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Getting Started

Installation

Please refer to install.md for installation.

Data Preparation

Please refer to data_preparation.md for data preparation.

Body Model Preparation

Download the above resources and arrange them in the following file structure:

mmhuman3d
├── mmhuman3d
├── docs
├── tests
├── tools
├── configs
└── data
    └── body_models
        ├── J_regressor_extra.npy
        ├── J_regressor_h36m.npy
        ├── smpl_mean_params.npz
        └── smpl
            ├── SMPL_FEMALE.pkl
            ├── SMPL_MALE.pkl
            └── SMPL_NEUTRAL.pkl

Inference / Demo

Offline Demo

We provide a demo script to estimate SMPL parameters for single-person or multi-person from the input image or video with the bounding box detected by MMDetection or MMTracking. With this demo script, you only need to choose a pre-trained model (we currently only support HMR, SPIN, VIBE and PARE, more SOTA methods will be added in the future) from our model zoo and specify a few arguments, and then you can get the estimated results.

Some useful configs are explained here:

  • If you specify --output and --show_path, the demo script will save the estimated results into human_data and render the estimated human mesh.
  • If you specify --smooth_type, the demo will be smoothed using specific method. We now support filters gaus1d,oneeuro, savgol and learning-based method smoothnet, more information can be find here.
  • If you specify --speed_up_type, the demo will be processed more quickly using specific method. We now support learning-based method deciwatch, more information can be find here.

For single-person:

python demo/estimate_smpl.py \
    ${MMHUMAN3D_CONFIG_FILE} \
    ${MMHUMAN3D_CHECKPOINT_FILE} \
    --single_person_demo \
    --det_config ${MMDET_CONFIG_FILE} \
    --det_checkpoint ${MMDET_CHECKPOINT_FILE} \
    --input_path ${VIDEO_PATH_OR_IMG_PATH} \
    [--show_path ${VIS_OUT_PATH}] \
    [--output ${RESULT_OUT_PATH}] \
    [--smooth_type ${SMOOTH_TYPE}] \
    [--speed_up_type ${SPEED_UP_TYPE}] \
    [--draw_bbox] \

Example:

python demo/estimate_smpl.py \
    configs/hmr/resnet50_hmr_pw3d.py \
    data/checkpoints/resnet50_hmr_pw3d.pth \
    --single_person_demo \
    --det_config demo/mmdetection_cfg/faster_rcnn_r50_fpn_coco.py \
    --det_checkpoint https://download.openmmlab.com/mmdetection/v2.0/faster_rcnn/faster_rcnn_r50_fpn_1x_coco/faster_rcnn_r50_fpn_1x_coco_20200130-047c8118.pth \
    --input_path  demo/resources/single_person_demo.mp4 \
    --show_path vis_results/single_person_demo.mp4 \
    --output demo_result \
    --smooth_type savgol \
    --speed_up_type deciwatch \
    --draw_bbox

For multi-person:

python demo/estimate_smpl.py \
    ${MMHUMAN3D_CONFIG_FILE} \
    ${MMHUMAN3D_CHECKPOINT_FILE} \
    --multi_person_demo \
    --tracking_config ${MMTRACKING_CONFIG_FILE} \
    --input_path ${VIDEO_PATH_OR_IMG_PATH} \
    [--show_path ${VIS_OUT_PATH}] \
    [--output ${RESULT_OUT_PATH}] \
    [--smooth_type ${SMOOTH_TYPE}] \
    [--speed_up_type ${SPEED_UP_TYPE}] \
    [--draw_bbox]

Example:

python demo/estimate_smpl.py \
    configs/hmr/resnet50_hmr_pw3d.py \
    data/checkpoints/resnet50_hmr_pw3d.pth \
    --multi_person_demo \
    --tracking_config demo/mmtracking_cfg/deepsort_faster-rcnn_fpn_4e_mot17-private-half.py \
    --input_path  demo/resources/multi_person_demo.mp4 \
    --show_path vis_results/multi_person_demo.mp4 \
    --smooth_type savgol \
    --speed_up_type deciwatch \
    [--draw_bbox]

Note that the MMHuman3D checkpoints can be downloaded from the model zoo. Here we take HMR (resnet50_hmr_pw3d.pth) as an example.

Online Demo

We provide a webcam demo script to estimate SMPL parameters from the camera or a specified video file. You can simply run the following command:

python demo/webcam_demo.py

Some useful arguments are explained here:

  • If you specify --output, the webcam demo script will save the visualization results into a file. This may reduce the frame rate.

  • If you specify --synchronous, video I/O and inference will be temporally aligned. Note that this will reduce the frame rate.

  • If you want run the webcam demo in offline mode on a video file, you should set --cam-id=VIDEO_FILE_PATH. Note that --synchronous should be set to True in this case.

  • The video I/O and model inference are running asynchronously and the latter usually takes more time for a single frame. To allevidate the time delay, you can:

    • set --display-delay=MILLISECONDS to defer the video stream, according to the inference delay shown at the top left corner. Or,

    • set --synchronous=True to force video stream being aligned with inference results. This may reduce the frame rate.

Evaluation

We provide pretrained models in the respective method folders in config.

Evaluate with a single GPU / multiple GPUs

python tools/test.py ${CONFIG} --work-dir=${WORK_DIR} ${CHECKPOINT} --metrics=${METRICS}

Example:

python tools/test.py configs/hmr/resnet50_hmr_pw3d.py --work-dir=work_dirs/hmr work_dirs/hmr/latest.pth --metrics pa-mpjpe mpjpe

Evaluate with slurm

If you can run MMHuman3D on a cluster managed with slurm, you can use the script slurm_test.sh.

./tools/slurm_test.sh ${PARTITION} ${JOB_NAME} ${CONFIG} ${WORK_DIR} ${CHECKPOINT} --metrics ${METRICS}

Example:

./tools/slurm_test.sh my_partition test_hmr configs/hmr/resnet50_hmr_pw3d.py work_dirs/hmr work_dirs/hmr/latest.pth 8 --metrics pa-mpjpe mpjpe

Training

Training with a single / multiple GPUs

python tools/train.py ${CONFIG_FILE} ${WORK_DIR} --no-validate

Example: using 1 GPU to train HMR.

python tools/train.py ${CONFIG_FILE} ${WORK_DIR} --gpus 1 --no-validate

Training with Slurm

If you can run MMHuman3D on a cluster managed with slurm, you can use the script slurm_train.sh.

./tools/slurm_train.sh ${PARTITION} ${JOB_NAME} ${CONFIG_FILE} ${WORK_DIR} ${GPU_NUM} --no-validate

Common optional arguments include:

  • --resume-from ${CHECKPOINT_FILE}: Resume from a previous checkpoint file.
  • --no-validate: Whether not to evaluate the checkpoint during training.

Example: using 8 GPUs to train HMR on a slurm cluster.

./tools/slurm_train.sh my_partition my_job configs/hmr/resnet50_hmr_pw3d.py work_dirs/hmr 8 --no-validate

You can check slurm_train.sh for full arguments and environment variables.

More Tutorials