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路米纳-4DGS:用于动态场景重建的照明-坚固的四维高斯斯裂纹
Xiaoqiang Wang1, Qing Wang1, Yang Sun1
1School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China.
Sensors (Basel, Switzerland)
|March 14, 2026
概括
Lumina-4DGS通过解光度变化和优先考虑几何准确性来增强动态场景重建. 这种新的框架减少了闪和浮动的文物,以实现现实的,一致的4D模拟.
科学领域:
- 计算机视觉 计算机视觉
- 计算机图形 计算机图形
- 三维重建的3D重建
背景情况:
- 动态场景的高保真4D重建对于沉浸式模拟至关重要,但由于多视图传感器阵列中的光度不一致性而受到挑战.
- 标准的3D高斯分片 (3DGS) 与自动曝光 (AE),自动白平衡 (AWB) 和ISP处理存在问题,导致像闪和浮动文物这样的几何错误.
研究的目的:
- 开发一个强大的框架,Lumina-4DGS,它将时空几何模型与层次性曝光补偿协调,用于准确的4D场景重建.
- 通过明确地解和纠正光度变化,同时保持几何完整性来解决现有方法的局限性.
主要方法:
- 实施了对AE/AWB波动的全球曝光相关模块和非线性多尺度双边网格的等级性曝光补偿策略.
- 引入了SSIM-Gated优化,以动态的门梯度流,优先考虑几何准确性,而不是光度过拟合,通过确保仅在结构可靠的几何上进行增强.
主要成果:
- 在Waymo开放数据集上实现了最先进的全图像PSNR31.12dB,几何误差最小 (RMSE深度1.89m,Chamfer距离0.215m).
- 在具有严重照明转移的具有挑战性的自收集数据集上,与基线相比,证明了2.13dB的PSNR改进,优于最近的驾驶场景方法.
结论:
- 卢米纳-4DGS为动态场景提供了摄影现实性,曝光不变的新型视图合成.
- 该框架在异质相机输入中保持了卓越的几何一致性,有效地减轻了由光度变化引起的工件.
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