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https://jira.nuxeo.com/browse/NXSEM-9?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stéfane Fermigier updated NXSEM-9:
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Fix Version/s: 5.4.3
> CoreEventListener + service to build 64bits semantic hash of documents with
> picture content
> -------------------------------------------------------------------------------------------
>
> Key: NXSEM-9
> URL: https://jira.nuxeo.com/browse/NXSEM-9
> Project: Nuxeo Semantic R&D
> Issue Type: Task
> Reporter: Olivier Grisel
> Assignee: Olivier Grisel
> Fix For: 5.4.3
>
>
> Same feature as NXSEM-8 but for picture content. Instead of using TF-IDF
> features we can use normalized gray level pixel values of a scaled down
> (100x100 or 500x500) version of the picture pre-propecessed using the GIST
> global picture descriptors [1] using the LEAR C implementation (GPL) and
> maybe post-ranking using leveraging a smarter features extraction layer based
> on SIFT [3] using the libsiftfast [4] library.
> [5] provides a nice state of the art of related algorithms with scalability
> numbers.
> The goal is to be able to lookup related pictures in DAM (right click + "find
> more pictures like this one") or to perform picture query by example.
> [1] http://people.csail.mit.edu/torralba/code/spatialenvelope/
> [2] http://lear.inrialpes.fr/~jegou/src.php
> [3]
> http://homepages.inf.ed.ac.uk/rbf/CVonline/LOCAL_COPIES/AV0405/MURRAY/SIFT.html
> [4] http://sourceforge.net/projects/libsift/
> [5] http://lear.inrialpes.fr/pubs/2009/DJSAS09/
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