More data about Vocabulary trees

[andrej.p...@gmail.com]

Hey,

can somebody give more data about Vocabulary trees? What is the data inside, how are they trained, how are the loops detected, ... ?

Also at http://people.inf.ethz.ch/jschoenb/colmap/ we can download the Vocabulary trees, but what is the meaning of small, medium and large image collections? Could be this quantified?

Best, Andrej

[Johannes Schönberger]

Hi,

> can somebody give more data about Vocabulary trees? What is the data inside, how are they trained, how are the loops detected, ... ?

This should be a good starting point for further research: Arandjelovic, Zisserman. "Scalable descriptor distinctiveness for location recognition", ACCV 2014.

> Also at http://people.inf.ethz.ch/jschoenb/colmap/ we can download the Vocabulary trees, but what is the meaning of small, medium and large image collections? Could be this quantified?

Small: up to a few hundred images
Medium: up to a few thousand images
Large: 10,000 images and more

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> Best, Andrej
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