arXiv:2412.20064cs.CVcs.AI2024-12被引 3

提出一种低秩适配方法,高效融合RGB与事件相机数据进行识别。

VELoRA: A Low-Rank Adaptation Approach for Efficient RGB-Event based Recognition

  • 采用模态专用与共享的LoRA策略,分别适配RGB和事件流特征。
  • 通过帧差网络捕捉运动信息,提升多模态特征表达能力。
  • 适合需要轻量高效训练的多模态视觉任务研究者使用。

基于RGB和事件相机的模式识别可通过深度神经网络结合微调策略显著提升性能。受大模型成功的启发,引入预训练大模型可进一步增强多模态任务表现。然而,全量微调效率低下,轻量级微调方法如LoRA和Adapter被提出以平衡效率与性能。目前尚无针对预训练基础视觉模型的RGB-事件识别参数高效微调(PEFT)工作。为此,本文提出一种新型PEFT策略,用于适配预训练视觉基础模型以实现高效的RGB-事件分类。具体地,给定RGB帧与事件流,我们基于视觉基础模型ViT提取双模态特征,并采用模态特定的LoRA微调策略。同时,通过帧差主干网络捕捉双模态的运动线索。这些特征被拼接后输入高层Transformer层,通过模态共享的LoRA策略实现高效的多模态特征学习。最后,将融合特征送入分类头完成分类。源代码与预训练模型将公开于\url{https://github.com/Event-AHU/VELoRA}。

原文摘要 · Abstract (English)

Pattern recognition leveraging both RGB and Event cameras can significantly enhance performance by deploying deep neural networks that utilize a fine-tuning strategy. Inspired by the successful application of large models, the introduction of such large models can also be considered to further enhance the performance of multi-modal tasks. However, fully fine-tuning these models leads to inefficiency and lightweight fine-tuning methods such as LoRA and Adapter have been proposed to achieve a better balance between efficiency and performance. To our knowledge, there is currently no work that has conducted parameter-efficient fine-tuning (PEFT) for RGB-Event recognition based on pre-trained foundation models. To address this issue, this paper proposes a novel PEFT strategy to adapt the pre-trained foundation vision models for the RGB-Event-based classification. Specifically, given the RGB frames and event streams, we extract the RGB and event features based on the vision foundation model ViT with a modality-specific LoRA tuning strategy. The frame difference of the dual modalities is also considered to capture the motion cues via the frame difference backbone network. These features are concatenated and fed into high-level Transformer layers for efficient multi-modal feature learning via modality-shared LoRA tuning. Finally, we concatenate these features and feed them into a classification head to achieve efficient fine-tuning. The source code and pre-trained models will be released on \url{https://github.com/Event-AHU/VELoRA}.

多模态低秩微调事件相机视觉模型

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