To configure video-based biometric identification, add cameras to FindFace Security, grouping them subject to their location.
Privileges to create camera groups and cameras are managed in user’s permissions (see User Management).
In this chapter:
To create a group of cameras, do the following:
Navigate to the Preferences tab. Click Camera Groups.
On the Information tab, specify the group name. Add a comment if needed.
If you want to allocate a certain
findface-video-workerinstance to process video streams from the group, create or select one or several allocation labels.
To complete the allocation, list the labels in the
findface-video-workerconfiguration file. See Allocate findface-video-worker to Camera Group for details.
If you want to deduplicate events from cameras that belong to the same group, i. e. exclude coinciding events, check Deduplicate Events and specify the deduplication interval (interval between 2 consecutive checks for event uniqueness).
Use deduplication with extreme caution. If cameras within a group observe different scenes, some faces may be skipped. See Deduplicate Events for details.
On the Permissions tab, assign privileges on the camera group, specifying which user roles are allowed to change/view the camera group settings.
To add a camera, do the following:
Navigate to the Cameras tab.
Specify the name of a camera and add it to a group. If necessary, add a comment.
Specify the camera URL or path to the video file, for example,
To configure video processing, click Parameters and make adjustments:
Minimum face snapshot quality (
filter_min_quality): Minimum quality of a face snapshot to post. To be fitted empirically: negatives values around 0 = high quality faces, -1 = good quality, -2 = satisfactory quality, -5 = inverted faces and large face angles, face recognition may be inefficient.
Minimum face size (
filter_min_face_size): Minimum face size in pixels to post. If 0, the filter is off.
Maximum face size (
filter_max_face_size): Maximum face size in pixels in post.
Compression quality (
jpeg_quality): Full frame compression quality.
FFMPEG options (
ffmpeg_params): FFMPEG options for a video stream in the key-value format [“rtsp_transpotr=tcp”, “ss=00:20:00”].
Offline mode (
overall_only): Offline mode. Enable posting one snapshot of the best quality for each face.
Time interval (
realtime_post_interval): Time interval in seconds (integer or decimal) within which the face tracker picks up the best snapshot in realtime mode.
Post best snapshot (
realtime_post_every_interval): If true, post the best snapshot obtained within each Time interval (realtime_post_interval) in realtime mode. If false, post the best snapshot only if its quality has improved comparing to the previously posted snapshot.
Posting timeout (
router_timeout_ms): Timeout in milliseconds for posting faces.
Retrieve timestamps from stream (
use_stream_timestamp): If true, retrieve and post timestamps from a video stream. If false, post the actual date and time.
Add to timestamps (
start_stream_timestamp): Add the specified number of seconds to timestamps from a stream.
Play speed limit (
play_speed): If less than zero, the speed is not limited. In other cases, the stream is read with the given
play_speed. Not applicable for live streams.
Region of Tracking (
ROT): Enable detecting and tracking faces only inside a clipping rectangle. Use this option to reduce the video face detector load.
Region of Interest (
ROI): Enable posting faces detected only inside a region of interest.
To specify ROT/ROI, use the visual wizard. First, create a camera without ROT/ROI. Then open it for editing and click Parameters. You will see the visual wizard appear.
If necessary, specify optional parameters for video processing. Click Advanced Parameters.
- Force input format (
ffmpeg_format): Pass FFMPEG format (mxg, flv, etc.) if it cannot be detected automatically.
- Verify SSL (
router_verify_ssl): If true, enable verification of the server SSL certificate when the face tracker posts faces to the server over https. If false, a self-signed certificate can be accepted.
- Minimum motion intensity (
imotion_threshold): Minimum motion intensity to be detected by the motion detector.
Each created camera is associated with a so-called job, a video processing task that contains configuration settings and stream data and is assigned to
findface-video-worker. This task can be restarted (see Monitor Camera Operation).
To monitor the operation of cameras, navigate to the Cameras tab.
- Green: the video stream is being processed without errors.
- Yellow: the video stream is being processed for less than 30 seconds, or one or more errors occurred when posting a face.
- Red: the video stream cannot be processed.
- Grey: camera disabled.
For each camera, you will be provided with the following statistics: current session duration/ the number of successfully posted faces/ the number of faces processed with errors after the last job restart.
Each created camera is associated with a so called job, a video processing task that contains configuration settings and stream data and is assigned to
findface-video-worker. This task can be restarted.
With a large number of cameras in the system, use the following filters:
- Camera groups,