Edge-Enhanced Dilated Residual Attention Network for Multimodal Medical Image Fusion

• URL: http://arxiv.org/abs/2411.11799v1
• Date: Mon, 18 Nov 2024 18:11:53 GMT
• Title: Edge-Enhanced Dilated Residual Attention Network for Multimodal Medical Image Fusion
• Authors: Meng Zhou, Yuxuan Zhang, Xiaolan Xu, Jiayi Wang, Farzad Khalvati,
• Abstract summary: Multimodal medical image fusion is a crucial task that combines complementary information from different imaging modalities into a unified representation. While deep learning methods have significantly advanced fusion performance, some of the existing CNN-based methods fall short in capturing fine-grained multiscale and edge features. We propose a novel CNN-based architecture that addresses these limitations by introducing a Dilated Residual Attention Network Module for effective multiscale feature extraction.
• Score: 13.029564509505676
• License:
• Abstract: Multimodal medical image fusion is a crucial task that combines complementary information from different imaging modalities into a unified representation, thereby enhancing diagnostic accuracy and treatment planning. While deep learning methods, particularly Convolutional Neural Networks (CNNs) and Transformers, have significantly advanced fusion performance, some of the existing CNN-based methods fall short in capturing fine-grained multiscale and edge features, leading to suboptimal feature integration. Transformer-based models, on the other hand, are computationally intensive in both the training and fusion stages, making them impractical for real-time clinical use. Moreover, the clinical application of fused images remains unexplored. In this paper, we propose a novel CNN-based architecture that addresses these limitations by introducing a Dilated Residual Attention Network Module for effective multiscale feature extraction, coupled with a gradient operator to enhance edge detail learning. To ensure fast and efficient fusion, we present a parameter-free fusion strategy based on the weighted nuclear norm of softmax, which requires no additional computations during training or inference. Extensive experiments, including a downstream brain tumor classification task, demonstrate that our approach outperforms various baseline methods in terms of visual quality, texture preservation, and fusion speed, making it a possible practical solution for real-world clinical applications. The code will be released at https://github.com/simonZhou86/en_dran.

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