Research map / 3D vision / NeRF and radiance fields
Masked Wavelet Representation for Compact Neural Radiance Fields
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Measured effects reported in the paper
| What was changed | Where | Measured | Effect |
|---|---|---|---|
| Use wavelet coefficients instead of spatial grid coefficients (ablation) | Grid-based neural fields · NeRF synthetic | PSNR at high sparsity | Helped |
| Increase the wavelet transform level (ablation) | Wavelet grid representation · NeRF synthetic | PSNR and sparsity | Helped |
| Add level-wise coefficient scaling (ablation) | DWT grid representation · NeRF synthetic | PSNR: 31.145 -> 31.949 | Helped |
| Replace biorthogonal 4.4 with another tested wavelet function (ablation) | Masked wavelet representation · NeRF synthetic | PSNR: 31.949 -> 31.889 (Haar); 31.846 (Coiflets 1); 31.734 (Daubechies 4); 31.727 (reverse biorthogonal 4.4) | Mixed |
| Use DCT instead of DWT (ablation) | Frequency-based grid representation · NeRF synthetic | PSNR: 31.325 vs 31.949 | Hurt |
| Use trainable masks rather than absolute-threshold pruning (ablation) | Wavelet grid coefficients · NeRF synthetic | PSNR: 32.33 vs 32.24 at τ=0.5 and λm=2.5e-11; 28.95 vs 31.95 at τ=1.0 and λm=1.0e-10; 21.40 vs 31.95 at τ=1.6 and λm=1.0e-10 | Mixed |
| Increase mask regularization strength from λm=2.5e-11 to λm=1.0e-10 (ablation) | Masked wavelet representation · NeRF synthetic | PSNR: 32.24 -> 31.95 | Hurt |
| Add RLE, Huffman encoding, 8-bit casting, and level-wise encoding (ablation) | Binarized masks · NeRF synthetic | mask size (MB): 2.07 -> 0.28 | Helped |
| Change mask scanning order (ablation) | Compressed masks · NeRF synthetic | size (MB): 0.83 (no scan); 0.83 (zigzag); 0.85 (morton); 0.83 (spiral) | No clear effect |
| Increase the grid backbone from VM-192 to VM-384 (ablation) | Masked wavelet representation · NeRF synthetic | PSNR: 32.24 -> 32.66 at λm=5e-11 and resolution 500 | Helped |
Closest papers by meaning
- Neural NeRF Compression (ICML 2024 · similarity 0.90)
- Compact 3D Gaussian Representation for Radiance Field (CVPR 2024 · similarity 0.88)
- NeRFCodec: Neural Feature Compression Meets Neural Radiance Fields for Memory-Efficient Scene Representation (CVPR 2024 · similarity 0.88)
- Mask-Based Modeling for Neural Radiance Fields (ICLR 2024 · similarity 0.88)
- Learning Robust Generalizable Radiance Field with Visibility and Feature Augmented Point Representation (ICLR 2024 · similarity 0.87)
- CodecNeRF: Toward Fast Encoding and Decoding, Compact, and High-quality Novel-view Synthesis (AAAI 2025 · similarity 0.87)
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