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 recreated. This is necessary because biometric vectors received by one face recognition module cannot be used by another.

The biometric vectors are also automatically recreated when you switch between the face recognition and search algorithm of Tevian and VideoIntellect 1.1 face recognition modules.

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


  • Recreation of vectors is available if initial vectors were received by the Face Intellect software not older than 5.2 version.
  • If the VisionLabs face recognition module is used, then after updating the Face Intellect 7.0 to a newer version, it is necessary to recreate the vectors.

You can recreate the biometric vectors manually. To do this:

Vectors are converted as follows:

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

  3. Wait for completion of biometric vectors recreation.

Errors may occur during the vectors recreation 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.

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

If Intellect malfunctions after the vectors recreation, do the following:

  1. Shutdown Intellect.
  2. Run FaceRecognitionTool.exe tool stored at: <Intellcet 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.

    Find more information on FaceRecognitionTool.exe in 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):

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


  6. Start Intellect 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).