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MouSi: Poly-Visual-Expert Vision-Language Models

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arxiv 2401.17221 v1 pith:X2XOGJTR submitted 2024-01-30 cs.CV cs.AIcs.CLcs.LG

classification cs.CVcs.AIcs.CLcs.LG
keywords visualexpertsencodersimagemodelsperformancepositionaltechnique
verification ladder T0 review T1 audit T2 compute T3 formal
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Current large vision-language models (VLMs) often encounter challenges such as insufficient capabilities of a single visual component and excessively long visual tokens. These issues can limit the model's effectiveness in accurately interpreting complex visual information and over-lengthy contextual information. Addressing these challenges is crucial for enhancing the performance and applicability of VLMs. This paper proposes the use of ensemble experts technique to synergizes the capabilities of individual visual encoders, including those skilled in image-text matching, OCR, image segmentation, etc. This technique introduces a fusion network to unify the processing of outputs from different visual experts, while bridging the gap between image encoders and pre-trained LLMs. In addition, we explore different positional encoding schemes to alleviate the waste of positional encoding caused by lengthy image feature sequences, effectively addressing the issue of position overflow and length limitations. For instance, in our implementation, this technique significantly reduces the positional occupancy in models like SAM, from a substantial 4096 to a more efficient and manageable 64 or even down to 1. Experimental results demonstrate that VLMs with multiple experts exhibit consistently superior performance over isolated visual encoders and mark a significant performance boost as more experts are integrated. We have open-sourced the training code used in this report. All of these resources can be found on our project website.

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Forward citations

Cited by 6 Pith papers

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

  1. BVS: Bayesian Visual Search with Multimodal Large Language Model for Fine-grained Perception

    cs.CV 2026-07 conditional novelty 6.0 of 10

    BVS combines early-stop attention rollout priors with a scale-aware non-stationary kernel and GP-UCB to locate tiny objects in UHR images more accurately and with fewer MLLM queries than prior visual-search methods.

  2. METEOR: Multi-Encoder Collaborative Token Pruning for Efficient Vision Language Models

    cs.CV 2025-07 conditional novelty 6.0 of 10

    METEOR is a three-stage token pruning framework that reduces visual tokens in multi-encoder MLLMs by 76% with only a 0.3% average accuracy drop.

  3. Hidden in plain sight: VLMs overlook their visual representations

    cs.CV 2025-06 conditional novelty 6.0 of 10

    VLMs perform far worse than their own visual encoders on vision-centric tasks because the language model fails to use accessible visual information and instead follows its language priors.

  4. Florence-VL: Enhancing Vision-Language Models with Generative Vision Encoder and Depth-Breadth Fusion

    cs.CV 2024-12 conditional novelty 6.0 of 10

    Using Florence-2's multi-depth, multi-prompt visual features in an MLLM yields consistent benchmark gains over CLIP-based counterparts, especially on text-heavy tasks.

  5. EchoVLM: Dynamic Mixture-of-Experts Vision-Language Model for Universal Ultrasound Intelligence

    cs.CV 2025-09 unverdicted novelty 5.0 of 10

    EchoVLM applies a Mixture-of-Experts vision-language model to ultrasound imaging across seven body regions, reporting gains of 10.15 BLEU-1 and 4.77 ROUGE-1 over Qwen2-VL on report generation.

  6. From Holistic to Localized: Local Enhanced Adapters for Efficient Visual Instruction Fine-Tuning

    cs.CV 2024-11 conditional novelty 5.0 of 10

    Dual-LoRA plus Visual Cue Enhancement improves efficient visual instruction tuning over LoRA and LoRA-MoE baselines with near-vanilla-LoRA inference time.

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