) * safebooru.org * yande.re * e-shuushuu.net * konachan.com * gelbooru.com * chan.sankakucomplex.com * zerochan.net * anime-pictures.net * danbooru.donmai.us * tbib.org - image file names mostly structured and contains **%website% - %id% - %copyright% ~ %characters% (%artist%)** - not completely SFW (a little bit softcore ecchi here and there) Images timeline covers 10.2016 - 08.2019 densely, earlier period selectively, by "volumes": **V2019** - 11.2018-08.2019 taken from rip https://nyaa.iss.one/view/1202653 **V2018** - period 2017-2018 from rips https://nyaa.iss.one/view/1181364 https://www.acgnx.se/show-cceb3260269b5423cbd7f8d59f2c84531750923b.html https://nyaa.iss.one/view/771715 and https://nyaa.iss.one/view/513582 and (russian) https://rutracker.org/forum/viewtopic.php?t=5478026 **V2016** - till 10.2016 from https://nyaa.iss.one/view/891391 partially used https://nyaa.iss.one/view/750972 and https://nyaa.iss.one/view/875411 **V2016W** - till 05.2016 converted to wallpapes sizes https://nyaa.iss.one/view/710893, https://nyaa.iss.one/view/745633 and https://rutracker.org/forum/viewtopic.php?t=5198985 **V2018D** - remainder from https://nyaa.iss.one/view/1176129 survived after cleanup and deduplication, mostly 2015 and earlier files renamed according to metadata, white backgrounds for addon-2018 replaced with black ones #### Metadata: - copyrights, characters and artists taglist based on Danbooru tags * copyrights bundled into Franchises * characters refers to Franchises * copyrights and characters refer to Myanimelist entities - images statistical properties from JPG header and calculated * entropy (complexity), skewness (darkness) * colors count and intensity by channels * color saturation (grayness), edge intensity * boundbox coordinates and more - face detection results (Nagadomi) with 3 level of accuracy combined - complete Safebooru 407.424 posts copyright / characters / artist metadata * safebooru string tags with Danbooru tag-ids * Franchises wherever applicable #### Software: - Windows BAT scripts for processing with Image Magick - Python scripts for some grabbing and processing **This dataset may be used for massive localized image processing and [meta-]data mining,** e.g. - scene scale and composition classification, species recognition algorithms training / estimation - visual quality and attractiveness ranking / prediction - any imaginable metadata query with their visualized results on fingertips