Gestural inputs are nowadays widely applied to in-car interactive systems. The emerging sensing technologies allow for micro-gestures that can be achieved with less energy and are performed probably when the driver is grasping the steering wheel, thereby reducing the user attention to human–vehicle interaction. The movability of hands and fingers has to be considered before designing micro-gestures for driving scenarios, thus the newly defined gestures may be utterly different to the familiar multi-touch or body gestures. This paper presents a set of micro-gestures which are designed for intuitively commanding the in-car information system by taking both the gesture meanings and physical limitations into account. The study sets out the results of evaluating the feasibility of gesture sets with its performance in dual-task situation. The learnability and intuitiveness of micro-gestures as well as the effects they have on driving tasks are evaluated, and the effects of different grasping postures on the performance of novice drivers are also compared. It is concluded that the micro-gestures particularly designed for the grasp interface have advantages in multi-tasking, and they are appreciated by users who participated in the evaluation test.

中文翻译：

---

直观的抓握界面：方向盘上微手势的设计和评估，用于驾驶场景

如今，手势输入已广泛应用于车载交互系统。新兴的传感技术允许以较少的能量实现微手势，并且可能在驾驶员抓住方向盘时执行，从而减少了用户对人车交互的关注。在设计用于驾驶场景的微手势之前，必须考虑手和手指的可移动性，因此，新定义的手势可能与熟悉的多点触摸或身体手势完全不同。本文提出了一组微型手势，旨在通过兼顾手势含义和身体限制来直观地命令车载信息系统。该研究提出了评估手势集的可行性及其在双任务情况下的性能的结果。评估了微型手势的可学习性和直观性，以及它们对驾驶任务的影响，还比较了不同抓握姿势对新手驾驶员性能的影响。结论是，专门为抓握界面设计的微型手势在多任务处理方面具有优势，并且参与评估测试的用户对此表示赞赏。