Evaluating RGB+D Hand Posture Detection Methods for Mobile 3D Interaction

In mobile applications it is crucial to provide intuitive means for 2D and 3D interaction. A large number of techniques exist to support a natural user interface (NUI) by detecting the user´s hand posture in RGB+D (depth) data. Depending on a given interaction scenario, each technique hast its advantages and disadvantages. To evaluate the performance of the various techniques on a mobile device, we conducted a systematic study by comparing the accuracy of five common posture recognition approaches with varying illumination and background. To be able to perform this study, we developed a powerful hard- and software framework that is capable of processing and fusing RGB and depth data directly on a handheld device. Overall results reveal best recognition rate of posture detection for combined RGB+D data at the expense of update rate. Finally, to support users in choosing the appropriate technique for their specific mobile interaction task, we derived guidelines based on our study.