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OmniCaptioner: One Captioner to Rule Them All

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arxiv 2504.07089 v3 pith:UOE2QQYW submitted 2025-04-09 cs.CV cs.CL

OmniCaptioner: One Captioner to Rule Them All

classification cs.CV cs.CL
keywords visualframeworkimagemodalitiesomnicaptionertextualcaptioningcaptions
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We propose OmniCaptioner, a versatile visual captioning framework for generating fine-grained textual descriptions across a wide variety of visual domains. Unlike prior methods limited to specific image types (e.g., natural images or geometric visuals), our framework provides a unified solution for captioning natural images, visual text (e.g., posters, UIs, textbooks), and structured visuals (e.g., documents, tables, charts). By converting low-level pixel information into semantically rich textual representations, our framework bridges the gap between visual and textual modalities. Our results highlight three key advantages: (i) Enhanced Visual Reasoning with LLMs, where long-context captions of visual modalities empower LLMs, particularly the DeepSeek-R1 series, to reason effectively in multimodal scenarios; (ii) Improved Image Generation, where detailed captions improve tasks like text-to-image generation and image transformation; and (iii) Efficient Supervised Fine-Tuning (SFT), which enables faster convergence with less data. We believe the versatility and adaptability of OmniCaptioner can offer a new perspective for bridging the gap between language and visual modalities.

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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.

  1. DetailVerifyBench: A Benchmark for Dense Hallucination Localization in Long Image Captions

    cs.CV 2026-04 unverdicted novelty 7.0

    DetailVerifyBench supplies 1,000 images and densely annotated long captions to evaluate precise hallucination localization in multimodal large language models.

  2. CodePercept: Code-Grounded Visual STEM Perception for MLLMs

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    Perception, not reasoning, is the main bottleneck for MLLM STEM visual reasoning, and training on executable reconstruction code measurably fixes it.

  3. Scene Graph Thinking: Reinforcing Structured Visual Reasoning for Multimodal Large Language Models

    cs.CV 2026-07 accept novelty 6.0

    Scene Graph Thinking (SaGe) converts images into hierarchical graphs, samples 120K node-articulated CoTs, and uses node-as-proxy GRPO rewards to improve MLLM fine-grained and relational visual reasoning.

  4. Scene Graph Thinking: Reinforcing Structured Visual Reasoning for Multimodal Large Language Models

    cs.CV 2026-07 accept novelty 6.0

    Scene-graph-aligned SFT plus node-as-proxy GRPO rewards let small MLLMs outperform larger baselines on fine-grained visual reasoning tasks.

  5. DiffCap-Bench: A Comprehensive, Challenging, Robust Benchmark for Image Difference Captioning

    cs.CV 2026-05 unverdicted novelty 6.0

    DiffCap-Bench supplies a diverse IDC benchmark with ten categories and LLM judging grounded in human difference lists to evaluate MLLMs more robustly than prior lexical metrics.

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