HTMNet: A Hybrid Network with Transformer-Mamba Bottleneck Multimodal Fusion for Transparent and Reflective Objects Depth Completion

• URL: http://arxiv.org/abs/2505.20904v2
• Date: Wed, 28 May 2025 08:36:38 GMT
• Title: HTMNet: A Hybrid Network with Transformer-Mamba Bottleneck Multimodal Fusion for Transparent and Reflective Objects Depth Completion
• Authors: Guanghu Xie, Yonglong Zhang, Zhiduo Jiang, Yang Liu, Zongwu Xie, Baoshi Cao, Hong Liu,
• Abstract summary: Transparent and reflective objects pose significant challenges for depth sensors.<n>We propose HTMNet, a novel hybrid model integrating Transformer, CNN, and Mamba architectures.<n>We introduce a novel multimodal fusion module grounded in self-attention mechanisms and state space models.
• Score: 9.235004977824026
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Transparent and reflective objects pose significant challenges for depth sensors, resulting in incomplete depth information that adversely affects downstream robotic perception and manipulation tasks. To address this issue, we propose HTMNet, a novel hybrid model integrating Transformer, CNN, and Mamba architectures. The encoder is based on a dual-branch CNN-Transformer framework, the bottleneck fusion module adopts a Transformer-Mamba architecture, and the decoder is built upon a multi-scale fusion module. We introduce a novel multimodal fusion module grounded in self-attention mechanisms and state space models, marking the first application of the Mamba architecture in the field of transparent object depth completion and revealing its promising potential. Additionally, we design an innovative multi-scale fusion module for the decoder that combines channel attention, spatial attention, and multi-scale feature extraction techniques to effectively integrate multi-scale features through a down-fusion strategy. Extensive evaluations on multiple public datasets demonstrate that our model achieves state-of-the-art(SOTA) performance, validating the effectiveness of our approach.

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