# Image Super-Resolution on ImageNet 256x256 noiseless 4x SR (test)

Source: [Image Super-Resolution on ImageNet 256x256 noiseless 4x SR (test)](<https://www.sota2.com/research/sota/image-super-resolution-on-imagenet-256x256-noiseless-4x-sr-test>)

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

Data updated: 2026-03-20T09:33:33.825Z

Evaluation of Super-Resolution models using the noiseless 4x downscaled test split of ImageNet rendered at 256x256 resolution, measured by PSNR, LPIPS, and FID.

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 Super-Resolution |
| Dataset (including any stated split) | ImageNet 256x256 noiseless 4x SR (test) |
| Metric | PSNR |
| Unit | SCALAR |
| Direction | Higher is better |
| Results loaded | 16 of 16 |
| 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](<https://www.sota2.com/research/sota/image-super-resolution-on-imagenet-256x256-noiseless-4x-sr-test.md?metric=PSNR>): Higher is better; unit: SCALAR.

- [LPIPS](<https://www.sota2.com/research/sota/image-super-resolution-on-imagenet-256x256-noiseless-4x-sr-test.md?metric=LPIPS>): Lower is better; unit: SCALAR.

- [FID](<https://www.sota2.com/research/sota/image-super-resolution-on-imagenet-256x256-noiseless-4x-sr-test.md?metric=FID>): Lower is better; unit: SCALAR.

## Recorded results

| Method | PSNR | Result date | Report paper |
| --- | --- | --- | --- |
| OFTSR distilled | 26.18 | Not recorded | 68fa7b241e209131cea86cdf |
| I3SB | 25.24 | Not recorded | 68fa7b241e209131cea86cdf |
| DDNM | 25.19 | Not recorded | 68fa7b241e209131cea86cdf |
| DiffPIR | 24.88 | Not recorded | 68fa7b241e209131cea86cdf |
| OFTSR distilled | 24.85 | Not recorded | 68fa7b241e209131cea86cdf |
| SITCOM | 24.79 | Not recorded | 68fa7b241e209131cea86cdf |
| DDC | 24.67 | Not recorded | 68fa7b241e209131cea86cdf |
| DDRM | 24.55 | Not recorded | 68fa7b241e209131cea86cdf |
| OFTSR distilled | 24.2 | Not recorded | 68fa7b241e209131cea86cdf |
| I3SB | 23.79 | Not recorded | 68fa7b241e209131cea86cdf |
| ResShift | 23.68 | Not recorded | 68fa7b241e209131cea86cdf |
| CDDB | 23.64 | Not recorded | 68fa7b241e209131cea86cdf |
| I2SB | 23.36 | Not recorded | 68fa7b241e209131cea86cdf |
| OFTSR | 23.35 | Not recorded | 68fa7b241e209131cea86cdf |
| SinSR | 22.25 | Not recorded | 68fa7b241e209131cea86cdf |
| DPS | 20.36 | Not recorded | 68fa7b241e209131cea86cdf |

### OFTSR distilled

PSNR: 26.18. Result ID: 69bd145947f34ce924a77892.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

Recorded evaluation configuration: {"Training Category":"Training-based","NFEs":"1","Distillation parameter (t)":"0"}. This record does not assert independent reproduction.

### I3SB

PSNR: 25.24. Result ID: 69bd145947f34ce924a7788b.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa77971e209131cea7434d.md>)

Recorded evaluation configuration: {"Training Category":"Training-based","NFEs":"1"}. This record does not assert independent reproduction.

### DDNM

PSNR: 25.19. Result ID: 69bd145947f34ce924a77885.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6e201e209131cea3dfb9.md>)

[Implementation](<https://github.com/wyhuai/DDNM>)

Recorded evaluation configuration: {"Training Category":"Training-free","NFEs":"100"}. This record does not assert independent reproduction.

### DiffPIR

PSNR: 24.88. Result ID: 69bd145947f34ce924a77886.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6f5a1e209131cea45311.md>)

Recorded evaluation configuration: {"Training Category":"Training-free","NFEs":"100"}. This record does not assert independent reproduction.

### OFTSR distilled

PSNR: 24.85. Result ID: 69bd145947f34ce924a77891.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

Recorded evaluation configuration: {"Training Category":"Training-based","NFEs":"1","Distillation parameter (t)":"0.5"}. This record does not assert independent reproduction.

### SITCOM

PSNR: 24.79. Result ID: 69bd145947f34ce924a77887.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa78db1e209131cea7ad48.md>)

Recorded evaluation configuration: {"Training Category":"Training-free","NFEs":"20"}. This record does not assert independent reproduction.

### DDC

PSNR: 24.67. Result ID: 69bd145947f34ce924a7788c.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa73491e209131cea5b8f0.md>)

Recorded evaluation configuration: {"Training Category":"Training-based","NFEs":"5"}. This record does not assert independent reproduction.

### DDRM

PSNR: 24.55. Result ID: 69bd145947f34ce924a77884.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6d9f1e209131cea3aea8.md>)

[Implementation](<https://github.com/bahjat-kawar/ddrm>)

Recorded evaluation configuration: {"Training Category":"Training-free","NFEs":"20"}. This record does not assert independent reproduction.

### OFTSR distilled

PSNR: 24.2. Result ID: 69bd145947f34ce924a77890.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

Recorded evaluation configuration: {"Training Category":"Training-based","NFEs":"1","Distillation parameter (t)":"1"}. This record does not assert independent reproduction.

### I3SB

PSNR: 23.79. Result ID: 69bd145947f34ce924a7788a.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa77971e209131cea7434d.md>)

Recorded evaluation configuration: {"Training Category":"Training-based","NFEs":"25"}. This record does not assert independent reproduction.

### ResShift

PSNR: 23.68. Result ID: 69bd145947f34ce924a7788d.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa70e51e209131cea4dbe5.md>)

Recorded evaluation configuration: {"Training Category":"Training-based","NFEs":"4"}. This record does not assert independent reproduction.

### CDDB

PSNR: 23.64. Result ID: 69bd145947f34ce924a77888.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa70f11e209131cea4e38f.md>)

Recorded evaluation configuration: {"Training Category":"Training-free","NFEs":"100"}. This record does not assert independent reproduction.

### I2SB

PSNR: 23.36. Result ID: 69bd145947f34ce924a77889.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6f7f1e209131cea45fb5.md>)

Recorded evaluation configuration: {"Training Category":"Training-based","NFEs":"1000"}. This record does not assert independent reproduction.

### OFTSR

PSNR: 23.35. Result ID: 69bd145947f34ce924a7788f.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

Recorded evaluation configuration: {"Training Category":"Training-based","NFEs":"26"}. This record does not assert independent reproduction.

### SinSR

PSNR: 22.25. Result ID: 69bd145947f34ce924a7788e.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa714a1e209131cea5075c.md>)

[Implementation](<https://github.com/wyf0912/SinSR/>)

Recorded evaluation configuration: {"Training Category":"Training-based","NFEs":"1"}. This record does not assert independent reproduction.

### DPS

PSNR: 20.36. Result ID: 69bd145947f34ce924a77883.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7b241e209131cea86cdf.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa7bdd1e209131cea8adbc.md>)

Recorded evaluation configuration: {"Training Category":"Training-free","NFEs":"1000"}. This record does not assert independent reproduction.

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