CDAN: Convolutional dense attention-guided network for low-light image enhancement

TL;DR

The paper presents CDAN, a novel convolutional dense attention-guided network that significantly improves low-light image enhancement by restoring textures, colors, and details, thereby aiding computer vision tasks in challenging lighting conditions.

Contribution

Introduces CDAN, a new deep learning architecture combining autoencoder, dense blocks, and attention mechanisms for superior low-light image enhancement.

Findings

Outperforms state-of-the-art methods on benchmark datasets.

Effectively restores textures and colors in low-light images.

Enhances performance of object detection in low-light conditions.

Abstract

Low-light images, characterized by inadequate illumination, pose challenges of diminished clarity, muted colors, and reduced details. Low-light image enhancement, an essential task in computer vision, aims to rectify these issues by improving brightness, contrast, and overall perceptual quality, thereby facilitating accurate analysis and interpretation. This paper introduces the Convolutional Dense Attention-guided Network (CDAN), a novel solution for enhancing low-light images. CDAN integrates an autoencoder-based architecture with convolutional and dense blocks, complemented by an attention mechanism and skip connections. This architecture ensures efficient information propagation and feature learning. Furthermore, a dedicated post-processing phase refines color balance and contrast. Our approach demonstrates notable progress compared to state-of-the-art results in low-light image enhancement, showcasing its robustness across a wide range of challenging scenarios. Our model performs remarkably on benchmark datasets, effectively mitigating under-exposure and proficiently restoring textures and colors in diverse low-light scenarios. This achievement underscores CDAN's potential for diverse computer vision tasks, notably enabling robust object detection and recognition in challenging low-light conditions.