Missing data while running vocabulary tree examples [closed]

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I am learning to use the vocabulary tree package of the VSLAM stack for ROS groovy on top of Ubuntu 12.10 on an x86_64 with kernel 3.5.0-34-generic. I successfully compiled it but I am missing two example files signatures.dat and objects.dat since I already have the tree and the weights.

For example for the test_database example the usage information is:

Usage: ../bin/test_database vocab.tree vocab.weights signatures.dat objects.dat [NUM_SIGS]

In a look to the code of test_database.cpp I understand signatures.dat is the set of descriptors to quantize using the input vocab.tree and vocab.weights and I guess objects.dat are the document ids.

Where may I download this sample data?