PDQ Hash Enricher

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PDQ Hash Enricher#

Module type

enricher

PDQ Hash Enricher for generating perceptual hashes of media files.

Features#

  • Calculates perceptual hashes for image files using the PDQ hashing algorithm.

  • Enables detection of duplicate or near-duplicate visual content.

  • Processes images stored in Metadata objects, adding computed hashes to the corresponding Media entries.

  • Skips non-image media or files unsuitable for hashing (e.g., corrupted or unsupported formats).

Notes#

  • Best used after enrichers like thumbnail_enricher or antibot_extractor_enricher (takes screenshots) to ensure images are available.

  • Uses the pdqhash library to compute 256-bit perceptual hashes, which are stored as hexadecimal strings.

# steps configuration
steps:
...
  enrichers:
  - pdq_hash_enricher
...

# module configuration
...

# No configuration options for pdq_hash_enricher.*

API Reference

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