Overview

• We propose a modification to the NeRF rendering equations that bridges the understanding of radiance fields and light fields.
• We provide theoretical proof that our formulation is a better numerical estimator of the radiance integration.
• Our method can be seamlessly integrated into any NeRF framework with only a few lines of code change.
• Experiments with different NeRF variations show consistent improvements in the rendering quality of view-dependent effects.

Results

NeRF synthetic data

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"Coffee"

Ground truth [NeRF | Ours]

"Helmet"

Ground truth [NeRF | Ours]

"Lego"

Ground truth [NeRF | Ours]

"Materials"

Ground truth [NeRF | Ours]

Shiny real scene

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"CD"	Ground truth [NeRF | Ours]

Different NeRF variations

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[NeRF | Ours]

• Posi. enc: HashGrid
  View enc: SH
  

  
• Posi. enc: TiledGrid
  View enc: SH
  

  
• Posi. enc: Sinusoidal
  View enc: SH
  

  
• Posi. enc: HashGrid
  View enc: Sinusoidal
  

  
• Posi. enc: TiledGrid
  View enc: Sinusoidal
  

  
• Posi. enc: Sinusoidal
  View enc: Sinusoidal