# FD2-Net: Frequency-Driven Feature Decomposition Network for Infrared-Visible Object Detection

arXiv: https://arxiv.org/abs/2412.09258 · HTML: https://mlsanity.com/paper/2412.09258/

## Key facts

- Cited by 10 papers in the map (data through 14 Oct 2026).
- Builds on 0 of its 43 references that are in the map.
- First posted on arXiv 12 Dec 2024.

## Built on by (most cited first, 10 of 10)

- [CSPENet: Contour-Aware and Saliency Priors Embedding Network for Infrared Small Target Detection](https://mlsanity.com/paper/2505.09943/) (2025)
- [AlignFreeNet: Is Cross-Modal Pre-Alignment Necessary? An End-to-End Alignment-Free Lightweight Network for Visible-Infrared Object Detection](https://mlsanity.com/paper/2507.20146/) (2025)
- [WD-FQDet: Multispectral Detection Transformer via Wavelet Decomposition and Frequency-aware Query Learning](https://mlsanity.com/paper/2605.13621/) (2026)
- [Prototype-Based Information Compensation Network for Multi-Source Remote Sensing Data Classification](https://mlsanity.com/paper/2505.04003/) (2025)
- [Disentangle Object and Non-object Infrared Features via Language Guidance](https://mlsanity.com/paper/2601.09228/) (2026)
- [UAV-CB: A Complex-Background RGB-T Dataset and Local Frequency Bridge Network for UAV Detection](https://mlsanity.com/paper/2603.17492/) (2026)
- [Dual Sparse Aggregation Transformer for Multispectral Object Detection](https://mlsanity.com/paper/2606.31015/) (2026)
- [CFGPNet: Cross-Attention-Based Fused Gradient Programmed Network Framework for Multispectral Object Detection](https://mlsanity.com/paper/2608.06205/) (2026)
- [Residual Optimal Transport-Based Experts Collaboration Towards Modality-Aware Infrared-Visible Object Detection](https://mlsanity.com/paper/2609.03516/) (2026)
- [FoCal: Frequency-Oriented Cross-Modal Interaction and Spectral Calibration for Aerial Visible-Infrared Object Detection](https://mlsanity.com/paper/2609.29125/) (2026)

## Abstract (arXiv)

Infrared-visible object detection (IVOD) seeks to harness the complementary information in infrared and visible images, thereby enhancing the performance of detectors in complex environments. However, existing methods often neglect the frequency characteristics of complementary information, such as the abundant high-frequency details in visible images and the valuable low-frequency thermal information in infrared images, thus constraining detection performance. To solve this problem, we introduce a novel Frequency-Driven Feature Decomposition Network for IVOD, called FD2-Net, which effectively captures the unique frequency representations of complementary information across multimodal visual spaces. Specifically, we propose a feature decomposition encoder, wherein the high-frequency unit (HFU) utilizes discrete cosine transform to capture representative high-frequency features, while the low-frequency unit (LFU) employs dynamic receptive fields to model the multi-scale context of diverse objects. Next, we adopt a parameter-free complementary strengths strategy to enhance multimodal features through seamless inter-frequency recoupling. Furthermore, we innovatively design a multimodal reconstruction mechanism that recovers image details lost during feature extraction, further leveraging the complementary information from infrared and visible images to enhance overall representational capacity. Extensive experiments demonstrate that FD2-Net outperforms state-of-the-art (SOTA) models across various IVOD benchmarks, i.e. LLVIP (96.2% mAP), FLIR (82.9% mAP), and M3FD (83.5% mAP).