Multi-Text Guidance Is Important: Multi-Modality Image Fusion via Large Generative Vision-Language Model

Multi-modality image fusion aims to extract complementary features from multiple source images of different modalities, generating a fused image that inherits their advantages. To address challenges in cross-modality shared feature (CMSF) extraction, single-modality specific feature (SMSF) fusion, and the absence of ground truth (GT) images, we propose MTG-Fusion, a multi-text guided model. We leverage the capabilities of large vision-language models to generate text descriptions tailored to the input images, providing novel insights for these challenges. Our model introduces a text-guided CMSF extractor (TGCE) and a text-guided SMSF fusion module (TGSF). TGCE transforms visual features into the text domain using manifold-isometric domain transform techniques and provides effective visual-text interaction based on text-vision and text-text distances. TGSF fuses each dimension of visual features with corresponding text features, creating a weight matrix utilized for SMSF fusion. We also incorporate the constructed textual GT into the loss function for collaborative training. Extensive experiments demonstrate that MTG-Fusion achieves state-of-the-art performance on infrared and visible image fusion and medical image fusion tasks. The code is available at: https://github.com/zhaolb4080/MTG-Fusion.