Reconstructing neural radiance fields with explicit volumetric
representations, demonstrated by Plenoxels, has shown remarkable advantages on
training and rendering efficiency, while grid-based representations typically
induce considerable overhead for storage and transmission. In this work, we
present a simple and effective framework for pursuing compact radiance fields
from the perspective of compression methodology. By exploiting intrinsic
properties exhibiting in grid models, a non-uniform compression stem is
developed to significantly reduce model complexity and a novel parameterized
module, named Neural Codebook, is introduced for better encoding high-frequency
details specific to per-scene models via a fast optimization. Our approach can
achieve over 40 $\times$ reduction on grid model storage with competitive
rendering quality. In addition, the method can achieve real-time rendering
speed with 180 fps, realizing significant advantage on storage cost compared to
real-time rendering methods.

本文提出了一种使用压缩方法从紧凑的角度追求较小体积的神经辐射场的简单而有效的框架，该方法利用网格模型固有的代表特性，开发了非一致压缩方法以显着减少模型复杂性，并引入了名为 “神经码书” 的新颖参数化模块，通过快速优化来更好地编码每个场景模型的高频细节，从而实现对网格模型存储量的超过 40 倍的减少，在具有竞争性的渲染质量和 180 fps 的实时渲染速度的同时，相对于实时渲染方法而言具有存储成本的显著优势。