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DocPedia: Unleashing the Power of Large Multimodal Model in the Frequency Domain for Versatile Document Understanding

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arxiv 2311.11810 v4 pith:PEULKRWT submitted 2023-11-20 cs.CV cs.AI

classification cs.CVcs.AI
keywords docpediamodeldocumentlargevisualcomprehensiondomainfrequency
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

This work presents DocPedia, a novel large multimodal model (LMM) for versatile OCR-free document understanding, capable of parsing images up to 2,560$\times$2,560 resolution. Unlike existing work either struggle with high-resolution documents or give up the large language model thus vision or language ability constrained, our DocPedia directly processes visual input in the frequency domain rather than the pixel space. The unique characteristic enables DocPedia to capture a greater amount of visual and textual information using a limited number of visual tokens. To consistently enhance both perception and comprehension abilities of our model, we develop a dual-stage training strategy and enrich instructions/annotations of all training tasks covering multiple document types. Extensive quantitative and qualitative experiments conducted on various publicly available benchmarks confirm the mutual benefits of jointly learning perception and comprehension tasks. The results provide further evidence of the effectiveness and superior performance of our DocPedia over other methods.

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Forward citations

Cited by 7 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

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    Constraining visual token budgets during SFT and RL forces VLMs to learn functional active perception, yielding ~5% relative gains and strong transfer to unconstrained evaluation.

  2. MFH: Marrying Frequency Domain with Handwritten Mathematical Expression Recognition

    cs.CV 2025-07 conditional novelty 6.0 of 10

    MFH fuses high-frequency DCT features with spatial features from standard HMER encoders, improving recognition accuracy by about 1 to 2 points on CROHME 2014/2016/2019.

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    cs.CV 2025-02 reject novelty 6.0 of 10

    The paper presents the first event-camera dataset for scene text recognition and an LLM-based recognizer, but test-set tuning and contradictory data filtering weaken the evaluation.

  5. Docopilot: Improving Multimodal Models for Document-Level Understanding

    cs.CV 2025-07 conditional novelty 5.0 of 10

    A new academic-paper dataset and a retrieval-free fine-tuned InternVL2 model improve multi-page document QA accuracy and latency on several benchmarks.

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    An event-stream scene text recognizer trained with LLM-generated chain-of-thought rationales improves BLEU-1 on EventSTR from 0.638 to 0.648 and accuracy on WordArt* and IC15* by about half a point.

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