# Image Colorization on ImageNet and Places ILSVRC2012 (val)

Source: [Image Colorization on ImageNet and Places ILSVRC2012 (val)](<https://www.sota2.com/research/sota/image-colorization-on-imagenet-and-places-ilsvrc2012-val>)

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

Data updated: 2026-02-26T05:53:34.394Z

Evaluation of Image Colorization performance on the validation split of the ImageNet and Places ILSVRC2012 dataset, measured using Naturalness scores.

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 Colorization |
| Dataset (including any stated split) | ImageNet and Places ILSVRC2012 (val) |
| Metric | Naturalness Score |
| Unit | PERCENT |
| 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

- [Naturalness Score](<https://www.sota2.com/research/sota/image-colorization-on-imagenet-and-places-ilsvrc2012-val.md?metric=Naturalness%20Score>): Higher is better; unit: PERCENT.

## Recorded results

| Method | Naturalness Score | Result date | Report paper |
| --- | --- | --- | --- |
| Real images | 87.1 | Not recorded | 68fa66ee1e209131cea13572 |
| ChromaGAN | 76.9 | Not recorded | 68fa66ee1e209131cea13572 |
| ChromaGAN w/o Class | 70.9 | Not recorded | 68fa66ee1e209131cea13572 |
| ChromaNet | 61.4 | Not recorded | 68fa66ee1e209131cea13572 |
| Iizuka et al. | 53.9 | Not recorded | 68fa66ee1e209131cea13572 |
| Larsson et al. | 53.6 | Not recorded | 68fa66ee1e209131cea13572 |
| Zhang et al. | 52.2 | Not recorded | 68fa66ee1e209131cea13572 |
| Isola et al. | 27.6 | Not recorded | 68fa66ee1e209131cea13572 |

### Real images

Naturalness Score: 87.1. Result ID: 698d11ba8b517eb4331ec347.

[Reporting paper](<https://www.sota2.com/research/paper/68fa66ee1e209131cea13572.md>)

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

### ChromaGAN

Naturalness Score: 76.9. Result ID: 698d11ba8b517eb4331ec348.

[Reporting paper](<https://www.sota2.com/research/paper/68fa66ee1e209131cea13572.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa66ee1e209131cea13572.md>)

Recorded evaluation configuration: {"Adversarial Training":true,"Semantic Class":true}. This record does not assert independent reproduction.

### ChromaGAN w/o Class

Naturalness Score: 70.9. Result ID: 698d11ba8b517eb4331ec349.

[Reporting paper](<https://www.sota2.com/research/paper/68fa66ee1e209131cea13572.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa66ee1e209131cea13572.md>)

Recorded evaluation configuration: {"Adversarial Training":true,"Semantic Class":false}. This record does not assert independent reproduction.

### ChromaNet

Naturalness Score: 61.4. Result ID: 698d11ba8b517eb4331ec34a.

[Reporting paper](<https://www.sota2.com/research/paper/68fa66ee1e209131cea13572.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa66ee1e209131cea13572.md>)

Recorded evaluation configuration: {"Adversarial Training":false,"Semantic Class":true}. This record does not assert independent reproduction.

### Iizuka et al.

Naturalness Score: 53.9. Result ID: 698d11ba8b517eb4331ec34b.

[Reporting paper](<https://www.sota2.com/research/paper/68fa66ee1e209131cea13572.md>)

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

### Larsson et al.

Naturalness Score: 53.6. Result ID: 698d11ba8b517eb4331ec34c.

[Reporting paper](<https://www.sota2.com/research/paper/68fa66ee1e209131cea13572.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa63881e209131ce9ff4ff.md>)

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

### Zhang et al.

Naturalness Score: 52.2. Result ID: 698d11ba8b517eb4331ec34d.

[Reporting paper](<https://www.sota2.com/research/paper/68fa66ee1e209131cea13572.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa62d41e209131ce9fb63e.md>)

[Implementation](<http://richzhang.github.io/colorization/>)

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

### Isola et al.

Naturalness Score: 27.6. Result ID: 698d11ba8b517eb4331ec34e.

[Reporting paper](<https://www.sota2.com/research/paper/68fa66ee1e209131cea13572.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa65151e209131cea0821e.md>)

[Implementation](<https://github.com/phillipi/pix2pix>)

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

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