Media Server 25.3
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# NullImageHashImageData

Removes (deletes) the training image from an image hash, but does not remove the training generated from the image. This means that images can still be recognized as duplicates but the training image is no longer stored in the database.

Removing the training image means that the training cannot be updated in future. If image hashing is enhanced in a future version of Media Server, you might need to retrain by supplying new images.

Type: synchronous

Parameter | Description | Required
--- | --- | ---
`database` | The name of the database that contains the image hash. | Yes
`identifier` | The identifier of the image hash for which you want to remove the training image. | Yes

## Example

    /action=NullImageHashImageData&database=ImageHashes&identifier=AnImage

## Response

    <autnresponse>
      <action>NULLIMAGEHASHIMAGEDATA</action>
      <response>SUCCESS</response>
      <responsedata></responsedata>
    </autnresponse>

## See Also

To remove an image hash from the database, use the action RemoveImageHash.

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Version 25.3 | Last updated July 2025

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Product: Knowledge Discovery Media Server 25.3

Topic Title: NullImageHashImageData