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# Image Segmentation Using Text and Image Prompts
This repository contains the code used in the paper ["Image Segmentation Using Text and Image Prompts"](https://arxiv.org/abs/2112.10003).
**The Paper has been accepted to CVPR 2022!**
<img src="overview.png" alt="drawing" height="200em"/>
The systems allows to create segmentation models without training based on:
- An arbitrary text query
- Or an image with a mask highlighting stuff or an object.
### Quick Start
In the `Quickstart.ipynb` notebook we provide the code for using a pre-trained CLIPSeg model. If you run the notebook locally, make sure you downloaded the `rd64-uni.pth` weights, either manually or via git lfs extension.
It can also be used interactively using [MyBinder](https://mybinder.org/v2/gh/timojl/clipseg/HEAD?labpath=Quickstart.ipynb)
(please note that the VM does not use a GPU, thus inference takes a few seconds).
### Dependencies
This code base depends on pytorch, torchvision and clip (`pip install git+https://github.com/openai/CLIP.git`).
Additional dependencies are hidden for double blind review.
### Datasets
* `PhraseCut` and `PhraseCutPlus`: Referring expression dataset
* `PFEPascalWrapper`: Wrapper class for PFENet's Pascal-5i implementation
* `PascalZeroShot`: Wrapper class for PascalZeroShot
* `COCOWrapper`: Wrapper class for COCO.
### Models
* `CLIPDensePredT`: CLIPSeg model with transformer-based decoder.
* `ViTDensePredT`: CLIPSeg model with transformer-based decoder.
### Third Party Dependencies
For some of the datasets third party dependencies are required. Run the following commands in the `third_party` folder.
```bash
git clone https://github.com/cvlab-yonsei/JoEm
git clone https://github.com/Jia-Research-Lab/PFENet.git
git clone https://github.com/ChenyunWu/PhraseCutDataset.git
git clone https://github.com/juhongm999/hsnet.git
```
### Weights
The MIT license does not apply to these weights.
We provide two model weights, for D=64 (4.1MB) and D=16 (1.1MB).
```
wget https://owncloud.gwdg.de/index.php/s/ioHbRzFx6th32hn/download -O weights.zip
unzip -d weights -j weights.zip
```
### Training and Evaluation
To train use the `training.py` script with experiment file and experiment id parameters. E.g. `python training.py phrasecut.yaml 0` will train the first phrasecut experiment which is defined by the `configuration` and first `individual_configurations` parameters. Model weights will be written in `logs/`.
For evaluation use `score.py`. E.g. `python score.py phrasecut.yaml 0 0` will train the first phrasecut experiment of `test_configuration` and the first configuration in `individual_configurations`.
### Usage of PFENet Wrappers
In order to use the dataset and model wrappers for PFENet, the PFENet repository needs to be cloned to the root folder.
`git clone https://github.com/Jia-Research-Lab/PFENet.git `
### License
The source code files in this repository (excluding model weights) are released under MIT license.
### Citation
```
@InProceedings{lueddecke22_cvpr,
author = {L\"uddecke, Timo and Ecker, Alexander},
title = {Image Segmentation Using Text and Image Prompts},
booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)},
month = {June},
year = {2022},
pages = {7086-7096}
}
```