Living room

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Images
MAPE
1: Reference
2: PT+ReSTIR @ 1spp
3: PT+ReSTIR+NRC (Ours) @ 1spp
4: PT+ReSTIR+DDGI @ 1spp
5: PT+ReSTIR @ 64spp
6: PT+ReSTIR+NRC (Ours) @ 64spp
7: PT+ReSTIR+DDGI @ 64spp
8: NRC at primary vertex
ReferencePT+ReSTIR @ 1sppPT+ReSTIR+NRC (Ours) @ 1sppPT+ReSTIR+DDGI @ 1sppPT+ReSTIR @ 64sppPT+ReSTIR+NRC (Ours) @ 64sppPT+ReSTIR+DDGI @ 64sppNRC at primary vertex
1: PT+ReSTIR @ 1spp
2: PT+ReSTIR+NRC (Ours) @ 1spp
3: PT+ReSTIR+DDGI @ 1spp
4: PT+ReSTIR @ 64spp
5: PT+ReSTIR+NRC (Ours) @ 64spp
6: PT+ReSTIR+DDGI @ 64spp
7: NRC at primary vertex
PT+ReSTIR @ 1sppPT+ReSTIR+NRC (Ours) @ 1sppPT+ReSTIR+DDGI @ 1sppPT+ReSTIR @ 64sppPT+ReSTIR+NRC (Ours) @ 64sppPT+ReSTIR+DDGI @ 64sppNRC at primary vertex

Charts

Lower values are better except for Efficiency (for SSIM, we plot 1-SSIM).
MAPE
SMAPE
L1
MRSE
L2
1-SSIM

Metrics

MetricPT+ReSTIR @ 1sppPT+ReSTIR+NRC (Ours) @ 1sppPT+ReSTIR+DDGI @ 1sppPT+ReSTIR @ 64sppPT+ReSTIR+NRC (Ours) @ 64sppPT+ReSTIR+DDGI @ 64sppNRC at primary vertex
Render Time8.3ms9.0ms7.5ms8.3ms9.0ms7.5ms8.9ms
SPP11164646464
MAPE1.150.4010.4580.4130.08820.3780.106
SMAPE1.010.4050.3400.3820.08460.2840.101
L10.4300.1540.1580.1400.03290.1220.0368
MRSE19.60.8570.8741.120.02120.2560.0213
L22.780.2090.1440.1564.84e−30.02906.25e−3
1-SSIM0.9100.8670.6220.8300.3390.2480.151
(c) the authors