data.md

Data

The data directory for a video is structured as follows:

video_name/
|-- rgb_256/
|   |-- 0001.png, etc.
|-- rgb_512/
|   |-- 0001.png, etc.
|-- mask/ (optional)
|-- |-- 01, etc.
|-- |-- |-- 0001.png, etc.   
|-- keypoints.json
|-- metadata.json
|-- homographies.txt (optional)

• metadata.json contains a dictionary:

'alphapose_input_size': [width, height]  # size of frames input to AlphaPose
'size_LR': [width, height]  # size of low-resolution frames (multiple of 16; height should be 256)
'n_textures': int  # number of texture maps required, calculated by 24*num_people + 1
'composite_order': [[1, 2, 3], [1, 3, 2], ... ]  # optional per-frame back-to-front layer compositing order

• keypoints.json is in the format output by the AlphaPose Pose Tracker. See here for details.