Motion Gestures
Motion gestures are performed in 3D and can be divided into sensor-based
and camera-based gestures. Sensorbased gestures use sensors other than
a camera or touchscreen (such as a smartphone’s accelerometer). This division is motivated by the input techniques’ challenges for recognizers, as
well as the abundance of prior work. Camera-based methods represent the
majority of gesture recognition publications, and thus warrant their own
category.