Page tree

Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

  • In ShowcaseDemo project on Windows, the appropriate function is worker_DoWorkVideo() .

  • In FaceTracker2 sample project on Windows, the appropriate function is CVisionExampleDoc::trackFromVideo().

  • In VisageTrackerDemo sample project on macOS, the appropriate function is trackingVideoThread().

Please search source code of each sample for the exact location.

...

The maximum number of faces that can be tracked simultaneously is internally limited to 20 for performance reasons.

Using VisageFeaturesDetector API Reference → VisageFeaturesDetector, any number of faces can be detected in an image.

...

The tracking distance depends on the camera resolution. For the face to be detected and tracked, it should be at least 30 pixels wide in the image. For example, for a webcam with resolution 1920×1080 (Logitech C920), the tracker can be configured to detect and track faces up to ~7.25 meters from the camera (with performance tradeofftrade-off).

Info

See also:

...

The online demo is based on visage|SDK for HTML5 and has some limitations due to the HTML5 implementation. For even better performance, you may want to download other visage|SDK for Windows, Android or iOS - each of these packages contains a native Showcase Demo ShowcaseDemo in which ear tracking can be tried.

If you are already developing using visage|SDK and want to enable ear tracking, you can use the ready-made configuration file “Facial Features Tracker - High - With Ears.cfg“. Ear tracking is enabled using the refine_ears configuration parameter.

Noteinfo

Add See also section with link to the Configuration Manual, to the API for setting configuration parameters and to FaceData structure for :

.


Face Recognition

How far from a camera can a face be recognized?

...

The technical demos in Android and Windows packages of visage|SDK include the source code intended to help you integrate liveness detection into your own application.

...

Info

See also:

How do I perform identification of a person from a database?

...