README.md

---
library_name: transformers
tags:
- depth
- absolute depth
pipeline_tag: depth-estimation
---

# Depth Anything V2 (Fine-tuned for Metric Depth Estimation) - Transformers Version

This model represents a fine-tuned version of [Depth Anything V2](https://huggingface.co/depth-anything/Depth-Anything-V2-Large-hf) for outdoor metric depth estimation using the synthetic Virtual KITTI datasets.

The model checkpoint is compatible with the transformers library.

Depth Anything V2 was introduced in [the paper of the same name](https://arxiv.org/abs/2406.09414) by Lihe Yang et al. It uses the same architecture as the original Depth Anything release but employs synthetic data and a larger capacity teacher model to achieve much finer and robust depth predictions. This fine-tuned version for metric depth estimation was first released in [this repository](https://github.com/DepthAnything/Depth-Anything-V2).

**Six metric depth models** of three scales for indoor and outdoor scenes, respectively, were released and are available:

| Base Model | Params | Indoor (Hypersim) | Outdoor (Virtual KITTI 2) |
|:-|-:|:-:|:-:|
| Depth-Anything-V2-Small | 24.8M | [Model Card](https://huggingface.co/depth-anything/Depth-Anything-V2-Metric-Indoor-Small-hf) | [Model Card](https://huggingface.co/depth-anything/Depth-Anything-V2-Metric-Outdoor-Small-hf) |
| Depth-Anything-V2-Base | 97.5M | [Model Card](https://huggingface.co/depth-anything/Depth-Anything-V2-Metric-Indoor-Base-hf) | [Model Card](https://huggingface.co/depth-anything/Depth-Anything-V2-Metric-Outdoor-Base-hf) |
| Depth-Anything-V2-Large | 335.3M | [Model Card](https://huggingface.co/depth-anything/Depth-Anything-V2-Metric-Indoor-Large-hf) | [Model Card](https://huggingface.co/depth-anything/Depth-Anything-V2-Metric-Outdoor-Large-hf) |

## Model description

Depth Anything V2 leverages the [DPT](https://huggingface.co/docs/transformers/model_doc/dpt) architecture with a [DINOv2](https://huggingface.co/docs/transformers/model_doc/dinov2) backbone.

The model is trained on ~600K synthetic labeled images and ~62 million real unlabeled images, obtaining state-of-the-art results for both relative and absolute depth estimation.

<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/model_doc/depth_anything_overview.jpg"
alt="drawing" width="600"/>

<small> Depth Anything overview. Taken from the <a href="https://arxiv.org/abs/2401.10891">original paper</a>.</small>

## Intended uses & limitations

You can use the raw model for tasks like zero-shot depth estimation. See the [model hub](https://huggingface.co/models?search=depth-anything) to look for
other versions on a task that interests you.

### Requirements

`transformers>=4.45.0` 

Alternatively, use `transformers` latest version installed from the source:

```
pip install git+https://github.com/huggingface/transformers
```

### How to use

Here is how to use this model to perform zero-shot depth estimation:

```python
from transformers import pipeline
from PIL import Image
import requests

# load pipe
pipe = pipeline(task="depth-estimation", model="depth-anything/Depth-Anything-V2-Metric-Outdoor-Base-hf")

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

# inference
depth = pipe(image)["depth"]
```

Alternatively, you can use the model and processor classes:

```python
from transformers import AutoImageProcessor, AutoModelForDepthEstimation
import torch
import numpy as np
from PIL import Image
import requests

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

image_processor = AutoImageProcessor.from_pretrained("depth-anything/Depth-Anything-V2-Metric-Outdoor-Base-hf")
model = AutoModelForDepthEstimation.from_pretrained("depth-anything/Depth-Anything-V2-Metric-Outdoor-Base-hf")

# prepare image for the model
inputs = image_processor(images=image, return_tensors="pt")

with torch.no_grad():
    outputs = model(**inputs)
    predicted_depth = outputs.predicted_depth

# interpolate to original size
prediction = torch.nn.functional.interpolate(
    predicted_depth.unsqueeze(1),
    size=image.size[::-1],
    mode="bicubic",
    align_corners=False,
)
```

For more code examples, please refer to the [documentation](https://huggingface.co/transformers/main/model_doc/depth_anything.html#).

## Citation

```bibtex
@article{depth_anything_v2,
  title={Depth Anything V2},
  author={Yang, Lihe and Kang, Bingyi and Huang, Zilong and Zhao, Zhen and Xu, Xiaogang and Feng, Jiashi and Zhao, Hengshuang},
  journal={arXiv:2406.09414},
  year={2024}
}

@inproceedings{depth_anything_v1,
  title={Depth Anything: Unleashing the Power of Large-Scale Unlabeled Data}, 
  author={Yang, Lihe and Kang, Bingyi and Huang, Zilong and Xu, Xiaogang and Feng, Jiashi and Zhao, Hengshuang},
  booktitle={CVPR},
  year={2024}
}
```