BB-Pose

BB-Pose is a Tensorflow 2 training pipeline for human pose estimation. The aim of this codebase is to set up a foundation on which future projects might be able to build upon. Supported models currently include:

• Hourglass Networks [1]
• Softgated Skip Connections [2]

Supported datasets currently include:

• MPII Dataset [3]

Note: This repository has only been tested on Ubuntu 18.04 and Debian (Sid).

Installation

1. Clone this repository:

   git clone https://github.com/salinasJJ/BBpose.git 

2. Create a virtual environment (using Pipenv or Conda for example).

3. Install the project onto your system:

   pip install -e BBpose

4. Install dependencies:

   pip install -r BBpose/bbpose/requirements.txt

5. Make script executable:

   chmod +x BBpose/bbpose/ingestion/scripts/data.sh        

Params

This project is setup around a config file which contains numerous adjustable parameters. Any changes to how the project runs must be done here by updating the params. There are 3 main commands to update the params:

1. The 'reset' command will reset all params back to their default values:

   python BBpose/bbpose/main.py reset

2. The 'update' command will update all requested params to new values. For example:

   python BBpose/bbpose/main.py update \
   --version 0 \
   --dataset mpii \
   --batch_per_replica 32 \
   --use_records True \
   --num_epochs 200 \
   --num_filters 144 \

3. The 'force' command is a special command that will update a set of model-defined hidden params. The command is there for a specific use case (i.e. resetting hidden params after an accidental updating) but in general, users of this repository should never have to use this command.

   python BBpose/bbpose/main.py force \
   --train_size 22245 \
   --validate_size 2958 \

Note #1: The 'reset' command will clear out all user-defined values as well as those of the hidden params. Without these pre-defined params, the model will fail to work properly, if at all. Please use this command carefully.

Note #2: CHECK VERSION NUMBER! Users should get into the practice of always checking which version number is being set in order to avoid overwriting old models.

Note #3: Do not set the path to 'img_dir' within the data directory. Best to place it in a directory outside of the project.

There are many params, some of which are interconnected to one another, and some which have limitations. Please see Glossary for a full breakdown of all these params.

That was the hard part. From here on out, the commands to create the datasets, train, and test are simple one liners.

Datasets

In order to create the datasets, we can make use of the 'ingest' command. This command contains two options:

1. setup: retrieves required data files and prepares the data for downloading.
2. generate: downloads the image set and generates Tensorflow datasets.

To setup and start downloading, call:

python BBpose/bbpose/main.py ingest --setup --generate

Note: The 'setup' option will clear everything in the data directory. So, if downloading is interrupted, make sure to only use 'generate' to restart downloading.

python BBpose/bbpose/main.py ingest --generate

Training

To start training on a brand new model, call:

python BBpose/bbpose/main.py train

If training is interupted for any reason, you can easily restart from where you left off:

python BBpose/bbpose/main.py train --restore

Testing

To evaluate your trained model:

python BBpose/bbpose/main.py test

Contribute

Contributions from the community are welcomed.

License

BB-Pose is licensed under MIT.

References

1. A. Newell, K.Yang, J. Deng, Stacked Hourglass Networks for Human Pose Estimation, arXiv:1603.06937, 2016.
2. A. Bulat, J. Kossaifi, G. Tzimiropoulos, M. Pantic, Toward Fast and Accurate Human Pose Estimation via Soft-Gated Skip Connections, arXiv:2002.11098, 2020.