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Data preparation

Besides the demo code, we also provide training and evaluation code for our approach. To use this functionality, you need to download the relevant datasets. The datasets that our code supports are:

  1. Human3.6M
  2. 3DPW
  3. MPI-INF-3DHP
  4. LSP
  5. UPi-S1h
  6. HR-LSPET
  7. MPII
  8. COCO

More specifically:

  1. Human3.6M: Unfortunately, due to license limitations, we are not allowed to redistribute the MoShed data that we used for training. We only provide code to evaluate our approach on this benchmark. To download the relevant data, please visit the website of the dataset and download the Videos, BBoxes MAT (under Segments) and 3D Positions Mono (under Poses) for Subjects S9 and S11. After downloading and uncompress the data, store them in the folder ${Human3.6M root}. The sructure of the data should look like this:
${Human3.6M root}
|-- S9
    |-- Videos
    |-- Segments
    |-- Bboxes
|-- S11
    |-- Videos
    |-- Segments
    |-- Bboxes

You also need to edit the file config.py to reflect the path ${Human3.6M root} you used to store the data.

  1. 3DPW: We use this dataset only for evaluation. You need to download the data from the dataset website. After you unzip the dataset files, please complete the root path of the dataset in the file config.py.

  2. MPI-INF-3DHP: Again, we use this dataset for training and evaluation. You need to download the data from the dataset website. The expected fodler structure at the end of the processing looks like:

${MPI_INF_3DHP root}
|-- mpi_inf_3dhp_test_set
    |-- TS1
|-- S1
    |-- Seq1
        |-- imageFrames
            |-- video_0

Then, you need to edit the config.py file with the ${MPI_INF_3DHP root} path.

Due to the large size of this dataset we subsample the frames used by a factor of 10. Also, in the training .npz files, we have included fits produced by SMPL fitting on 2D joints predictions from multiple views. Since, the quality of these fits is not perfect, we only keep 60% of the fits fixed, while the rest are updated within the typical SPIN loop.

  1. LSP: We use LSP both for training and evaluation. You need to download the high resolution version of the dataset LSP dataset original (for training) and the low resolution version LSP dataset (for evaluation). After you unzip the dataset files, please complete the relevant root paths of the datasets in the file config.py.

  2. UPi-S1h: We only need the annotations provided with this dataset to enable silhouette evaluation on the LSP dataset. You need to download the UPi-S1h zip. After you unzip, please edit config.py to include the path for this dataset.

  3. HR-LSPET: We use the extended training set of LSP in its high resolution form (HR-LSPET). You need to download the high resolution images. After you unzip the dataset files, please complete the root path of the dataset in the file config.py.

  4. MPII: We use this dataset for training. You need to download the compressed file of the MPII dataset. After uncompressing, please complete the root path of the dataset in the file config.py.

  5. COCO: We use this dataset for training. You need to download the images and the annotations for the 2014 training set of the dataset. After you unzip the files, the folder structure should look like:

${COCO root}
|-- train2014
|-- annotations

Then, you need to edit the config.py file with the ${COCO root} path.

Generate dataset files

After preparing the data, we continue with the preprocessing to produce the data/annotations for each dataset in the expected format. With the exception of Human3.6M, we already provide these files and you can get them by running the fetch_data.sh script. If you want to generate the files yourself, you need to run the file preprocess_datasets.py from the main folder of this repo that will do all this automatically. Keep in mind that this assumes you have already run OpenPose on the images of all datasets used for training and you have provided the respective folders with the OpenPose .json files in the config.py folder. Depending on whether you want to do evaluation or/and training, we provide two modes:

If you want to generate the files such that you can evaluate our pretrained models, you need to run:

python preprocess_datasets.py --eval_files

If you want to generate the files such that you can train using the supported datasets, you need to run:

python preprocess_datasets.py --train_files