CompEvent: Complex-valued Event-RGB Fusion for Low-light Video Enhancement and Deblurring

TL;DR

CompEvent introduces a complex-valued neural network framework that holistically fuses event data and RGB frames to improve low-light video deblurring and enhancement, outperforming existing methods.

Contribution

The paper presents a novel complex neural network architecture with temporal alignment and space-frequency modules for full-process fusion of event and RGB data.

Findings

Outperforms state-of-the-art methods in low-light video deblurring

Achieves superior fusion of event and RGB modalities

Enhances low-light video restoration quality

Abstract

Low-light video deblurring poses significant challenges in applications like nighttime surveillance and autonomous driving due to dim lighting and long exposures. While event cameras offer potential solutions with superior low-light sensitivity and high temporal resolution, existing fusion methods typically employ staged strategies, limiting their effectiveness against combined low-light and motion blur degradations. To overcome this, we propose CompEvent, a complex neural network framework enabling holistic full-process fusion of event data and RGB frames for enhanced joint restoration. CompEvent features two core components: 1) Complex Temporal Alignment GRU, which utilizes complex-valued convolutions and processes video and event streams iteratively via GRU to achieve temporal alignment and continuous fusion; and 2) Complex Space-Frequency Learning module, which performs unified complex-valued signal processing in both spatial and frequency domains, facilitating deep fusion through spatial structures and system-level characteristics. By leveraging the holistic representation capability of complex-valued neural networks, CompEvent achieves full-process spatiotemporal fusion, maximizes complementary learning between modalities, and significantly strengthens low-light video deblurring capability. Extensive experiments demonstrate that CompEvent outperforms SOTA methods in addressing this challenging task.