arXiv:2502.07351cs.CVcs.AI2025-02

夜间雾霾图像增强,提升智能视觉系统识别准确率。

Multi-Knowledge-oriented Nighttime Haze Imaging Enhancer for Vision-driven Intelligent Systems

  • 融合白天去雾、低光增强与夜间去雾的多任务网络设计
  • 自注意力模块与多感受野结构提升夜间图像细节还原能力
  • 适合自动驾驶等实时智能成像场景部署

显著目标检测(SOD)在智能成像中至关重要,能有效识别和分割图像中的关键视觉元素。然而,白天雾霾、低光照及夜间雾霾等恶劣成像条件严重降低图像质量,影响真实场景下可靠的目标检测。为此,我们提出一种面向多知识的夜间雾霾图像增强器(MKoIE),整合白天去雾、低光增强与夜间去雾三项任务。该模型采用任务导向节点学习机制,针对三种退化类型分别建模,并引入嵌入式自注意力模块以增强夜间成像性能;同时设计多感受野增强模块,通过三个具有不同扩张率的并行深度可分离卷积分支,高效提取多尺度特征,在极低计算开销下捕捉全面空间信息,满足实时成像部署需求。为保障重建图像质量与视觉特性,提出混合损失函数。大量实验表明,MKoIE在多种气象/成像条件下均优于现有方法,显著提升智能成像系统的可靠性、准确性和运行效率。

原文摘要 · Abstract (English)

Salient object detection (SOD) plays a critical role in Intelligent Imaging, facilitating the detection and segmentation of key visual elements in an image. However, adverse imaging conditions such as haze during the day, low light, and haze at night severely degrade image quality and hinder reliable object detection in real-world scenarios. To address these challenges, we propose a multi-knowledge-oriented nighttime haze imaging enhancer (MKoIE), which integrates three tasks: daytime dehazing, low-light enhancement, and nighttime dehazing. The MKoIE incorporates two key innovative components: First, the network employs a task-oriented node learning mechanism to handle three specific degradation types: day-time haze, low light, and night-time haze conditions, with an embedded self-attention module enhancing its performance in nighttime imaging. In addition, multi-receptive field enhancement module that efficiently extracts multi-scale features through three parallel depthwise separable convolution branches with different dilation rates, capturing comprehensive spatial information with minimal computational overhead to meet the requirements of real-time imaging deployment. To ensure optimal image reconstruction quality and visual characteristics, we suggest a hybrid loss function. Extensive experiments on different types of weather/imaging conditions illustrate that MKoIE surpasses existing methods, enhancing the reliability, accuracy, and operational efficiency of intelligent imaging.

图像增强夜间成像多任务学习智能视觉

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