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This paper addresses critical data quality issues in the Manga109 dataset by revising nearly 30,000 annotations using OCR detection and manual correction to better support modern multimodal AI systems. By resolving inaccuracies such as overlapping dialogue and missing text regions, this work directly enhances the reliability of training sets for manga understanding tasks like translation and scene recognition.
Source coveringarXiv

Manga109-v2026: Revisiting Manga109 Annotations for Modern Manga Understanding

arXiv2 min read

arXiv:2605.21182v2 Announce Type: replace-cross Abstract: Manga is a culturally distinctive multimodal medium and one of the most influential forms of Japanese popular culture. As AI systems increasingly target manga understanding, OCR, and translation, Manga109 has become a foundational dataset for manga-related AI research. However, the current Manga109 dataset contains inaccurate transcriptions and coarse annotations, which do not align well with modern OCR and multimodal manga understanding tasks. In this work, we revisit the dialogue text annotations of Manga109 and identify five categories of annotation issues, including inaccurate transcriptions, missing text regions, overlapping dialogue and onomatopoeia, and under-segmented speech balloons. To address these issues, we combine OCR-based issue detection and manual revision to construct Manga109-v2026, revising approximately 29,000 dialogue annotations. Our revisions better align Manga109 with modern OCR and multimodal manga understanding systems while preserving expressive structures characteristic of manga.

Abstract:Manga is a culturally distinctive multimodal medium and one of the most influential forms of Japanese popular culture. As AI systems increasingly target manga understanding, OCR, and translation, Manga109 has become a foundational dataset for manga-related AI research. However, the current Manga109 dataset contains inaccurate transcriptions and coarse annotations, which do not align well with modern OCR and multimodal manga understanding tasks. In this work, we revisit the dialogue text annotations of Manga109 and identify five categories of annotation issues, including inaccurate transcriptions, missing text regions, overlapping dialogue and onomatopoeia, and under-segmented speech balloons. To address these issues, we combine OCR-based issue detection and manual revision to construct Manga109-v2026, revising approximately 29,000 dialogue annotations. Our revisions better align Manga109 with modern OCR and multimodal manga understanding systems while preserving expressive structures characteristic of manga.

Accepted to the Culture x AI Workshop at ICML 2026. Project page: this https URL

Computation and Language (cs.CL); Artificial Intelligence (cs.AI); Computer Vision and Pattern Recognition (cs.CV)

arXiv:2605.21182 [cs.CL]

(or arXiv:2605.21182v2 [cs.CL] for this version)

https://doi.org/10.48550/arXiv.2605.21182 Focus to learn more arXiv-issued DOI via DataCite

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Full text under the publisher's open licence · 251 words