== B-Alls 2019 ==

The enclosed hdf5 file (./b-alls-2019.hdf5) contains the dataset
B-Human used for its current (2019) ball detector. The structure
is the following:

  b-alls-2019.hdf5
  |-- negatives
  |   |-- data [113244 x 32 x 32 x 1]
  |   `-- labels [113244 x 4]
  `-- positives
      |-- data [26265 x 32 x 32 x 1]
      `-- labels [26265 x 4]

Every image is a patch of 32x32 pixels around a ball candidate from
the B-Human system, directly extracted from the camera. The images
just contain the Y-channel of the camera (in the range of 0 to 255).
They are padded with a constant 128 value if the patch lies at the
edge of the camera.

Every image has a label that consists of 4 values:
* Is it a ball? (0 or 1)
* If it is a ball, x coordinate of the center
* If it is a ball, y coordinate of the center
* If it is a ball, radius of the seen ball

Happy learning!