character_similarity

This is a dataset used for training models to determine whether two anime images (containing only one person) depict the same character. The dataset includes the following versions:

Version	Filename	Characters	Images	Information
v0	images_v0.tar.xz	2059	162116	Crawled from zerochan.net, includes images of Arknights, Fate/Grand Order, Genshin Impact, Girls' Frontline, and Azur Lane, as well as over 1500 other game or anime characters. The images are all small preview thumbnails.
v0_tiny	images_tiny_v0.tar.xz	514	10036	The dataset v0 has been simplified by randomly selecting 1/4 of the anime characters and 1/4 of the images for each character. It is recommended to use this dataset for model training and validation.
v0_xtiny	images_xtiny_v0.tar.xz	100	1814	v0_xtiny dataset is a further simplified version of v0_tiny, with only 100 characters retained. This dataset is only suitable for model validation and experimentation, and is not recommended for formal training.
v1	images_v1.tar.xz	4001	292800	The v1 dataset is similar to v0, crawled from zerochan, but it contains a richer selection of characters and more diverse images of the same character. Each character includes no less than 3 and no more than 200 images.
v1_pruned	images_pruned_v1.tar.xz	3982	241483	Pruned from v1 dataset, deleted monochrome and non-solo pictures, and also removed pictures where the character accounted for less than 40% of the entire vision area.
v2	images_v2.tar.gz	37886	836217	Images containing only the faces of all characters from zerochan.net have been scraped, and the image size is larger than that of the v1 and v0 datasets. However, please note that the v2 dataset may include multi-level nested image paths, such as a/b/c/xx.jpg and a/b/yy.jpg. In such cases, xx.jpg and yy.jpg should not be considered the same character. Two characters from different images are considered the same character only if they are located in exactly the same path.