---
tags:
- monai
---

# Model Overview
VISTA3D is trained using over 20 partial datasets with more complicated processing. This model is a hugging face refactored version of the [MONAI VISTA3D](https://github.com/Project-MONAI/model-zoo/tree/dev/models/vista3d) bundle. A pipeline with transformer library interfaces is provided by this model. For more details about the original model, please visit the [MONAI model zoo](https://github.com/Project-MONAI/model-zoo).

## Run pipeline:
For running the pipeline, VISTA3d requires at least one prompt for segmentation. It supports label prompt, which is the index of the class for automatic segmentation. It also supports point-click prompts for binary interactive segmentation. Users can provide both prompts at the same time.

Here is a code snippet to showcase how to execute inference with this model.
```python
import os
import tempfile

import torch
from hugging_face_pipeline import HuggingFacePipelineHelper


FILE_PATH = os.path.dirname(__file__)
with tempfile.TemporaryDirectory() as tmp_dir:
    output_dir = os.path.join(tmp_dir, "output_dir")
    pipeline_helper = HuggingFacePipelineHelper("vista3d")
    pipeline = pipeline_helper.init_pipeline(
        os.path.join(FILE_PATH, "vista3d_pretrained_model"),
        device=torch.device("cuda:0"),
    )
    inputs = [
        {
            "image": "/data/Task09_Spleen/imagesTs/spleen_1.nii.gz",
            "label_prompt": [3],
        },
        {
            "image": "/data/Task09_Spleen/imagesTs/spleen_11.nii.gz",
            "label_prompt": [3],
        },
    ]
    pipeline(inputs, output_dir=output_dir)

```
The inputs defines the image to segment and the prompt for segmentation.
```python 
inputs = {'image': '/data/Task09_Spleen/imagesTs/spleen_15.nii.gz', 'label_prompt':[1]}
inputs =  {'image': '/data/Task09_Spleen/imagesTs/spleen_15.nii.gz', 'points':[[138,245,18], [271,343,27]], 'point_labels':[1,0]}
```
- The inputs must include the key `image` which contain the absolute path to the nii image file, and includes prompt keys of `label_prompt`, `points` and `point_labels`.
- The `label_prompt` is a list of length `B`, which can perform `B` foreground objects segmentation, e.g. `[2,3,4,5]`. If `B>1`, Point prompts must NOT be provided.
- The `points` is of shape `[N, 3]` like `[[x1,y1,z1],[x2,y2,z2],...[xN,yN,zN]]`, representing `N` point coordinates **IN THE ORIGINAL IMAGE SPACE** of a single foreground object. `point_labels` is a list of length [N] like [1,1,0,-1,...], which
matches the `points`. 0 means background, 1 means foreground, -1 means ignoring this point. `points` and `point_labels` must pe provided together and match length.
- **B must be 1 if label_prompt and points are provided together**. The inferer only supports SINGLE OBJECT point click segmentatation.
- If no prompt is provided, the model will use `everything_labels` to segment 117 classes:

```Python
list(set([i+1 for i in range(132)]) - set([2,16,18,20,21,23,24,25,26,27,128,129,130,131,132]))
```

- The `points` together with `label_prompts` for "Kidney", "Lung", "Bone" (class index [2, 20, 21]) are not allowed since those prompts will be divided into sub-categories (e.g. left kidney and right kidney). Use `points` for the sub-categories as defined in the `inference.json`.
- To specify a new class for zero-shot segmentation, set the `label_prompt` to a value between 133 and 254. Ensure that `points` and `point_labels` are also provided; otherwise, the inference result will be a tensor of zeros.

# References
- Antonelli, M., Reinke, A., Bakas, S. et al. The Medical Segmentation Decathlon. Nat Commun 13, 4128 (2022). https://doi.org/10.1038/s41467-022-30695-9

- VISTA3D: Versatile Imaging SegmenTation and Annotation model for 3D Computed Tomography. arxiv (2024) https://arxiv.org/abs/2406.05285


# License

## Code License

This project includes code licensed under the Apache License 2.0.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

## Model Weights License

The model weights included in this project are licensed under the NCLS v1 License.

Both licenses' full texts have been combined into a single `LICENSE` file. Please refer to this `LICENSE` file for more details about the terms and conditions of both licenses.