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# Convolutional Reconstruction Model
Official implementation for *CRM: Single Image to 3D Textured Mesh with Convolutional Reconstruction Model*.
**CRM is a feed-forward model which can generate 3D textured mesh in 10 seconds.**
## [Project Page](https://ml.cs.tsinghua.edu.cn/~zhengyi/CRM/) | [Arxiv](https://arxiv.org/abs/2403.05034) | [HF-Demo](https://huggingface.co/spaces/Zhengyi/CRM) | [Weights](https://huggingface.co/Zhengyi/CRM)
https://github.com/thu-ml/CRM/assets/40787266/8b325bc0-aa74-4c26-92e8-a8f0c1079382
## Try CRM 🍻
* Try CRM at [Huggingface Demo](https://huggingface.co/spaces/Zhengyi/CRM).
* Try CRM at [Replicate Demo](https://replicate.com/camenduru/crm). Thanks [@camenduru](https://github.com/camenduru)!
## Install
### Step 1 - Base
Install package one by one, we use **python 3.9**
```bash
pip install torch==1.13.0+cu117 torchvision==0.14.0+cu117 torchaudio==0.13.0 --extra-index-url https://download.pytorch.org/whl/cu117
pip install torch-scatter==2.1.1 -f https://data.pyg.org/whl/torch-1.13.1+cu117.html
pip install kaolin==0.14.0 -f https://nvidia-kaolin.s3.us-east-2.amazonaws.com/torch-1.13.1_cu117.html
pip install -r requirements.txt
```
besides, one by one need to install xformers manually according to the official [doc](https://github.com/facebookresearch/xformers?tab=readme-ov-file#installing-xformers) (**conda no need**), e.g.
```bash
pip install ninja
pip install -v -U git+https://github.com/facebookresearch/xformers.git@main#egg=xformers
```
### Step 2 - Nvdiffrast
Install nvdiffrast according to the official [doc](https://nvlabs.github.io/nvdiffrast/#installation), e.g.
```bash
pip install git+https://github.com/NVlabs/nvdiffrast
```
## Inference
We suggest gradio for a visualized inference.
```
gradio app.py
```
For inference in command lines, simply run
```bash
CUDA_VISIBLE_DEVICES="0" python run.py --inputdir "examples/kunkun.webp"
```
It will output the preprocessed image, generated 6-view images and CCMs and a 3D model in obj format.
**Tips:** (1) If the result is unsatisfatory, please check whether the input image is correctly pre-processed into a grey background. Otherwise the results will be unpredictable.
(2) Different from the [Huggingface Demo](https://huggingface.co/spaces/Zhengyi/CRM), this official implementation uses UV texture instead of vertex color. It has better texture than the online demo but longer generating time owing to the UV texturing.
## Todo List
- [x] Release inference code.
- [x] Release pretrained models.
- [ ] Optimize inference code to fit in low memery GPU.
- [ ] Upload training code.
## Acknowledgement
- [ImageDream](https://github.com/bytedance/ImageDream)
- [nvdiffrast](https://github.com/NVlabs/nvdiffrast)
- [kiuikit](https://github.com/ashawkey/kiuikit)
- [GET3D](https://github.com/nv-tlabs/GET3D)
## Citation
```
@article{wang2024crm,
title={CRM: Single Image to 3D Textured Mesh with Convolutional Reconstruction Model},
author={Zhengyi Wang and Yikai Wang and Yifei Chen and Chendong Xiang and Shuo Chen and Dajiang Yu and Chongxuan Li and Hang Su and Jun Zhu},
journal={arXiv preprint arXiv:2403.05034},
year={2024}
}
```
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