EntropyGS: An Efficient Entropy Coding on 3D Gaussian Splatting
Contributions:
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A factorized design is proposed to entropy encode 3DGS based on a correlation analysis of Gaussian attributes, indicating a weak correlation, particularly between spherical harmonic AC components.
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A parameterized design is further proposed using common distributions to govern Gaussian attributes, including rotation, scaling, opacity, and spherical harmonic AC.
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An adaptive quantization finally completes the design of the entropy encoder, EntropyGS, for pre-generated 3DGS models with competitive rate-distortion performance.