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When you change the used face recognition module, for example, replace the Cognitec module with the Tevian module or vice versa, the biometric vectors are automatically re-generated. 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 when you switch the Tevian SDK version or the face recognition and search algorithm of Tevian and VideoIntellect 1.1 face recognition modules.

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

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

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

Note
titleAttention!

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

For example, the error below may occur due to the fact that the new face recognition module SDK or the algorithm of the Tevian 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, do the following:

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

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

  4. Upload the data.

    Info
    titleNote

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


  5. Execute the following script in the database manager (e.g. 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).


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