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arXiv 2606.17998cs.CV

AIGS-Net: 基于2D高斯泼溅的紧凑光照场建模用于快速低光图像增强

AIGS-Net: Compact Illumination Field Modeling via 2D Gaussian Splatting for Fast Low-Light Image Enhancement

College of Mechanical and Vehicle Engineering, Chongqing University(重庆大学机械与车辆工程学院);Department of Electrical and Computer Engineering, Carnegie Mellon University(卡内基梅隆大学电气与计算机工程系);Herbert Wertheim College of Engineering, University of Florida(佛罗里达大学赫伯特·韦特海姆工程学院);School of Mathematics and Statistics, Qingdao University(青岛大学数学与统计学院);National Innovation Center of Intelligent and Connected Vehicles(国家智能网联汽车创新中心);School of Vehicle and Mobility, Tsinghua University(清华大学车辆与运载学院)

Yuhan Chen, Kunyang Huang, Fuchen Li, Zhuohan Qin, Guofa Li, Wenbo Chu, Keqiang Li

AI总结:

提出AIGS-Net,通过输入自适应的2D高斯泼溅光照场和零参数多尺度上下文编码,以约40个可学习参数实现低光图像增强,在LOL和LSRW基准上平衡了增强质量与推理效率。

摘要:

现有的低光图像增强方法通常在光照场建模的表征能力与计算复杂度之间存在瓶颈。为解决此问题,本文提出自适应光照高斯泼溅网络(AIGS-Net),一种用于快速低光增强的超轻量级架构。与传统的静态先验不同,AIGS-Net构建了一个输入自适应的2D高斯泼溅光照场。高斯基函数的不透明度由输入图像的相对亮度统计动态调制,并通过有序alpha合成渲染空间变化的光照补偿。为了高效指导自适应光照补偿,引入了一个零参数非线性多尺度上下文编码模块,无需额外卷积权重即可提取低频结构和局部对比度线索。为抑制噪声放大和传感器引起的颜色偏差,AIGS-Net集成了噪声掩膜估计、锁定单通道伽马映射、跨通道一致性正则化和目标颜色对齐约束。在LOL和LSRW基准上的实验表明,AIGS-Net在仅需约40个可学习参数的情况下,改善了细节恢复和颜色保真度,实现了增强质量与极端推理效率之间的有效权衡。

英文摘要:

Existing low-light image enhancement methods often face a bottleneck between the representation capacity of illumination-field modeling and computational complexity. To address this issue, this paper proposes an Adaptive Illumination Gaussian Splatting Network (AIGS-Net), an ultra-lightweight architecture for fast low-light enhancement. Unlike conventional static priors, AIGS-Net constructs an input-adaptive 2D Gaussian Splatting illumination field. The opacity of Gaussian basis functions is dynamically modulated by relative luminance statistics of the input image, and spatially varying illumination compensation is rendered through ordered alpha compositing. To guide adaptive illumination compensation efficiently, a zero-parameter nonlinear multiscale contextual encoding module is introduced to extract low-frequency structures and local contrast cues without additional convolutional weights. To suppress noise amplification and sensor-induced color bias, AIGS-Net integrates noise-mask estimation, locked single-channel Gamma mapping, cross-channel consistency regularization, and target color-alignment constraints. Experiments on LOL and LSRW benchmarks show that AIGS-Net improves detail recovery and color fidelity while requiring only approximately 40 learnable parameters, achieving an effective trade-off between enhancement quality and extreme inference efficiency.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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