Towards Visual Text Grounding of Multimodal Large Language Model
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918146803236864 |
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| author | Li, Ming Zhang, Ruiyi Chen, Jian Wang, Chenguang Gu, Jiuxiang Zhou, Yufan Dernoncourt, Franck Zhu, Wanrong Zhou, Tianyi Sun, Tong |
| author_facet | Li, Ming Zhang, Ruiyi Chen, Jian Wang, Chenguang Gu, Jiuxiang Zhou, Yufan Dernoncourt, Franck Zhu, Wanrong Zhou, Tianyi Sun, Tong |
| contents | Despite the existing evolution of Multimodal Large Language Models (MLLMs), a non-neglectable limitation remains in their struggle with visual text grounding, especially in text-rich images of documents. Document images, such as scanned forms and infographics, highlight critical challenges due to their complex layouts and textual content. However, current benchmarks do not fully address these challenges, as they mostly focus on visual grounding on natural images, rather than text-rich document images. Thus, to bridge this gap, we introduce TRIG, a novel task with a newly designed instruction dataset for benchmarking and improving the Text-Rich Image Grounding capabilities of MLLMs in document question-answering. Specifically, we propose an OCR-LLM-human interaction pipeline to create 800 manually annotated question-answer pairs as a benchmark and a large-scale training set of 90$ synthetic data based on four diverse datasets. A comprehensive evaluation of various MLLMs on our proposed benchmark exposes substantial limitations in their grounding capability on text-rich images. In addition, we propose two simple and effective TRIG methods based on general instruction tuning and plug-and-play efficient embedding, respectively. By finetuning MLLMs on our synthetic dataset, they promisingly improve spatial reasoning and grounding capabilities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_04974 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Towards Visual Text Grounding of Multimodal Large Language Model Li, Ming Zhang, Ruiyi Chen, Jian Wang, Chenguang Gu, Jiuxiang Zhou, Yufan Dernoncourt, Franck Zhu, Wanrong Zhou, Tianyi Sun, Tong Computer Vision and Pattern Recognition Artificial Intelligence Computation and Language Machine Learning Despite the existing evolution of Multimodal Large Language Models (MLLMs), a non-neglectable limitation remains in their struggle with visual text grounding, especially in text-rich images of documents. Document images, such as scanned forms and infographics, highlight critical challenges due to their complex layouts and textual content. However, current benchmarks do not fully address these challenges, as they mostly focus on visual grounding on natural images, rather than text-rich document images. Thus, to bridge this gap, we introduce TRIG, a novel task with a newly designed instruction dataset for benchmarking and improving the Text-Rich Image Grounding capabilities of MLLMs in document question-answering. Specifically, we propose an OCR-LLM-human interaction pipeline to create 800 manually annotated question-answer pairs as a benchmark and a large-scale training set of 90$ synthetic data based on four diverse datasets. A comprehensive evaluation of various MLLMs on our proposed benchmark exposes substantial limitations in their grounding capability on text-rich images. In addition, we propose two simple and effective TRIG methods based on general instruction tuning and plug-and-play efficient embedding, respectively. By finetuning MLLMs on our synthetic dataset, they promisingly improve spatial reasoning and grounding capabilities. |
| title | Towards Visual Text Grounding of Multimodal Large Language Model |
| topic | Computer Vision and Pattern Recognition Artificial Intelligence Computation and Language Machine Learning |
| url | https://arxiv.org/abs/2504.04974 |