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DRWKV: Focusing on Object Edges for Low-Light Image Enhancement

Created by
  • Haebom

Author

Xuecheng Bai, Yuxiang Wang, Boyu Hu, Qinyuan Jie, Chuanzhi Xu, Hongru Xiao, Kechen Li, Vera Chung

Outline

This paper proposes a novel model, Detailed Receptance Weighted Key Value (DRWKV), to address the problem of image enhancement in extremely low-light environments. DRWKV effectively separates illumination and edge structures by incorporating the proposed Global Edge Retinex (GER) theory, thereby enhancing edge fidelity. Furthermore, we introduce Evolving WKV Attention, a spiral scanning mechanism that captures spatial edge continuity and better models irregular structures. Furthermore, we design a Bilateral Spectrum Aligner (Bi-SAB) and a custom MS2-Loss algorithm to align luminance and color features to enhance visual smoothness and reduce artifacts. Extensive experiments on five Low-Light Image Enhancement (LLIE) benchmarks demonstrate that DRWKV achieves state-of-the-art performance in PSNR, SSIM, and NIQE while maintaining low computational complexity. Furthermore, we demonstrate improved downstream performance on low-light multi-object tracking tasks, demonstrating its generalization capability.

Takeaways, Limitations

Takeaways:
By incorporating GER theory, we significantly improve the accuracy of low-light image enhancement by enabling effective separation of illumination and edge structures.
Evolving WKV Attention effectively models spatial edge continuity and represents irregular structures well.
Bi-SAB and MS2-Loss improve visual naturalness and reduce artifacts.
It achieves the best performance in PSNR, SSIM, and NIQE metrics and also shows performance improvements in downstream tasks such as low-light multi-object tracking.
It maintains low computational complexity, making it suitable for real-time applications.
Limitations:
In this paper, only results for a specific benchmark dataset are presented, and generalization performance on other datasets or lighting conditions requires further study.
A detailed description of the specific design and parameter tuning process of GER theory and Evolving WKV Attention may be lacking.
Further validation of performance evaluation and robustness in real-world application environments is required.
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