The impact of haptic feedback on the perception of unknown objects (10 without texture, 10 with texture, and 2 complex shapes) was examined. Using a point probe (a PHANTOM), three treatment groups of students (visual, haptic, and visual plus haptic feedback) explored a set of virtual objects. The visual treatment group observed the objects through a small circular aperture. Accuracy of percepti...

A novel haptic interface for extended range telepresence is presented that allows the user simultaneous wide area motion and haptic interaction in remote environments. To achieve an extended workspace, the haptic interface consists of a haptic manipulator for precise haptic rendering and a large portal carrier system that enlarges the workspace by prepositioning the end-effector. As the preposi...

Experiments are an important part of research in virtual environments for evaluating the benefits and the success of developed applications, systems or devices. In the context of virtual reality using haptic interaction tools, we want to describe a methodology, based on physical parameters coming from the haptic device itself, to evaluate haptic benefits for user interfaces. By giving a framewo...

Telepresence and teleaction (TPTA) systems enable a human operator to execute complex tasks within an inaccessible, dangerous, and/or scaled environment. Their goal is to provide a local and realistic immersion of the remote environment. In this context, the communication of haptic signals (velocity and force) plays an important role. As the exchange of haptic information over the communication...

Haptic technology as a key part of human-computer interaction allows us to use sense of touch in virtual reality by kinesthetic feel using force feedback. Increased production of haptic devices in recent years supported the development of many tools and libraries for programming applications with support of haptics. This paper introduces haptic technology and focuses on comparison of haptic app...

Application of haptic devices expanded to fields like virtual manufacturing, virtual assembly or medical simulations. Advances in development of haptic devices have resulted in a wide distribution of assymetric 6/3-DOF haptic devices. However, current haptic rendering algorithms work correctly only for symmetric devices. This thesis analyzes 3-DOF and 6-DOF haptic rendering algorithms and propo...

In this paper, we mainly present the analysis on the haptic data transmission over real network conditions in a networked haptic collaboration environment. Since haptic data are produced at the rate of 1khz, the transmission of haptic data is extremely sensitive to packet loss, and time variation. We took some experiments for transferring haptic data under various network conditions such as pac...

BACKGROUND Steering the tip of a flexible endoscope relies on the physician's dexterity and experience. For complex flexible endoscopes, conventional controls may be inadequate. METHODS A steering method based on a multi-degree-of-freedom haptic device is presented. Haptic cues are generated based on the endoscopic images. The method is compared against steering using the same haptic device w...

The existence of a common mechanism for visual and haptic representations has been reported in object perception. In contrast, representations of movements might be more specific to modalities. Referring to the vertical axis is natural for visual representations whereas a fixed reference axis might be inappropriate for haptic movements and thus also inappropriate for its representations in the ...

One of most interesting aspects in haptic research deals with the extension of application workspace, thus allowing haptic simulation within large virtual environments. Several devices have been realized that allow this kind of interaction, in particular our interest focuses on mobile haptic interfaces, realized by combining classic grounded haptic devices with mobile platforms. While grounded ...