HDF5 file, superblock version 0
group /
group /bg_areas
	attribute MATLAB_class = "struct"
	attribute MATLAB_fields = (variable-length list of string(1), not shown)
dataset /bg_areas/polyx: float64, shape (1, 5)
	attribute MATLAB_class = "double"
dataset /bg_areas/polyy: float64, shape (1, 5)
	attribute MATLAB_class = "double"
dataset /fg_areas: uint64, shape (2)
	attribute MATLAB_class = "double"
	attribute MATLAB_empty = 1