arXiv AI

Beyond Pixel Reconstruction: Retrieval-Guided Glyph-Aware Restoration for Low-Resource Manchu Historical Documents

The paper introduces a retrieval-guided glyph-aware restoration framework for low-resource Manchu historical documents. Unlike traditional pixel-level reconstruction methods, it incorporates glyph-level structural knowledge by retrieving relevant glyph exemplars to guide the restoration process. Experiments show that this approach improves both image quality and glyph fidelity compared to existing methods.

arXiv AI
4d ago

Think Before You Restore: Risk-Aware Manchu Manuscript Restoration with Stroke-Guided Attention

The paper introduces SAGE-Restore, a stroke-aware restoration framework for full-page blind restoration of historical Manchu manuscripts. It first predicts patch-level repair probabilities using appearance and stroke-structural cues, then refines these into pixel-level soft gates to selectively apply restoration candidates. The authors also propose a fidelity-aware evaluation protocol and report that SAGE-Restore achieves superior recovery and fidelity metrics compared to existing methods.

By Mingqiu Liang, Dongdong Wang, Siyang Lu, Ting Huang, Yingjun Qi
arXiv Computer Vision
Aug 28

Ancient-Bench: A Comprehensive Multi-millennial, Multi-medium, and Multi-script Benchmark for Ancient Chinese Artifact Text Recognition

Ancient-Bench is a new benchmark for recognizing text on ancient Chinese artifacts, comprising 2,700 images that span 3,000 years of character evolution, nine artifact categories, and seven historical script forms. It introduces three annotation standards—symbol, character, and parsing standardization—to accommodate medium‑specific characteristics and enable consistent evaluation. Experiments show that current Vision‑Language Models and OCR specialists still struggle with variant characters, specialized symbols, and hallucination, indicating the task remains largely unsolved.

By Hiuyi Cheng, Nuo Xu, Yuyi Zhang, Xuhan Zheng, Wei Pan, Jing Zhang, Dezhi Peng, Minghui Liao, Yihua Teng, Jihao Wu, Haoyu Ren, Lianwen Jin
arXiv Machine Learning
Sep 11

Combining Synthetic and Real Data for Low-Resource Historical OCR: A Manchu Case Study

The paper investigates how to combine synthetic and real historical images to improve OCR for the endangered Manchu language. Using 60,000 synthetic and 20,306 real word images, the authors evaluate three vision‑language models and a compact CRNN across synthetic‑only, real‑only, joint, and sequential training regimes. Adding real data boosts word accuracy to 95–96%, and ensembling the best recognizers raises it to 98.27% without further training.

By Yan Hon Michael Chung, Hanlin Wang
Hugging Face Trending Papers
Sep 10

Combining Synthetic and Real Data for Low-Resource Historical OCR: A Manchu Case Study

The paper investigates how to best combine synthetic and real historical Manchu word images for low‑resource OCR. Using 60,000 synthetic and 20,306 real images, the authors compare three pretrained vision‑language models and a compact CRNN across synthetic‑only, real‑only, joint, and sequential training regimes. Adding real data boosts word accuracy to 95–96%, and ensembling the best recognizers raises it to 98.27% without extra training.

arXiv AI
Aug 11

TongGuOCR: A Layout-Aware and Token-Augmented OCR Framework for Chinese Historical Documents

arXiv:2608. 07917v1 Announce Type: new Abstract: Chinese historical documents preserve valuable cultural heritage, but many collections remain accessible only as scanned page images, preventing full-text retrieval, collation, and computational analysis.

By Zhongheng Zhou, Yi Sun, Huiguo He, Yuyi Zhang, Peirong Zhang, Yulin Fang, Dezhi Peng, Minghui Liao, Lianwen Jin
arXiv Computer Vision
6d ago

A Multi-Stage Framework for Kuzushiji Character Recognition in Japanese Historical Documents

The paper presents a multi‑stage framework for recognizing Kuzushiji characters in Japanese historical documents. It combines character detection, cropping, classification, reading‑order reconstruction via adaptive column clustering, and large‑language‑model‑based post‑OCR correction. The authors also augment data synthetically, correct dataset annotations, and introduce new test sets, achieving significant character error rate reductions on real, synthetic, and out‑of‑domain data.

By Rui-Yang Ju, Kohei Yamashita, Hirotaka Kameko, Shinsuke Mori
arXiv AI
Jul 7

HCSU: A Dataset and Benchmark for Fine-Grained Historical Calligraphy Style Understanding

arXiv:2607. 04147v1 Announce Type: cross Abstract: Automated fine-grained perception of calligraphy styles--a task vital to cultural heritage preservation--remains a critical challenge for Large Vision-Language Models (LVLMs), largely constrained by existing datasets that suffer from modal mixture and flattened labels.

By Yinsheng Yao, Yan Liu, Chen Ye
arXiv AI
Aug 12

TongGuOCR: A Layout-Aware and Token-Augmented OCR MLLM for Chinese Historical Documents

arXiv:2608. 07917v2 Announce Type: replace Abstract: Chinese historical documents preserve valuable cultural heritage, but many collections remain accessible only as scanned page images, preventing full-text retrieval, collation, and computational analysis.

By Zhongheng Zhou, Yi Sun, Huiguo He, Yuyi Zhang, Peirong Zhang, Yulin Fang, Dezhi Peng, Minghui Liao, Lianwen Jin