Dynamic hand gestures have become increasingly popular as
		  touch-free input modality for interactive systems. There
		  exists a variety of arm-worn devices for the recognition of
		  hand gestures, which differ not only in their capabilities,
		  but also in their positioning on users’ arms. These
		  differences in positioning might influence how well
		  gestures are recognized, leading to different gesture
		  recognition accuracies. In this paper, we investigate the
		  effect of device placement on dynamic hand gesture
		  recognition accuracy. We consider devices being strapped to
		  the forearm on two positions: the wrist and below the
		  elbow. These positions represent smart watches being worn
		  on the wrist and devices with EMG sensors for the
		  additional detection of static hand gestures (e.g spreading
		  the fingers) being worn right below the elbow. Our
		  hypothesis is that wrist-worn devices will have better
		  recognition accuracy, caused by higher acceleration values
		  of a bigger action radius of dynamic hand gestures. We
		  conducted a comparative study using an LG G Watch and
		  Thalmic Labs’ Myo armband, for which we recorded a total
		  of 12960 gesture samples of eight simple dynamic gestures
		  in three different variants with eight participants. We
		  evaluated a potential difference in gesture recognition
		  accuracies using different feature sets and classifiers.
		  Although recognition accuracies for wrist-worn devices seem
		  higher, the difference is not statistically significant due
		  to substantial variations in accuracy across participants.
		  We thus cannot conclude that different positions of gesture
		  recording devices on the lower arm have significant
		  influence on correctly recognizing arm gestures.<br>
<br><pre>@article{Kefer_17_EvaluatingPlacementArm,
  author = {Kefer, Kathrin and Holzmann, Clemens and Findling, Rainhard Dieter},
  title = {Evaluating the Placement of Arm-Worn Devices for
  		  Recognizing Variations of Dynamic Hand Gestures},
  journal = {Journal of Mobile Multimedia ({JMM})},
  year = {2017},
  volume = {12},
  number = {3-4},
  pages = {225--242},
  month = apr,
  keywords = {Gesture recognition; Hand gestures; Accelerometer; Sensor
  		  placement; Arm-worn devices},
  url = {https://dl.acm.org/citation.cfm?id=3177192}
}
</pre>