def eliminate_insiders(components):
'''eliminates all components whose bounding boxes lie inside of others. The components object is manipulated in place
Args:
components: Components instance
'''
by_size = by_bbox_size(components)
labels = DisjointSet(n_labels=len(by_size))
# pairwise check of bounding boxes. once per pair.
for a in range(len(by_size)):
for b in range(a + 1, len(by_size)):
if is_inside(by_size[a], by_size[b]):
labels.unite(a, b)
survivors = labels.final_labels()
components.chars = [by_size[i] for i in survivors]
return
