MrNeRF (@janusch_patas)
2025-10-17 | โค๏ธ 71 | ๐ 4
GauUpdate: New Object Insertion in 3D Gaussian Fields with Consistent Global Illumination
Abstract (excerpt): In this paper, we propose a new method called GauUpdate that allows partially updating an old 3D Gaussian field with new objects from a new 3D Gaussian field.
However, simply inserting the new objects leads to inconsistent appearances because the old and new Gaussian fields may have different lighting environments. GauUpdate addresses this problem by applying inverse rendering techniques in the 3DGS to recover both the materials and environmental lights. Based on the materials and lighting, we relight the new objects in the old 3D Gaussian field for consistent global illumination.
For accurate estimation of the materials and lighting, we put additional constraints on the materials and lighting conditions: these two fields share the same materials but different environment lights, to improve their qualities.
We conduct experiments on both synthetic scenes and real-world scenes to evaluate GauUpdate, which demonstrate that GauUpdate achieves realistic object insertion in 3D Gaussian fields with consistent appearances.
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