An experimental study of lossy compression in a real telepresence and teleaction system
An experimental study of lossy compression in a real telepresence and teleaction system
复制标题
真实远程呈现和远程操作系统中有损压缩的实验研究
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
Eckehard Steinbach
中科院分区：
文献类型：
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作者：
Verena Nitsch;B. Farber;L. Geiger;P. Hinterseer;Eckehard Steinbach
多自由度触觉数据交换的高网络要求代表了现代远程呈现和远程操作系统的挑战。本研究对文献中提出的基于心理物理学的有损触觉数据压缩方法进行了系统评估：死区方法及其扩展，引入了基于附加信号模型的预测。在一项实验研究中，在三自由度远程呈现和远程操作系统中研究了这些方法对数据包速率降低、感知接口质量和相关任务性能标准的影响。结果表明，扩展方法不会导致数据显着减少，并对感知界面质量和任务性能产生不利影响。在没有预测的情况下，死区方法显示出出色的速率降低性能，并且不会对感知的接口质量和大多数任务性能标准产生不利影响。我们从我们的研究中得出结论，结合死区和预测方法对于具有所使用的控制结构的远程呈现和远程操作系统来说是不实用的，而单独的死区压缩方法超出了预期。
High network requirements of multiple degrees of freedom haptic data exchange represent a challenge in modern telepresence and teleaction systems. This study presents a systematic evaluation of a psychophysics-based approach to lossy haptic data compression proposed in the literature: the deadband approach and its extension which introduces additional signal model based prediction. In an experimental study, the effects of these approaches on packet rate reduction, perceived interface quality, and relevant task performance criteria were investigated in a three degrees of freedom telepresence and teleaction system. The results indicate that the extended approach did not lead to significant data reduction and adversely affected perceived interface quality as well as task performance. Without prediction, the deadband approach showed excellent rate reduction performance without adversely affecting perceived interface quality and most task performance criteria. We conclude from our study that the combined deadband and prediction approach is not practical for a telepresence and teleaction system with the used control structure, while the deadband compression approach alone exceeded expectations.