Integrating Frequency-Domain Representations with Low-Rank Adaptation in Vision-Language Models

• URL: http://arxiv.org/abs/2503.06003v1
• Date: Sat, 08 Mar 2025 01:22:10 GMT
• Title: Integrating Frequency-Domain Representations with Low-Rank Adaptation in Vision-Language Models
• Authors: Md Azim Khan, Aryya Gangopadhyay, Jianwu Wang, Robert F. Erbacher,
• Abstract summary: This research presents a novel vision language model (VLM) framework to enhance feature extraction, scalability, and efficiency.<n>We evaluate the proposed model on caption generation and Visual Question Answering (VQA) tasks using benchmark datasets with varying levels of Gaussian noise.<n>Our model provides more detailed and contextually relevant responses, particularly for real-world images captured by a RealSense camera mounted on an Unmanned Ground Vehicle (UGV)
• Score: 0.6715525121432597
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Situational awareness applications rely heavily on real-time processing of visual and textual data to provide actionable insights. Vision language models (VLMs) have become essential tools for interpreting complex environments by connecting visual inputs with natural language descriptions. However, these models often face computational challenges, especially when required to perform efficiently in real environments. This research presents a novel vision language model (VLM) framework that leverages frequency domain transformations and low-rank adaptation (LoRA) to enhance feature extraction, scalability, and efficiency. Unlike traditional VLMs, which rely solely on spatial-domain representations, our approach incorporates Discrete Fourier Transform (DFT) based low-rank features while retaining pretrained spatial weights, enabling robust performance in noisy or low visibility scenarios. We evaluated the proposed model on caption generation and Visual Question Answering (VQA) tasks using benchmark datasets with varying levels of Gaussian noise. Quantitative results demonstrate that our model achieves evaluation metrics comparable to state-of-the-art VLMs, such as CLIP ViT-L/14 and SigLIP. Qualitative analysis further reveals that our model provides more detailed and contextually relevant responses, particularly for real-world images captured by a RealSense camera mounted on an Unmanned Ground Vehicle (UGV).

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