[CVPR2024] Multi-Task Dense Prediction via Mixture of Low-Rank Experts

Abstract

We provide the code for MLoRE, a new multi-task framework for dense prediction. Our code is implemented on PASCAL-Context and NYUD-v2 based on ViT.

• MLoRE builds a novel decoder module based on MoE(Mixture of Experts) that can capture the global relationship across all tasks.
• To further reduce the computation cost and parameters, MLoRE introduces low-rank linear experts, which can enlarge the capacity of feature representations without increasing the model size too much.
• The design of MLoRE achieves a new state-of-the-art (SOTA) performance with superior efficiency on PASCAL-Context and NYUD-v2.

Please check the paper for more details.

Framework overview of the proposed MLoRE for multi-task scene understanding.

Installation

1. Environment

You can use the following command to prepare your environment.

conda create -n mlore python=3.7
conda activate mlore
pip install tqdm Pillow==9.5 easydict pyyaml imageio scikit-image tensorboard
pip install opencv-python==4.7.0.72 setuptools==59.5.0

pip install torch==1.10.0+cu111 torchvision==0.11.0+cu111 torchaudio==0.10.0 -f https://download.pytorch.org/whl/torch_stable.html
pip install timm==0.5.4 einops==0.4.1

2. Data

You can download the PASCAL-Context and NYUD-v2 from ATRC's repository:

PASCAL-Context

wget https://data.vision.ee.ethz.ch/brdavid/atrc/NYUDv2.tar.gz
tar xfvz PASCALContext.tar.gz

NYUD-v2

wget https://data.vision.ee.ethz.ch/brdavid/atrc/PASCALContext.tar.gz
tar xfvz NYUDv2.tar.gz

Attention: you need to specify the root directory of your own datasets as db_root variable in configs/mypath.py.

3. Training

You can train your own model by using the following commands. PASCAL-Context:

bash run_MLoRE_pascal.sh

NYUD-v2

bash run_MLoRE_nyud.sh

If you want to train your model based on ViT-Base, you can modify the --config_exp in .sh file.

You can also modify the output directory in ./configs.

4. Evaluate the model

The training script itself includes evaluation. For inferring with pre-trained models, you can use the following commands. PASCAL-Context:

bash infer_MLoRE_pascal.sh

NYUD-v2

bash infer_MLoRE_nyud.sh

For the evaluation of boundary, you can use the evaluation tools in this repo following TaskPrompter.

Pre-trained models

We provide the pretrained classification models on PASCAL-Context and NYUD-v2.

Download pre-trained models

Version	Dataset	Download	Depth (RMSE)	Segmentation (mIoU)	Human parsing (mIoU)	Saliency (maxF)	Normals (mErr)	Boundary (odsF)
MLoRE (ViT-L)	PASCAL-Context	Google	-	81.41	70.52	84.90	13.51	75.42
MLoRE (ViT-B)	PASCAL-Context	Google	-	79.26	67.82	85.31	13.65	74.69
MLoRE (ViT-L)	NYUD-v2	Google	0.5076	55.96	-	-	18.33	78.43

Infer with the pre-trained models

To evaluate the pre-trained models, you can change the --trained_model MODEL_PATH in infer.sh to load the specified model.

Cite

If you find our work helpful, please cite: BibTex:

@inproceedings{jiang2024mlore,
  title={Multi-Task Dense Prediction via Mixture of Low-Rank Experts},
  author={Yang, Yuqi and Jiang, Peng-Tao and Hou, Qibin and Zhang, Hao and Chen, Jinwei and Li, Bo},
  booktitle={Proceedings of the IEEE/CVF conference on computer vision and pattern recognition},
  year={2024}
}

Contact

If you have any questions, please feel free to contact Me(yangyq2000 AT mail DOT nankai DOT edu DOT cn).

Acknowledgement

This repository is built upon the nice framework provided by TaskPrompter and InvPT.