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Plenoxels: Radiance Fields without Neural Networks

[Project Page] [Paper] [Code]

Authors

  • Alex Yu
  • Sara Fridovich-Keil
  • Matthew Tancik
  • Qinhong Chen
  • Benjamin Recht
  • Angjoo Kanazawa

Table of contents


What’s Plenoxels?

Plenoxels

Plenoxels exploits the spherical harmonics coefficient to represent the sparse grid voxel representation. From the optimized spherical harmonics (SH) coefficient, Plenoxels synthesizes the view-dependent color image without any neural networks. Specifically, it interpolates the sampled grid SH coefficient which is close to the novel viewpoint ray input. Through the radiance fields without neural networks, Plenoxels renders the scene 11 minutes (1 day for Vanilla NeRF which is more than a 100× speedup)

plenoxels

Scores

Blender

ScenePSNRSSIMLPIPSCheckpoint
chair34.110.97690.0296link
drums25.420.93230.0657link
ficus31.940.97590.0258link
hotdog36.690.98050.0367link
lego34.340.97530.0272link
materials29.260.94950.0553link
mic33.360.98510.0148link
ship30.100.89010.1313link

MS-Blender

ScenePSNRSSIMLPIPSCheckpoint
chair32.870.96880.0391link
drums25.340.93000.0688link
ficus30.350.97220.0311link
hotdog34.890.97720.0363link
lego31.420.96530.0374link
materials28.480.96000.0537link
mic31.590.97910.0355link
ship29.040.89670.1009link

LLFF

ScenePSNRSSIMLPIPSCheckpoint
fern24.910.80760.2438link
flower28.170.86760.1733link
fortress31.360.89020.1661link
horns27.770.86180.2218link
leaves21.190.74290.2165link
orchids20.010.65270.2892link
room31.330.94140.1884link
trex26.540.88740.2523link

Tanks and Temples

ScenePSNRSSIMLPIPSCheckpoint
M6017.740.67010.4525link
Playground22.620.68910.4636link
Train17.660.61180.4608link
Truck22.520.73730.3935link

LF

ScenePSNRSSIMLPIPSCheckpoint
Africa14.990.64370.4713link
Basket16.020.69350.4555link
Ship25.400.80630.2886link
Statue28.960.89000.2219link
Torch24.840.82440.2757link

NeRF-360-v2

ScenePSNRSSIMLPIPSCheckpoint
bicycle21.420.42550.5709link
bonsai26.210.80190.3305link
counter25.620.75900.3520link
garden23.130.54710.4360link
kitchen25.090.66700.3560link
room28.350.83730.3358link
stump22.880.50490.5381link

Shiny Blender

ScenePSNRSSIMLPIPSCheckpoint
ball24.520.83160.2738link
car26.110.90530.0855link
coffee31.550.96290.1442link
helmet26.940.91280.1704link
teapot44.250.99580.0158link
toaster19.500.77170.2443link