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Face search allows to find faces similar to a given photo in an archive.
If you perform facial search via the camera window, face track and dimensions are always highlighted.
To perform face search:
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Set the minimum similarity level (in %) between the face in the photo and faces from the archive (1). The search results will contain only the video footage with faces with similarity levels above the set value. 
Select a photo with the face to be searched for in the archive (2). Supported formats: png, jpg, jpeg, jpe. Clicking on a face will select this face as a search parameter. If you do not select a photo, then all faces recognized during the specified time will be displayed.
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Select, how to sort search results: 
- by the face match; 
- by time (3).
detection tool (see Face detection tools) recognizes faces that are in the field of view of the cameras connected to the Axxon Next Server.
If the recognized face meets the requirements (see Requirements for face detection tools), a biometric vector is created on its basis. It is stored in the Server database and used for comparison.
A biometric vector is a set of numbers of a given length that implicitly characterizes the visual identity of the owner of the biometric sample.
When you search for faces on the Client, the selected image is sent to the Server, where a biometric vector is created based on the received data.
The information about the biometric vectors stored in the database on the selected cameras for the specified time interval (see Setting a search interval) is uploaded to the RAM on the Server side and compared with the biometric vector created on the basis of the image received from the Client.
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The data in RAM is stored for about two hours. If you search for faces on the previously selected cameras and for a time interval shorter or equal to that stored in RAM, the search results will be obtained faster. |
Face search helps you find in the archive:
- Similar faces (see Search for similar face).
- Recognized faces (see Search for all recognized faces).
- Face contacts (see Search for face contacts).
Face track and face size are always highlighted in the surveillance window during face search.
Click the Search button.
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Once launched, the search can be stopped at any time. To do this, click the Stop button which appears instead of the Search button. |
This starts a search in the archive based on the defined criteria.
The video frames with faces satisfying search conditions will be displayed in the search results panel. A recognized face will be highlighted with a red frame, and the face similarity level(in %) will be shown below.
To instantly export a facial image from the scene, do the following:
- Click a face track within the camera window.
- Click the button
(4).
The facial image will be saved to a pre-specified folder (see Configuring export options).
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