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FreGS: 3D Gaussian Splatting with Progressive Frequency Regularization

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arxiv 2403.06908 v2 pith:5ACKGHHE submitted 2024-03-11 cs.CV

FreGS: 3D Gaussian Splatting with Progressive Frequency Regularization

Jiahui Zhang , Fangneng Zhan , Muyu Xu , Shijian Lu , Eric Xing This is my paper
classification cs.CV
keywords gaussianfrequencyfregsdensificationover-reconstructionsplattingachievesimage
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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3D Gaussian splatting has achieved very impressive performance in real-time novel view synthesis. However, it often suffers from over-reconstruction during Gaussian densification where high-variance image regions are covered by a few large Gaussians only, leading to blur and artifacts in the rendered images. We design a progressive frequency regularization (FreGS) technique to tackle the over-reconstruction issue within the frequency space. Specifically, FreGS performs coarse-to-fine Gaussian densification by exploiting low-to-high frequency components that can be easily extracted with low-pass and high-pass filters in the Fourier space. By minimizing the discrepancy between the frequency spectrum of the rendered image and the corresponding ground truth, it achieves high-quality Gaussian densification and alleviates the over-reconstruction of Gaussian splatting effectively. Experiments over multiple widely adopted benchmarks (e.g., Mip-NeRF360, Tanks-and-Temples and Deep Blending) show that FreGS achieves superior novel view synthesis and outperforms the state-of-the-art consistently.

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Cited by 4 Pith papers

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