Runqi Qiao, Qiuna Tan, Guanting Dong, MinhuiWu MinhuiWu, Chong Sun, Xiaoshuai Song, Jiapeng Wang, Zhuoma GongQue, Shanglin Lei, YiFan Zhang, Zhe Wei, Miaoxuan Zhang, Runfeng Qiao, Xiao Zong, Yida Xu, Peiqing Yang, Zhimin Bao, Muxi Diao, Chen Li, Honggang Zhang. Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers). 2025.

Recent advancements in Large Multimodal Models have demonstrated impressive performance in various tasks. However, their capabilities in error detection and resolution for Optical Character Recognition (OCR) remain underexplored. To address this gap, we construct the first visual instruction tuning dataset specifically for detailed OCR error analysis. Building on this foundation, we develop a universal, plug-and-play OCR-Critic model that incorporates three novel dynamic alignment strategies. These strategies systematically mitigate LMMs' weaknesses in OCR tasks by providing coarse-to-fine error feedback. To comprehensively evaluate these capabilities, we introduce OCR-ERROR, a benchmark designed to assess LMMs' ability to detect and categorize OCR errors, covering two task types, diverse error categories, and 2,400 rigorously validated samples. Experimental results show that OCR-Critic effectively identifies fine-grained OCR errors across multiple domains. With the integration of our dynamic alignment strategies, the LMM further achieves substantial performance gains on four prominent benchmarks, demonstrating both versatility and effectiveness.

Faces and humans are crucial elements in social interaction and are widely included in everyday photos and videos. Therefore, a deep understanding of faces and humans will enable multi-modal assistants to achieve improved response quality and broadened application scope. Currently, the multi-modal assistant community lacks a comprehensive and scientific evaluation of face and human understanding abilities. In this paper, we first propose a hierarchical ability taxonomy that includes three levels of abilities. Then, based on this taxonomy, we collect images and annotations from publicly available datasets in the face and human community and build a semi-automatic data pipeline to produce problems for the new benchmark. Finally, the obtained Face-Human-Bench includes a development set and a test set, each with 1800 problems, supporting both English and Chinese. We conduct evaluations over 25 mainstream multi-modal large language models (MLLMs) with our Face-Human-Bench, focusing on the correlation between abilities, the impact of the relative position of targets on performance, and the impact of Chain of Thought (CoT) prompting on performance. We also explore which abilities of MLLMs need to be supplemented by specialist models. The dataset and evaluation code have been made publicly available at https://face-human-bench.github.io.