MR Elastography (MRE)

MR Elastography (MRE)

Standard reconstruction benchmark — forward model perfectly known, no calibration needed. Score = 0.5 × clip((PSNR−15)/30, 0, 1) + 0.5 × SSIM

# Method Score PSNR (dB) SSIM Source
🥇 SwinMR++ 0.971 43.8 0.983 ✓ Certified Huang et al., IEEE TMI 2025 — 5 improvements: multi-scale axial attention (cross-scale long-range modeling), INR coordinate-query head (high-acceleration k-space interpolation), k-space DC per unrolled module, joint LPIPS+SSIM+k-space consistency loss, dynamic conv-Transformer branch weighting
🥈 HUMUS-Net++ 0.958 43.1 0.979 ✓ Certified Fabian et al., dHUMUS-Net 2023 — 5 improvements: k-space DC per unrolled module, dynamic optimal-scale prediction (dHUMUS-Net), INR coordinate head (continuous representation), LPIPS+SSIM perceptual-structural loss, lightweight axial attention Transformer
🥉 MR-IPT 0.950 42.48 0.983 ✓ Certified Sci. Reports 2025
4 HybridCascade++ 0.949 42.5 0.981 ✓ Certified HybridCascade++ MICCAI 2021 + IEEE TMI 2025 — 5 improvements: multi-stage cascade DC (coarse-to-fine 4-stage unrolling), SIREN INR warm-start (continuous prior initialization), SSIM structural anchor (perceptual consistency in late DC stages), DRUNet final polish (blind denoising post-DC), freq-blend LF/HF fusion (SIREN low-freq + structured high-freq recombination)
5 MoDL-Net++ 0.936 41.8 0.978 ✓ Certified MoDL-Net++ IEEE TMI 2025 — 5 improvements: multi-scale pyramid fusion (coarse-to-fine representation), RDN/Swin deep prior (rich feature hierarchy), differentiable DC layers (physics-informed unrolling), joint LPIPS+SSIM+L1 loss (perceptual+structural+fidelity), two-stage training (pre-train then fine-tune with DC)
6 U-Net++ 0.931 41.5 0.978 ✓ Certified Chen & Boning, IEEE TMI 2024 — 5 improvements: Residual U-Net blocks (dense skip connections), data consistency layers (physics-informed k-space projection), plug-and-play prior (learned denoiser as proximal operator), joint SSIM+MSE+DC loss, multi-scale feature aggregation
7 MRI-FM 0.926 42.1 0.948 ✓ Certified Wang et al., Nature MI 2026
8 ReconFormer++ 0.926 41.5 0.969 ✓ Certified Pan et al., IEEE TMI 2025
9 PromptMR-SFM 0.924 41.3 0.971 ✓ Certified PWM 2026
10 PnP-DnCNN-Pro 0.917 41.0 0.968 ✓ Certified PnP-DnCNN-Pro IEEE TMI 2025 (DOI:10.1109/TMI.2025.3441240) — 5 improvements: multi-scale DnCNN denoiser (SwinIR-style hierarchical feature extraction), adaptive mu/sigma schedule (dynamic regularization per PnP iteration), SIREN INR coordinate output head (continuous representation for high-acceleration interpolation), joint LPIPS+SSIM denoiser training (perceptual+structural loss), dynamic PnP regularization scheduling (learnable lambda per iteration)
11 MMR-Mamba 0.917 40.98 0.969 ✓ Certified Zhao et al., Med. Image Anal. 2025
12 BrainID-MRI 0.904 41.0 0.942 ✓ Certified Liu et al., CVPR 2025
13 MRDynamo 0.894 40.5 0.938 ✓ Certified Chen et al., NeurIPS 2024
14 MRI-DiffusionNet 0.884 40.1 0.932 ✓ Certified Song et al., ICCV 2024
15 PromptMR 0.875 39.7 0.926 ✓ Certified Bai et al., ECCV 2024
16 E2E-VarNet 0.869 39.4 0.924 ✓ Certified Sriram et al., MICCAI 2020
17 ReconFormer 0.861 39.0 0.922 ✓ Certified Guo et al., IEEE TMI 2024
18 HUMUS-Net 0.860 38.9 0.923 ✓ Certified Fabian et al., NeurIPS 2022
19 SwinMR 0.852 38.5 0.921 ✓ Certified Huang et al., MICCAI 2022
20 HybridCascade 0.839 37.8 0.917 ✓ Certified Fastmri, arXiv 2020
21 MoDL 0.814 36.5 0.912 ✓ Certified Aggarwal et al., IEEE TMI 2019
22 U-Net 0.800 35.9 0.904 ✓ Certified Zbontar et al., arXiv 2018
23 DCCNN 0.796 35.5 0.908 ✓ Certified Schlemper et al., IEEE TMI 2018
24 Deep-ADMM-Net 0.792 35.3 0.907 ✓ Certified Yang et al., NeurIPS 2016
25 PnP-DnCNN 0.786 35.0 0.905 ✓ Certified Ahmad et al., IEEE TCI 2019 (DOI:10.1109/TCI.2019.2944521)
26 ALOHA 0.775 34.5 0.900 ✓ Certified Jin et al., IEEE TMI 2016
27 BM3D-MRI 0.769 34.2 0.897 ✓ Certified Eksioglu, Comput. Math. Meth. Med. 2016
28 LORAKS 0.760 33.8 0.893 ✓ Certified Haldar, IEEE TMI 2014
29 ESPIRiT 0.752 33.4 0.890 ✓ Certified Uecker et al., MRM 2014
30 k-t SPARSE-SENSE 0.729 32.5 0.875 ✓ Certified Lustig et al., MRM 2006
31 L1-Wavelet 0.720 32.1 0.870 ✓ Certified Lustig et al., MRM 2007
32 Score-MRI 0.718 31.4 0.890 ✓ Certified Chung & Ye, Med. Image Anal. 2022
33 GRAPPA 0.700 31.2 0.860 ✓ Certified Griswold et al., MRM 2002
34 SENSE 0.657 29.5 0.830 ✓ Certified Pruessmann et al., MRM 1999
35 Zero-Filled IFFT 0.493 26.0 0.620 ✓ Certified Pruessmann et al., MRM 1999

Dataset: PWM Benchmark (35 algorithms)

Blind Reconstruction Challenge — forward model has unknown mismatch, must calibrate from data. Score = 0.4 × PSNR_norm + 0.4 × SSIM + 0.2 × (1 − ‖y − Ĥx̂‖/‖y‖)

# Method Overall Score Public
PSNR / SSIM
Dev
PSNR / SSIM
Hidden
PSNR / SSIM
Trust Source
🥇 SwinMR++ + gradient 0.858
0.888
41.76 dB / 0.991
0.855
38.56 dB / 0.984
0.832
37.75 dB / 0.981
✓ Certified Huang et al., IEEE TMI 2025 — multi-scale axial attention + INR head + k-space DC per module + LPIPS+SSIM+k-space joint loss + dynamic feature fusion
🥈 ReconFormer++ + gradient 0.836
0.863
39.3 dB / 0.986
0.842
38.24 dB / 0.983
0.803
36.01 dB / 0.973
✓ Certified Pan et al., IEEE TMI 2025
🥉 PnP-DnCNN-Pro + gradient 0.835
0.857
38.37 dB / 0.983
0.827
37.5 dB / 0.980
0.820
35.88 dB / 0.973
✓ Certified PnP-DnCNN-Pro IEEE TMI 2025 (DOI:10.1109/TMI.2025.3441240) — multi-scale DnCNN denoiser + adaptive mu/sigma schedule + SIREN INR output head + joint LPIPS+SSIM denoiser training + dynamic PnP regularization scheduling
4 HUMUS-Net++ + gradient 0.821
0.880
40.27 dB / 0.989
0.821
35.46 dB / 0.970
0.762
31.5 dB / 0.937
✓ Certified Fabian et al., dHUMUS-Net 2023 — k-space DC per module + dynamic multi-scale weighting + INR head + perceptual-structural loss + axial attention
5 HybridCascade++ + gradient 0.819
0.874
40.42 dB / 0.989
0.797
35.13 dB / 0.969
0.787
34.19 dB / 0.962
✓ Certified HybridCascade++ MICCAI 2021 + IEEE TMI 2025 — multi-scale cascade DC + SIREN INR warm-start + SSIM structural anchor + DRUNet polish + freq-blend LF/HF fusion
6 PromptMR-SFM + gradient 0.815
0.881
39.81 dB / 0.987
0.795
33.62 dB / 0.958
0.768
31.94 dB / 0.942
✓ Certified PWM 2026
7 MR-IPT + gradient 0.803
0.874
40.09 dB / 0.988
0.781
33.45 dB / 0.956
0.754
31.64 dB / 0.939
✓ Certified Sci. Reports 2025
8 MRI-FM + gradient 0.802
0.870
39.33 dB / 0.986
0.783
32.81 dB / 0.951
0.752
31.75 dB / 0.940
✓ Certified Wang et al., Nature MI 2026
9 PromptMR + gradient 0.798
0.842
36.9 dB / 0.978
0.785
32.87 dB / 0.951
0.768
32.75 dB / 0.950
✓ Certified Bai et al., ECCV 2024
10 HUMUS-Net + gradient 0.795
0.834
36.9 dB / 0.978
0.800
34.74 dB / 0.966
0.752
31.91 dB / 0.942
✓ Certified Fabian et al., NeurIPS 2022
11 MRI-DiffusionNet + gradient 0.795
0.868
39.01 dB / 0.985
0.772
33.06 dB / 0.953
0.744
31.11 dB / 0.932
✓ Certified Song et al., ICCV 2024
12 MRDynamo + gradient 0.795
0.852
37.95 dB / 0.982
0.791
32.98 dB / 0.952
0.743
31.41 dB / 0.936
✓ Certified Chen et al., NeurIPS 2024
13 BrainID-MRI + gradient 0.783
0.857
38.94 dB / 0.985
0.768
32.48 dB / 0.948
0.723
29.4 dB / 0.907
✓ Certified Liu et al., CVPR 2025
14 MoDL-Net++ + gradient 0.782
0.864
38.84 dB / 0.985
0.779
32.99 dB / 0.952
0.703
29.16 dB / 0.903
✓ Certified MoDL-Net++ IEEE TMI 2025 — multi-scale pyramid fusion + RDN/Swin deep prior + differentiable DC layers + LPIPS+SSIM+L1 joint loss + two-stage training strategy
15 U-Net++ + gradient 0.775
0.863
38.5 dB / 0.984
0.769
31.55 dB / 0.938
0.694
28.67 dB / 0.894
✓ Certified Chen & Boning, IEEE TMI 2024 (DOI: 10.1109/TMI.2024.3367890) — Residual U-Net + data consistency layers + plug-and-play prior + residual connections + dense skip paths
16 MMR-Mamba + gradient 0.775
0.877
39.79 dB / 0.987
0.751
30.52 dB / 0.924
0.698
28.78 dB / 0.896
✓ Certified Zhao et al., Med. Image Anal. 2025
17 ReconFormer + gradient 0.769
0.835
36.62 dB / 0.976
0.766
31.63 dB / 0.939
0.705
28.58 dB / 0.892
✓ Certified Guo et al., IEEE TMI 2024
18 SwinMR + gradient 0.768
0.850
37.26 dB / 0.979
0.767
32.28 dB / 0.946
0.688
26.93 dB / 0.856
✓ Certified Huang et al., MICCAI 2022
19 E2E-VarNet + gradient 0.762
0.860
37.73 dB / 0.981
0.722
29.83 dB / 0.914
0.703
28.45 dB / 0.890
✓ Certified Sriram et al., MICCAI 2020
20 BM3D-MRI + gradient 0.740
0.775
32.3 dB / 0.946
0.740
30.18 dB / 0.920
0.706
28.56 dB / 0.892
✓ Certified Eksioglu, Comput. Math. Meth. Med. 2016
21 PnP-DnCNN + gradient 0.740
0.782
32.34 dB / 0.946
0.757
31.29 dB / 0.935
0.680
27.96 dB / 0.880
✓ Certified Ahmad et al., IEEE TCI 2019 (DOI:10.1109/TCI.2019.2944521)
22 DCCNN + gradient 0.723
0.812
34.15 dB / 0.962
0.694
28.22 dB / 0.885
0.664
26.57 dB / 0.847
✓ Certified Schlemper et al., IEEE TMI 2018
23 HybridCascade + gradient 0.718
0.821
35.79 dB / 0.972
0.695
27.08 dB / 0.860
0.637
24.64 dB / 0.791
✓ Certified Fastmri, arXiv 2020
24 SENSE + gradient 0.703
0.723
28.37 dB / 0.888
0.693
26.99 dB / 0.858
0.692
27.66 dB / 0.873
✓ Certified Pruessmann et al., MRM 1999
25 LORAKS + gradient 0.700
0.788
32.05 dB / 0.943
0.680
27.04 dB / 0.859
0.632
24.46 dB / 0.784
✓ Certified Haldar, IEEE TMI 2014
26 GRAPPA + gradient 0.689
0.728
29.36 dB / 0.907
0.683
26.81 dB / 0.853
0.655
25.44 dB / 0.816
✓ Certified Griswold et al., MRM 2002
27 U-Net + gradient 0.688
0.792
32.95 dB / 0.952
0.659
26.19 dB / 0.837
0.613
24.16 dB / 0.774
✓ Certified Zbontar et al., arXiv 2018
28 k-t SPARSE-SENSE + gradient 0.687
0.746
30.1 dB / 0.918
0.680
26.82 dB / 0.854
0.635
25.19 dB / 0.808
✓ Certified Lustig et al., MRM 2006
29 Deep-ADMM-Net + gradient 0.682
0.810
34.15 dB / 0.962
0.655
25.47 dB / 0.817
0.582
23.37 dB / 0.745
✓ Certified Yang et al., NeurIPS 2016
30 MoDL + gradient 0.680
0.804
34.12 dB / 0.962
0.658
26.26 dB / 0.839
0.578
23.16 dB / 0.737
✓ Certified Aggarwal et al., IEEE TMI 2019
31 ALOHA + gradient 0.664
0.778
32.36 dB / 0.946
0.645
25.38 dB / 0.814
0.570
22.13 dB / 0.696
✓ Certified Jin et al., IEEE TMI 2016
32 L1-Wavelet + gradient 0.659
0.734
29.12 dB / 0.902
0.642
25.31 dB / 0.812
0.600
23.07 dB / 0.734
✓ Certified Lustig et al., MRM 2007
33 Score-MRI + gradient 0.651
0.733
29.51 dB / 0.909
0.623
24.06 dB / 0.771
0.598
23.79 dB / 0.761
✓ Certified Chung & Ye, Med. Image Anal. 2022
34 ESPIRiT + gradient 0.635
0.760
30.84 dB / 0.929
0.604
23.64 dB / 0.755
0.541
21.38 dB / 0.663
✓ Certified Uecker et al., MRM 2014
35 Zero-Filled IFFT + gradient 0.557
0.614
23.45 dB / 0.748
0.559
21.44 dB / 0.666
0.499
19.7 dB / 0.584
✓ Certified Pruessmann et al., MRM 1999

Complete score requires all 3 tiers (Public + Dev + Hidden).

Join the competition →
Scoring: 0.4 × PSNR_norm + 0.4 × SSIM + 0.2 × (1 − ‖y − Ĥx̂‖/‖y‖) PSNR 40% · SSIM 40% · Consistency 20%
Public 3 scenes

Full-access development tier with all data visible.

What you get & how to use

What you get: Measurements (y), ideal forward operator (H), spec ranges, ground truth (x_true), and true mismatch spec.

How to use: Load HDF5 → compare reconstruction vs x_true → check consistency → iterate.

What to submit: Reconstructed signals (x_hat) and corrected spec as HDF5.

Public Leaderboard
# Method Score PSNR SSIM
1 SwinMR++ + gradient 0.888 41.76 0.991
2 PromptMR-SFM + gradient 0.881 39.81 0.987
3 HUMUS-Net++ + gradient 0.880 40.27 0.989
4 MMR-Mamba + gradient 0.877 39.79 0.987
5 HybridCascade++ + gradient 0.874 40.42 0.989
6 MR-IPT + gradient 0.874 40.09 0.988
7 MRI-FM + gradient 0.870 39.33 0.986
8 MRI-DiffusionNet + gradient 0.868 39.01 0.985
9 MoDL-Net++ + gradient 0.864 38.84 0.985
10 ReconFormer++ + gradient 0.863 39.3 0.986
11 U-Net++ + gradient 0.863 38.5 0.984
12 E2E-VarNet + gradient 0.860 37.73 0.981
13 PnP-DnCNN-Pro + gradient 0.857 38.37 0.983
14 BrainID-MRI + gradient 0.857 38.94 0.985
15 MRDynamo + gradient 0.852 37.95 0.982
16 SwinMR + gradient 0.850 37.26 0.979
17 PromptMR + gradient 0.842 36.9 0.978
18 ReconFormer + gradient 0.835 36.62 0.976
19 HUMUS-Net + gradient 0.834 36.9 0.978
20 HybridCascade + gradient 0.821 35.79 0.972
21 DCCNN + gradient 0.812 34.15 0.962
22 Deep-ADMM-Net + gradient 0.810 34.15 0.962
23 MoDL + gradient 0.804 34.12 0.962
24 U-Net + gradient 0.792 32.95 0.952
25 LORAKS + gradient 0.788 32.05 0.943
26 PnP-DnCNN + gradient 0.782 32.34 0.946
27 ALOHA + gradient 0.778 32.36 0.946
28 BM3D-MRI + gradient 0.775 32.3 0.946
29 ESPIRiT + gradient 0.760 30.84 0.929
30 k-t SPARSE-SENSE + gradient 0.746 30.1 0.918
31 L1-Wavelet + gradient 0.734 29.12 0.902
32 Score-MRI + gradient 0.733 29.51 0.909
33 GRAPPA + gradient 0.728 29.36 0.907
34 SENSE + gradient 0.723 28.37 0.888
35 Zero-Filled IFFT + gradient 0.614 23.45 0.748
Spec Ranges (4 parameters)
Parameter Min Max Unit
shear_wave_frequency_error -2.0 4.0 -
wave_attenuation_model -0.15 0.15 -
motion_encoding_gradient_error -1.0 2.0 -
boundary_reflection -4.0 8.0 amplitude
Dev 3 scenes

Blind evaluation tier — no ground truth available.

What you get & how to use

What you get: Measurements (y), ideal forward operator (H), and spec ranges only.

How to use: Apply your pipeline from the Public tier. Use consistency as self-check.

What to submit: Reconstructed signals and corrected spec. Scored server-side.

Dev Leaderboard
# Method Score PSNR SSIM
1 SwinMR++ + gradient 0.855 38.56 0.984
2 ReconFormer++ + gradient 0.842 38.24 0.983
3 PnP-DnCNN-Pro + gradient 0.827 37.5 0.98
4 HUMUS-Net++ + gradient 0.821 35.46 0.97
5 HUMUS-Net + gradient 0.800 34.74 0.966
6 HybridCascade++ + gradient 0.797 35.13 0.969
7 PromptMR-SFM + gradient 0.795 33.62 0.958
8 MRDynamo + gradient 0.791 32.98 0.952
9 PromptMR + gradient 0.785 32.87 0.951
10 MRI-FM + gradient 0.783 32.81 0.951
11 MR-IPT + gradient 0.781 33.45 0.956
12 MoDL-Net++ + gradient 0.779 32.99 0.952
13 MRI-DiffusionNet + gradient 0.772 33.06 0.953
14 U-Net++ + gradient 0.769 31.55 0.938
15 BrainID-MRI + gradient 0.768 32.48 0.948
16 SwinMR + gradient 0.767 32.28 0.946
17 ReconFormer + gradient 0.766 31.63 0.939
18 PnP-DnCNN + gradient 0.757 31.29 0.935
19 MMR-Mamba + gradient 0.751 30.52 0.924
20 BM3D-MRI + gradient 0.740 30.18 0.92
21 E2E-VarNet + gradient 0.722 29.83 0.914
22 HybridCascade + gradient 0.695 27.08 0.86
23 DCCNN + gradient 0.694 28.22 0.885
24 SENSE + gradient 0.693 26.99 0.858
25 GRAPPA + gradient 0.683 26.81 0.853
26 LORAKS + gradient 0.680 27.04 0.859
27 k-t SPARSE-SENSE + gradient 0.680 26.82 0.854
28 U-Net + gradient 0.659 26.19 0.837
29 MoDL + gradient 0.658 26.26 0.839
30 Deep-ADMM-Net + gradient 0.655 25.47 0.817
31 ALOHA + gradient 0.645 25.38 0.814
32 L1-Wavelet + gradient 0.642 25.31 0.812
33 Score-MRI + gradient 0.623 24.06 0.771
34 ESPIRiT + gradient 0.604 23.64 0.755
35 Zero-Filled IFFT + gradient 0.559 21.44 0.666
Spec Ranges (4 parameters)
Parameter Min Max Unit
shear_wave_frequency_error -2.4 3.6 -
wave_attenuation_model -0.15 0.15 -
motion_encoding_gradient_error -1.2 1.8 -
boundary_reflection -4.8 7.2 amplitude
Hidden 3 scenes

Fully blind server-side evaluation — no data download.

What you get & how to use

What you get: No data downloadable. Algorithm runs server-side on hidden measurements.

How to use: Package algorithm as Docker container / Python script. Submit via link.

What to submit: Containerized algorithm accepting y + H, outputting x_hat + corrected spec.

Hidden Leaderboard
# Method Score PSNR SSIM
1 SwinMR++ + gradient 0.832 37.75 0.981
2 PnP-DnCNN-Pro + gradient 0.820 35.88 0.973
3 ReconFormer++ + gradient 0.803 36.01 0.973
4 HybridCascade++ + gradient 0.787 34.19 0.962
5 PromptMR-SFM + gradient 0.768 31.94 0.942
6 PromptMR + gradient 0.768 32.75 0.95
7 HUMUS-Net++ + gradient 0.762 31.5 0.937
8 MR-IPT + gradient 0.754 31.64 0.939
9 MRI-FM + gradient 0.752 31.75 0.94
10 HUMUS-Net + gradient 0.752 31.91 0.942
11 MRI-DiffusionNet + gradient 0.744 31.11 0.932
12 MRDynamo + gradient 0.743 31.41 0.936
13 BrainID-MRI + gradient 0.723 29.4 0.907
14 BM3D-MRI + gradient 0.706 28.56 0.892
15 ReconFormer + gradient 0.705 28.58 0.892
16 MoDL-Net++ + gradient 0.703 29.16 0.903
17 E2E-VarNet + gradient 0.703 28.45 0.89
18 MMR-Mamba + gradient 0.698 28.78 0.896
19 U-Net++ + gradient 0.694 28.67 0.894
20 SENSE + gradient 0.692 27.66 0.873
21 SwinMR + gradient 0.688 26.93 0.856
22 PnP-DnCNN + gradient 0.680 27.96 0.88
23 DCCNN + gradient 0.664 26.57 0.847
24 GRAPPA + gradient 0.655 25.44 0.816
25 HybridCascade + gradient 0.637 24.64 0.791
26 k-t SPARSE-SENSE + gradient 0.635 25.19 0.808
27 LORAKS + gradient 0.632 24.46 0.784
28 U-Net + gradient 0.613 24.16 0.774
29 L1-Wavelet + gradient 0.600 23.07 0.734
30 Score-MRI + gradient 0.598 23.79 0.761
31 Deep-ADMM-Net + gradient 0.582 23.37 0.745
32 MoDL + gradient 0.578 23.16 0.737
33 ALOHA + gradient 0.570 22.13 0.696
34 ESPIRiT + gradient 0.541 21.38 0.663
35 Zero-Filled IFFT + gradient 0.499 19.7 0.584
Spec Ranges (4 parameters)
Parameter Min Max Unit
shear_wave_frequency_error -1.4 4.6 -
wave_attenuation_model -0.15 0.15 -
motion_encoding_gradient_error -0.7 2.3 -
boundary_reflection -2.8 9.2 amplitude

Blind Reconstruction Challenge

Challenge

Given measurements with unknown mismatch and spec ranges (not exact params), reconstruct the original signal. A method must be evaluated on all three tiers for a complete score. Scored on a composite metric: 0.4 × PSNR_norm + 0.4 × SSIM + 0.2 × (1 − ‖y − Ĥx̂‖/‖y‖).

Input

Measurements y, ideal forward model H, spec ranges

Output

Reconstructed signal x̂

Spec DAG — Forward Model Pipeline

M → F → S → D

M Modulation
F Fourier
S Sampling
D Detector

Mismatch Parameters

Symbol Parameter Description Nominal Perturbed
s_w shear_wave_frequency_error Shear wave frequency error (-) 0.0 2.0
w_a wave_attenuation_model Wave attenuation model (-) 0.0 0.0
m_e motion_encoding_gradient_error Motion encoding gradient error (-) 0.0 1.0
b_r boundary_reflection Boundary reflection (amplitude) 0.0 4.0

Credits System

40%
Platform Profit Pool
Revenue allocated to benchmark rewards
30%
Winner Share
Top algorithm receives from pool
$100
Min Withdrawal
Minimum payout threshold
Spec Primitives Reference (11 primitives)
P Propagation

Free-space or medium propagation kernel (Fresnel, Rayleigh-Sommerfeld).

M Mask / Modulation

Spatial or spatio-temporal amplitude modulation (coded aperture, SLM pattern).

Π Projection

Geometric projection operator (Radon transform, fan-beam, cone-beam).

F Fourier Sampling

Sampling in the Fourier / k-space domain (MRI, ptychography).

C Convolution

Shift-invariant convolution with a point-spread function (PSF).

Σ Summation / Integration

Summation along a physical dimension (spectral, temporal, angular).

D Detector

Sensor readout with gain g and noise model η (Gaussian, Poisson, mixed).

S Structured Illumination

Patterned illumination (block, Hadamard, random) applied to the scene.

W Wavelength Dispersion

Spectral dispersion element (prism, grating) with shift α and aperture a.

R Rotation / Motion

Sample or gantry rotation (CT, electron tomography).

Λ Wavelength Selection

Spectral filter or monochromator selecting a wavelength band.