How to view serialized octree

octree.serializeTree (treeBinary);
octree.deserializeTree (treeBinary);
cout <<endl << treeBinary.size() << endl; //137
for (int j=0; j<treeBinary.size(); j++)
{
for (int i = 7; i >= 0; --i)
{
putchar( (treeBinary[j] & (1 << i)) ? '1' : '0' );
}
putchar('\n');
}
//octree.setOccupiedVoxelsAtPointsFromCloud(cloudIn); // occupancy (i don't think this is even coded in PCL)