coo_length, coo_width.
Other coo_ descriptors:
coo_angle_edges(),
coo_angle_tangent(),
coo_area(),
coo_boundingbox(),
coo_chull(),
coo_circularity(),
coo_convexity(),
coo_eccentricity,
coo_elongation(),
coo_length(),
coo_rectangularity(),
coo_rectilinearity(),
coo_scalars(),
coo_solidity(),
coo_tac(),
coo_width()