rtmlib

rtmlib is a super lightweight library to conduct pose estimation based on RTMPose models WITHOUT any dependencies like mmcv, mmpose, mmdet, etc.

Basically, rtmlib only requires these dependencies:

• numpy
• opencv-python
• opencv-contrib-python
• onnxruntime

Optionally, you can use other common backends like opencv, onnxruntime, openvino, tensorrt to accelerate the inference process.

• For openvino users, please add the path <your python path>\envs\<your env name>\Lib\site-packages\openvino\libs into your environment path.

Installation

• install from pypi:

pip install rtmlib -i https://pypi.org/simple

• install from source code:

git clone https://github.com/Tau-J/rtmlib.git
cd rtmlib

pip install -r requirements.txt

pip install -e .

# [optional]
# pip install onnxruntime-gpu
# pip install openvino

Quick Start

Here is a simple demo to show how to use rtmlib to conduct pose estimation on a single image.

import cv2

from rtmlib import Wholebody, draw_skeleton

device = 'cpu'  # cpu, cuda
backend = 'onnxruntime'  # opencv, onnxruntime, openvino
img = cv2.imread('./demo.jpg')

openpose_skeleton = False  # True for openpose-style, False for mmpose-style

wholebody = Wholebody(to_openpose=openpose_skeleton,
                      mode='balanced',  # 'performance', 'lightweight', 'balanced'. Default: 'balanced'
                      backend=backend, device=device)

keypoints, scores = wholebody(img)

# visualize

# if you want to use black background instead of original image,
# img_show = np.zeros(img_show.shape, dtype=np.uint8)

img_show = draw_skeleton(img_show, keypoints, scores, kpt_thr=0.5)


cv2.imshow('img', img_show)
cv2.waitKey()

WebUI

Run webui.py:

# Please make sure you have installed gradio
# pip install gradio

python webui.py

APIs

• Solutions (High-level APIs)
  • Wholebody
  • Body
  • Hand
  • PoseTracker
• Models (Low-level APIs)
  • YOLOX
  • RTMDet
  • RTMPose
    • RTMPose for 17 keypoints
    • RTMW for 133 keypoints
    • DWPose for 133 keypoints
    • RTMO for one-stage pose estimation (17 keypoints)
• Visualization
  • draw_bbox
  • draw_skeleton

For high-level APIs (Solution), you can choose to pass mode or det+pose arguments to specify the detector and pose estimator you want to use.

# By mode
wholebody = Wholebody(mode='performance',  # 'performance', 'lightweight', 'balanced'. Default: 'balanced'
                      backend=backend,
                      device=device)

# By det and pose
body = Body(det='https://download.openmmlab.com/mmpose/v1/projects/rtmposev1/onnx_sdk/yolox_x_8xb8-300e_humanart-a39d44ed.zip',
            det_input_size=(640, 640),
            pose='https://download.openmmlab.com/mmpose/v1/projects/rtmposev1/onnx_sdk/rtmpose-x_simcc-body7_pt-body7_700e-384x288-71d7b7e9_20230629.zip',
            pose_input_size=(288, 384),
            backend=backend,
            device=device)

For low-level APIs (Model), you can specify the model you want to use by passing the onnx_model argument.

# By onnx_model (.onnx)
pose_model = RTMPose(onnx_model='/path/to/your_model.onnx',  # download link or local path
                     backend=backend, device=device)

# By onnx_model (.zip)
pose_model = RTMPose(onnx_model='https://download.openmmlab.com/mmpose/v1/projects/rtmposev1/onnx_sdk/rtmpose-m_simcc-body7_pt-body7_420e-256x192-e48f03d0_20230504.zip',  # download link or local path
                     backend=backend, device=device)

Model Zoo

By defaults, rtmlib will automatically download and apply models with the best performance.

More models can be found in RTMPose Model Zoo.

Detectors

Person

Notes:

• Models trained on HumanArt can detect both real human and cartoon characters.
• Models trained on COCO can only detect real human.

ONNX Model	Input Size	AP (person)	Description
YOLOX-l	640x640	-	trained on COCO
YOLOX-nano	416x416	38.9	trained on HumanArt+COCO
YOLOX-tiny	416x416	47.7	trained on HumanArt+COCO
YOLOX-s	640x640	54.6	trained on HumanArt+COCO
YOLOX-m	640x640	59.1	trained on HumanArt+COCO
YOLOX-l	640x640	60.2	trained on HumanArt+COCO
YOLOX-x	640x640	61.3	trained on HumanArt+COCO

Pose Estimators

Body 17 Keypoints

ONNX Model	Input Size	AP (COCO)	Description
RTMPose-t	256x192	65.9	trained on 7 datasets
RTMPose-s	256x192	69.7	trained on 7 datasets
RTMPose-m	256x192	74.9	trained on 7 datasets
RTMPose-l	256x192	76.7	trained on 7 datasets
RTMPose-l	384x288	78.3	trained on 7 datasets
RTMPose-x	384x288	78.8	trained on 7 datasets
RTMO-s	640x640	68.6	trained on 7 datasets
RTMO-m	640x640	72.6	trained on 7 datasets
RTMO-l	640x640	74.8	trained on 7 datasets

WholeBody 133 Keypoints

ONNX Model	Input Size		Description
DWPose-t	256x192	48.5	trained on COCO-Wholebody+UBody
DWPose-s	256x192	53.8	trained on COCO-Wholebody+UBody
DWPose-m	256x192	60.6	trained on COCO-Wholebody+UBody
DWPose-l	256x192	63.1	trained on COCO-Wholebody+UBody
DWPose-l	384x288	66.5	trained on COCO-Wholebody+UBody
RTMW-m	256x192	58.2	trained on 14 datasets
RTMW-l	256x192	66.0	trained on 14 datasets
RTMW-l	384x288	70.1	trained on 14 datasets
RTMW-x	384x288	70.2	trained on 14 datasets

Visualization

MMPose-style	OpenPose-style

Citation

@misc{rtmlib,
  title={rtmlib},
  author={Jiang, Tao},
  year={2023},
  howpublished = {\url{https://github.com/Tau-J/rtmlib}},
}

@misc{jiang2023,
  doi = {10.48550/ARXIV.2303.07399},
  url = {https://arxiv.org/abs/2303.07399},
  author = {Jiang, Tao and Lu, Peng and Zhang, Li and Ma, Ningsheng and Han, Rui and Lyu, Chengqi and Li, Yining and Chen, Kai},
  keywords = {Computer Vision and Pattern Recognition (cs.CV), FOS: Computer and information sciences, FOS: Computer and information sciences},
  title = {RTMPose: Real-Time Multi-Person Pose Estimation based on MMPose},
  publisher = {arXiv},
  year = {2023},
  copyright = {Creative Commons Attribution 4.0 International}
}

@misc{lu2023rtmo,
      title={{RTMO}: Towards High-Performance One-Stage Real-Time Multi-Person Pose Estimation},
      author={Peng Lu and Tao Jiang and Yining Li and Xiangtai Li and Kai Chen and Wenming Yang},
      year={2023},
      eprint={2312.07526},
      archivePrefix={arXiv},
      primaryClass={cs.CV}
}

Acknowledgement

Our code is based on these repos:

• MMPose
• RTMPose
• DWPose