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FaceIdent
A simple approach to face identification, built on top of OpenCV and given a YARP network interface.
The program has two modes of operation. The first is calibration, where each user must show their face to the camera separately - press the number keys to assign each user with a different ID. You can see which face is mapped to which ID at the bottom of the window.
The second mode of operation is face detection, where each visible detected face is given an ID based on it's closest match (within a given error threshold) with the faces recorded during calibration. The boxes drawn around the faces display the id and the confidence value of the match. When in this mode the program sends the following YARP messages:
| Port | Bottle contents | Meaning |
|---|---|---|
| /faceident | “user appeared” ID confidence | A user has entered the view of the camera |
| /faceident | “user disappeared” ID | The user has left the camera view |
Keys:
| Key | Meaning |
|---|---|
| 0-9 number keys | Calibrate a given id against a face in the scene |
| d | Start detect mode, which will send YARP messages |
| c | Clear all faces in the database |
Requires: OpenCV, YARP
Written and tested on Linux, but it should work in Windows too. At the moment you'll probably have to run it with:
simple-faceident –cascade=/path/to/haarcascade_frontalface_alt.xml
In order to find OpenCV's data, on my machine it's in: /usr/local/share/opencv/haarcascades/haarcascade_frontalface_alt.xml
Todo: * Try normalised cross correlation instead of image differencing
Source code: http://svn.lirec.eu/foam/trunk/simple-faceident/
davegriffiths