SegFormer (b5-sized) model fine-tuned on CityScapes

SegFormer model fine-tuned on CityScapes at resolution 1024x1024. It was introduced in the paper SegFormer: Simple and Efficient Design for Semantic Segmentation with Transformers by Xie et al. and first released in this repository.

Disclaimer: The team releasing SegFormer did not write a model card for this model so this model card has been written by the Hugging Face team.

Model description

SegFormer consists of a hierarchical Transformer encoder and a lightweight all-MLP decode head to achieve great results on semantic segmentation benchmarks such as ADE20K and Cityscapes. The hierarchical Transformer is first pre-trained on ImageNet-1k, after which a decode head is added and fine-tuned altogether on a downstream dataset.

Intended uses & limitations

You can use the raw model for semantic segmentation. See the model hub to look for fine-tuned versions on a task that interests you.

How to use

Here is how to use this model to classify an image of the COCO 2017 dataset into one of the 1,000 ImageNet classes:

from transformers import SegformerFeatureExtractor, SegformerForSemanticSegmentation
from PIL import Image
import requests

feature_extractor = SegformerFeatureExtractor.from_pretrained("nvidia/segformer-b5-finetuned-cityscapes-1024-1024")
model = SegformerForSemanticSegmentation.from_pretrained("nvidia/segformer-b5-finetuned-cityscapes-1024-1024")

url = "http://images.cocodataset.org/val2017/000000039769.jpg"
image = Image.open(requests.get(url, stream=True).raw)

inputs = feature_extractor(images=image, return_tensors="pt")
outputs = model(**inputs)
logits = outputs.logits # shape (batch_size, num_labels, height/4, width/4)

For more code examples, we refer to the documentation.

License

The license for this model can be found here.

BibTeX entry and citation info

@article{DBLP:journals/corr/abs-2105-15203,
 author = {Enze Xie and
 Wenhai Wang and
 Zhiding Yu and
 Anima Anandkumar and
 Jose M. Alvarez and
 Ping Luo},
 title = {SegFormer: Simple and Efficient Design for Semantic Segmentation with
 Transformers},
 journal = {CoRR},
 volume = {abs/2105.15203},
 year = {2021},
 url = {https://arxiv.org/abs/2105.15203},
 eprinttype = {arXiv},
 eprint = {2105.15203},
 timestamp = {Wed, 02 Jun 2021 11:46:42 +0200},
 biburl = {https://dblp.org/rec/journals/corr/abs-2105-15203.bib},
 bibsource = {dblp computer science bibliography, https://dblp.org}
}