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Mechanical Design
Two different versions of the WearCam have been developped, a wireless (WearCam II) and a wired (WearCam III) one.
WearCam II
The WearCam II is composed of several parts: the camera itself, provided with a wireless transmitter and an adjustable mount, and
an analog wireless reciever to capture the signal from the WearCam and a simple usb capture device to digitalize the video on the computer (the
use of mobile video recorder is also possible).
Thanks to the wireless transmission, the batteries and its slim weight, the WearCam does not limit the child movements.
The adjustable straps allow the WearCam to be worn by any child.
A small mirror was added later, which is used to get a feedback of the gaze direction.
 The camera and the RF transmitter in the mobile box |
 The WearCam "Cap" |
 The eye mirror |
 The complete WearCam system, and the WearCam worn by a young child |
WearCam III
The WearCam III is used in situations when the child is not free of moving, for example during a psychological study. To get more
information on the child's field of view, a second cameras has been added. Now, in addition to the interaction zone and the gaze direction
that were seen in the WearCam II, we can have information on the manipulation zone thanks to the second camera. Two microphones provide
audio information, which can be used in studies on audio-visual coordination and interation. To support the small additional weight,
the cameras are mounted on a simple baseball cap.
With the presence of the camera, it is not possible to power this system with a simple battery, and a single wire and connector are used to
retrieve the audio and video data, as well as powering the whole system.
As in the WearCam II, the video can be retrieved either using two USB capture devices, or mobile video recorders.
 The WearCam cap, with the two cameras, microphones and cable connector |
 The complete WearCam system, and the WearCam worn by a young child |
Videos
Selected publications
People involved in this project