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This study investigated how people achieve pointing tasks using a vibrotactile device. A comparison using visual feedback when doing the same task is presented. Subjects were asked to reach a target as fast and as precise as possible guided by visual information from an LCD screen; and two types of tactile information generated by a specific glove we developed. The first type of tactile information...
In multimedia transmission over wireless channel, cross-layer diversity techniques, able to take advantage of both application and physical layer diversity, highly improve the overall system performance. Although the optimization of source and channel coding to the diversity orders available from the channel can deeply improve the system performance, low quality image are received at the decreasing...
This paper deals with the usage of virtual reality and scenario languages in the field of teleoperation: how to enable a group of teleoperators to control, in a collaborative way, groups of real robots, in turn collaborating with each other to achieve complex tasks; such tasks include inspecting a dangerous area or exploring a partially unknown environment. The main goal is to obtain efficient, natural...
Hardwired acceleration units capable of exploiting the parallelism of images rely on highly customized memory organizations. In this paper we analyze a widely used depth-discontinuity-algorithm applied in stereo vision systems. The main processing kernels are decomposed, and a hardwired acceleration unit is proposed for speeding up the computation. The hardware accelerator includes multiple arithmetic...
This paper describes the technology and systems developed for vehicle teleoperation using a multisensorial driving interface including visual and vestibular stimuli. Special attention has been paid to the increment of dexterousness resulted when teleoperation is performed from such multisensorial driving interface compared to classical ones. This paper also presents the results of a series of tests...
Presents a new generation of compliant multidegree of freedom piezoelectric microconveyer for microobjects based on the cooperation of arrayed direct-drive micro standing-wave ultrasonic actuators (microSWUMs). Their operating driving principles based on active frictional contact forces offer direct-drive and low-speed characteristics at the microscale. The tradeoff, however, is the complexity of...
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