# Image Denoising on 20 grayscale images sigma=25

Source: [Image Denoising on 20 grayscale images sigma=25](<https://www.sota2.com/research/sota/image-denoising-on-20-grayscale-images-sigma-25>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2026-02-26T05:57:07.946Z

Evaluation of Image Denoising performance on the '20 grayscale images sigma=25' dataset, measured by PSNR and SSIM.

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

| Scope | Recorded value |
| --- | --- |
| Task | Image Denoising |
| Dataset (including any stated split) | 20 grayscale images sigma=25 |
| Metric | PSNR (dB) |
| Unit | SCALAR |
| Direction | Higher is better |
| Results loaded | 8 of 8 |
| Coverage | All results currently returned for this benchmark |

Evaluation settings may differ between results. The original papers and recorded configurations are needed to establish comparability. A shared metric name alone does not establish an identical protocol.

## Metrics

- [PSNR (dB)](<https://www.sota2.com/research/sota/image-denoising-on-20-grayscale-images-sigma-25.md?metric=PSNR%20(dB)>): Higher is better; unit: SCALAR.

- [SSIM](<https://www.sota2.com/research/sota/image-denoising-on-20-grayscale-images-sigma-25.md?metric=SSIM>): Higher is better; unit: PERCENT.

## Recorded results

| Method | PSNR (dB) | Result date | Report paper |
| --- | --- | --- | --- |
| DnCNN | 30.22 | Not recorded | 68fa649d1e209131cea05938 |
| WNNM | 30.05 | Not recorded | 68fa649d1e209131cea05938 |
| BM3D-SAPCA | 30.02 | Not recorded | 68fa649d1e209131cea05938 |
| TWSC | 29.98 | Not recorded | 68fa649d1e209131cea05938 |
| TNRD | 29.87 | Not recorded | 68fa649d1e209131cea05938 |
| LSSC | 29.84 | Not recorded | 68fa649d1e209131cea05938 |
| NCSR | 29.76 | Not recorded | 68fa649d1e209131cea05938 |
| WSC | 29.57 | Not recorded | 68fa649d1e209131cea05938 |

### DnCNN

PSNR (dB): 30.22. Result ID: 698c4ea237894ef7d9cd661d.

[Reporting paper](<https://www.sota2.com/research/paper/68fa649d1e209131cea05938.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa63631e209131ce9fe4fc.md>)

[Implementation](<https://github.com/cszn/DnCNN>)

Recorded evaluation configuration: {"type":"Discriminative learning based"}. This record does not assert independent reproduction.

### WNNM

PSNR (dB): 30.05. Result ID: 698c4ea237894ef7d9cd661b.

[Reporting paper](<https://www.sota2.com/research/paper/68fa649d1e209131cea05938.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### BM3D-SAPCA

PSNR (dB): 30.02. Result ID: 698c4ea237894ef7d9cd6618.

[Reporting paper](<https://www.sota2.com/research/paper/68fa649d1e209131cea05938.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### TWSC

PSNR (dB): 29.98. Result ID: 698c4ea237894ef7d9cd661f.

[Reporting paper](<https://www.sota2.com/research/paper/68fa649d1e209131cea05938.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa649d1e209131cea05938.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### TNRD

PSNR (dB): 29.87. Result ID: 698c4ea237894ef7d9cd661c.

[Reporting paper](<https://www.sota2.com/research/paper/68fa649d1e209131cea05938.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa61ca1e209131ce9f5e69.md>)

Recorded evaluation configuration: {"type":"Discriminative learning based"}. This record does not assert independent reproduction.

### LSSC

PSNR (dB): 29.84. Result ID: 698c4ea237894ef7d9cd6619.

[Reporting paper](<https://www.sota2.com/research/paper/68fa649d1e209131cea05938.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### NCSR

PSNR (dB): 29.76. Result ID: 698c4ea237894ef7d9cd661a.

[Reporting paper](<https://www.sota2.com/research/paper/68fa649d1e209131cea05938.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### WSC

PSNR (dB): 29.57. Result ID: 698c4ea237894ef7d9cd661e.

[Reporting paper](<https://www.sota2.com/research/paper/68fa649d1e209131cea05938.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa649d1e209131cea05938.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

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