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When you change the used face recognition module, for example, replace the Cognitec module with the Tevian the VA module or vice versa, the biometric vectors are automatically re-generatedregenerated. This is necessary because biometric vectors received by one face recognition module cannot be used by another.

The biometric vectors are also automatically re-generated regenerated when you switch the Tevian VA SDK version or the face recognition and search algorithm of Tevian and of VA and VideoIntellect 1.1 face  face recognition modules.

Info
titleNote

To switch between the used face recognition modules, use the Tevianthe Va.IdentificationAlgorithm registry key (see Registry keys reference guide, for details about working with the registry, see Working with Windows OS registry).

The re-generation regeneration of biometric vectors is performed in the background without disturbing the face recognition system operation. Firstly, the faces which are already entered in the database are re-generatedregenerated. The current process of biometric vectors re-generation regeneration is displayed in the Face recognition and search interface module, on the Statistics tab, in the Faces in RAM field (see Displaying the statistics). If the Server is restarted, the process of re-generating regenerating the remaining faces will continue automatically.

Info
titleNote

By default, the biometric vectors are re-generated regenerated on one CPU thread. Using the Update.CpuCoreCount registry key, you can set an arbitrary number of threads on which biometric vectors will be re-generated regenerated (see Registry keys reference guide).

You can also re-generate regenerate the biometric vectors manually. To do this, do the following:

  1. Left-click the the  icon (Face Recognition Serverrecognition server) in the Windows taskbar (system tray) (, for details about the Face Recognition Server debug window see Debug window of the Face recognition server, see Appendix 2. Debug window).
  2. In the opened window, select (1) Tools -> → Recreate firs (2).
    Image Modified

  3. Wait for completion of biometric vectors re-generation regeneration.

Note
titleAttention!

Errors may occur during the biometric vectors re-generation regeneration process.

For example, the an error below may occur due to the fact that the new face recognition module SDK or the algorithm of the Tevian VA ALG2 face recognition module cannot recognize a face on a poor quality image and recreate a vector due to its better and more demanding recognition capabilities. Therefore, such image can be skipped.

Code Block
languageyml
[FIRSERVER][1] ERROR: Problem with regenerating fir for id 79656915-5BC1-E811-AA3F-1C1B0D34F0DF, skipping ...

If Axxon PSIM malfunctions after the vectors re-generation regeneration, do the following:

  1. Shutdown Shut down Axxon PSIM.
  2. Run the FaceRecognitionTool.exe tool utility stored at: <Axxon PSIM installation folder>\Modules.

  3. Specify required settings − —in the Path field, specify the path to the folder where folder to which the data will be uploaded to (e.g. (for example, C:\Backup).

  4. Upload the data.

    Info
    titleNote

    Find For more information on FaceRecognitionToolthe FaceRecognitionTool.exein utility, see Face Recognition tool Tool utility for extracting captured and reference faces from the database section.


  5. Execute the following script in the database manager (e.g. for example, SQL Server Management Studio):

    Code Block
    languagesql
    USE [Fir]
GO
DECLARE	@return_value int
EXEC	@return_value = [dbo].[spReset]
SELECT	'Return Value' = @return_value
GO


  6. Start Axxon PSIM and upload images from the folder specified in the Path field to the reference face database (see Selecting a way to upload an image to the reference face database).