HyViLM: Enhancing Fine-Grained Recognition with a Hybrid Encoder for Vision-Language Models

• URL: http://arxiv.org/abs/2412.08378v2
• Date: Fri, 13 Dec 2024 09:49:53 GMT
• Title: HyViLM: Enhancing Fine-Grained Recognition with a Hybrid Encoder for Vision-Language Models
• Authors: Shiding Zhu, Wenhui Dong, Jun Song, Yingbo Wang, Yanan Guo, Bo Zheng,
• Abstract summary: HyViLM is designed to process images of any resolution while retaining the overall context during encoding. Compared with the state-of-the-art MLLMs under the same setting, our HyViLM outperforms existing MLLMs in nine out of ten tasks.
• Score: 15.128058747088222
• License:
• Abstract: Recently, there has been growing interest in the capability of multimodal large language models (MLLMs) to process high-resolution images. A common approach currently involves dynamically cropping the original high-resolution image into smaller sub-images, which are then fed into a vision encoder that was pre-trained on lower-resolution images. However, this cropping approach often truncates objects and connected areas in the original image, causing semantic breaks. To address this limitation, we introduce HyViLM, designed to process images of any resolution while retaining the overall context during encoding. Specifically, we: (i) Design a new visual encoder called Hybrid Encoder that not only encodes individual sub-images but also interacts with detailed global visual features, significantly improving the model's ability to encode high-resolution images. (ii) Propose an optimal feature fusion strategy for the dynamic cropping approach, effectively leveraging information from different layers of the vision encoder. Compared with the state-of-the-art MLLMs under the same setting, our HyViLM outperforms existing MLLMs in nine out of ten tasks. Specifically, HyViLM achieves a 9.6% improvement in performance on the TextVQA task and a 6.9% enhancement on the DocVQA task.

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