Topic
Haptic technology
About: Haptic technology is a research topic. Over the lifetime, 18818 publications have been published within this topic receiving 306713 citations. The topic is also known as: haptics & haptic media.
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TL;DR: Interestingly, it is found that videogame expert players tend to have faster and more economic motion in their dominant hands, which may suggest that better HFB is still needed, however, there may be visual compensation for the lack of haptics.
Abstract: Introduction: Laparoscopic surgery has become the standard of care for many surgical diseases. Haptic (tactile) feedback (HFB) is considered an important component of laparoscopic surgery....
78 citations
01 Jan 1998
TL;DR: The developed algorithms deal directly with geometry of anatomical organs, surface and compliance characteristics of tissues, and the estimation of appropriate reaction forces to convey to the user a feeling of touch and force sensations.
Abstract: Research in the area of computer assisted surgery and surgical simulation has mainly focused on developing 3D geometrical models of the human body from 2D medical images, visualization of internal structures for educational and preoperative surgical planning purposes, and graphical display of soft tissue behavior in real time. Conveying to the surgeon the touch and force sensations with the use of haptic interfaces has not been investigated in detail. We have developed a set of haptic rendering algorithms for simulating "surgical instrument--soft tissue" interactions. Although the focus of the study is the development of algorithms for simulation of laparoscopic procedures, the developed techniques are also useful in simulating other medical procedures involving touch and feel of soft tissues. The proposed force-reflecting soft tissue models are in various fidelities and have been developed to simulate the behavior of elastically deformable objects in virtual environments. The developed algorithms deal directly with geometry of anatomical organs, surface and compliance characteristics of tissues, and the estimation of appropriate reaction forces to convey to the user a feeling of touch and force sensations.
78 citations
02 Oct 2004
TL;DR: This work describes a new haptic & audio virtual environment to allow visually impaired people to have access to the three-dimensional graphic computer world through the sense of touch and augmented by audio output and voice commands.
Abstract: This work describes a new haptic & audio virtual environment to allow visually impaired people to have access to the three-dimensional graphic computer world through the sense of touch (using a new dual-finger haptic interface) and augmented by audio output and voice commands Such system has been developed within the European project "GRAB " The new system provides an integrated platform for the design and development of audio-haptic applications in different fields (architecture, art, aeronautics, medicine,) In order to demonstrate the validity of the approach, the project was specifically focused on the development of three applications for visual impaired people: an adventure game, a city map explorer and a chart explorer Both the new environment and the applications were tested by visually impaired people with different profiles (congenitally blind, advantageously blind, partially sighted,) to evaluate the usefulness and potential of these developments The results of this validation confirm the validity of the system Overall, it seems the GRAB system is feasible for these kinds of applications, although some features require some adjustments to create future usable tools
78 citations
31 Jan 2017
TL;DR: This work focuses on a prototypical task of tactile exploration over surface features such as edges or ridges, which is a principal exploratory procedure of humans to recognize object shape, and brings together active perception and haptic exploration as instantiations of a common active touch algorithm.
Abstract: A key unsolved problem in tactile robotics is how to combine tactile perception and control to interact robustly and intelligently with the surroundings. Here, we focus on a prototypical task of tactile exploration over surface features such as edges or ridges, which is a principal exploratory procedure of humans to recognize object shape. Our methods were adapted from an approach for biomimetic active touch that perceives stimulus location and identity while controlling location to aid perception. With minor modification to the control policy, to rotate the sensor to maintain a relative orientation and move tangentially (tactile servoing), the method applies also to tactile exploration. Robust exploratory tactile servoing is then attained over various two-dimensional objects, ranging from the edge of a circular disk, a volute laminar, and circular or spiral ridges. Conceptually, the approach brings together active perception and haptic exploration as instantiations of a common active touch algorithm, and has potential to generalize to more complex tasks requiring the flexibility and robustness of human touch.
78 citations
TL;DR: A compact, flexible, and lightweight pneumatic balloon tactile display has been developed suitable for mounting on robotic surgical master controls to provide the effective tactile feedback that is otherwise unavailable during robotic surgery.
Abstract: Robot-assisted surgery is characterized by a total loss of haptic feedback, requiring surgeons to rely solely on visual cues. A compact, flexible, and lightweight pneumatic balloon tactile display has been developed suitable for mounting on robotic surgical master controls. The tactile display consists of a molded polydimethylsiloxane substrate with cylindrical channels and a spin-coated silicone film that forms the array of balloons. Human perceptual studies were conducted to determine the optimal diameter, spatial resolution, and temporal resolution of the balloon actuator design. A balloon diameter of 3.0 mm provided the highest average accuracy (ges 95%) while offering five detectable inflation levels. Spatial accuracy in a two-actuator discrimination task reached 100% with 1.5 mm edge-to-edge spacing, and the accuracy of determining the order of two successive stimuli was greater than 90% when the time separation was 100 ms. Design optimization based on the results from this study enables the described tactile display to provide the effective tactile feedback that is otherwise unavailable during robotic surgery.
78 citations