Does BitCurator have tools for perceptual hashes? Looking for examples of identifying Similar Images (derivatives, crops, etc.)

[Kari R Smith]

Hi,

I remember seeing a presentation about using perceptual hashes to id similar images in a data corpus. What I’m looking for are examples of both tools/scripts and case studies / examples of looking for similar image files during triage or appraisal / processing.

 

Thanks for all pointers!

 

Best,

Kari

 

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Kari R. Smith

Institute Archivist and Program Head, Digital Archives

Institute Archives & Special Collections, MIT Libraries

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

IASC office: 617.258.5568  http://libraries.mit.edu/archives/ 

she | her | hers   @karirene69  [smithkr at mit.edu]

 

[Kam Woods]

It does not, but pHash 0.9.x should be simple to play with. Download, untar, and at command line in the directory run:

./configure

make

sudo make install

My understanding is that the wavelet method used is computationally intense, so be forewarned.

Kam

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[Kari R Smith]

Kam, thanks for the helpful pointer to this tool.

Kari

 

--------------------------------------------------------------------------

Kari R. Smith

Institute Archivist and Program Head, Digital Archives

Institute Archives & Special Collections, MIT Libraries

Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

IASC office: 617.258.5568  http://libraries.mit.edu/archives/ 

she | her | hers   @karirene69  [smithkr at mit.edu]

 

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