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Interfaces capable of providing tactile and force feedback are required to enhance interaction in VR applications, especially in those applications that involve the exploration of small geometric features and manipulation of small objects. This paper presents a high performance haptic interface capable of displaying tactile and force feedback information when interacting with virtual objects. The...
We developed a new hand model for increasing the robustness of finger-based manipulations of virtual objects. Each phalanx of our hand model consists of a number of deformable soft bodies, which dynamically adapt to the shape of grasped objects based on the applied forces. Stronger forces directly result in larger contact areas, which increase the friction between hand and object as would occur in...
This paper reports real-time virtual haptization of, for example, a remote object surface based on high-speed 3D shape measurement. With this system, the operator feels sense of touch as if tracing the surface of an object. We use a high-speed projector-camera system to achieve high-speed measurement of the object surface so that high-frequency haptic feedback is maintained at a haptic device PHANToM...
Nowadays, advanced virtual reality technology realize to generate tactile sensations for user interface with haptic information, such as force feedback and tactile sensation. Haptic devices are expected to achieve new type of interaction between human and computer. We have proposed an advanced framework of image editing operations with haptic interaction. Users can utilize haptic information to edit...
Using of free-form shapes has become popular to design complex products in agricultural machinery that have to fulfill engineering requeirments as well as aesthetic criteria. It meets the need of intuition in the process of creative design and computer aided design (CAID). Virtual Model Making System (VMMS) is usually used in the field of automobile styling design, but seldom used in agricultural...
We present a new interaction handling model for physics-based sound synthesis in virtual environments. A new three-level surface representation for describing object shapes, visible surface bumpiness, and microscopic roughness (e.g. friction) is proposed to model surface contacts at varying resolutions for automatically simulating rich, complex contact sounds. This new model can capture various types...
Nowadays, advanced virtual reality technology can realize tactile sensation with force feedback devices. These devices are expected to achieve new type of interactions between human and computers. In this paper, we propose an advanced image edition tool with force feedback interfaces. Users utilize haptic information for image edition additionally. We discuss about a method of haptic rendering and...
The goal of this research is to realize a new type of physical human-machine interface. In this research, active polyhedron can treat virtual three dimensional continuums having many force output points. Active 80-faced polyhedron can treat virtual objects that are more complex than active icosahedron which was previously developed. Towards realizing the overall hardware parts, 120 pieces of new and...
The tactile display for handheld devices requires compact hardware and useful applications. To satisfy these points, we have proposed the concept of `virtual active touch' that implements virtual exploration with a cursor on a screen through a pointing-stick-type tactile interface. The objective of this study is to present three-dimensional shapes on a two-dimensional screen without force feedback...
Applications such as online virtual fitting room for clothes demand massive computing powers in order to obtain real-time and high fidelity simulation.Computer cluster provides the infrastructure and solution to solve large scale, computation intensive and high throughput problems like fine-grained cloth simulation. In this paper, some key techniques for cluster computing based online virtual fitting...
Figure copying is a complex visuo-motor skill that uses aspects of vision and memory to guide precisely directed action. Previous studies have shown that explicit visual training improves the copying abilities of young children. This study considers training in a haptic virtual environment as a method to improve copying abilities in people who show weak performance in such tasks, namely normally developing...
Advanced force feedback devices can realize tactile sensation with the current virtual reality techniques. These devices are expected to bring new type of interactions between human and computers. In this paper, an advanced image edition tool with these force feedback interfaces is proposed. Users can utilize haptic information for image edition additionally. We discuss about a method of haptic rendering...
Many interactive surfaces have the ability to detect the shape of hands or objects placed on them. However, shape information is typically either condensed to individual contact points or categorized as discrete gestures. This does not leverage the full expressiveness of touch input, thus limits the actions users can perform in interactive applications. We present ShapeTouch, an exploration of interactions...
This paper describes a fast technique for cloth simulation based on a mass spring model. The difference is one animation process is divided to two segments which are numerical integrated together and a virtual force is added to get the rebounded animation segment. A local refinement is used to avoid the overlap of the two segments. Experiments show that this method can simulate the draping cloth efficiently...
This paper presents a novel method of contour reconstruction from dexel data solving the shape anomalies for the complex geometry in virtual sculpting. Grouping and traversing processes are developed to find connectivity between dexels along every two adjacent rays. After traveling through all the rays on one slice, sub-boundaries are connected into full boundaries which are desired contours. The...
Applications of 3 dimensional (3-D) virtual reality are now possible on current mobile phones due to the advances in mobile 3-D graphics technologies. However, the user-interface to these applications is generally still limited to the basic phone keypad which detracts from the sophisticated experience 3-D worlds can provide. In this paper we present a solution to this problem which utilizes the accelerometers...
Haptic rendering of complex scenes is becoming more and more important with the development of the virtual reality in surgical simulation. This paper studies the haptic rendering of the boundaries between tissues with different physical properties which is one of the common problems in complex scene simulation. Three indexes, boundary perceptibility, boundary force stability and plane height stability,...
Based on the real-time fluid simulating method in the field of volume and surface rendering, gas phenomena can be rendered by using semi-Lagrange algorithm in three-dimensional volume environment. Combined with the large eddy model of single building, simulation of turbulent wind field around building by simplified eddy model can decrease the complexity, and add details to render. The mirror reflection...
The atomic force microscope (AFM) has been widely used as a nano-effector with a function of force sensing to detect interaction forces between an AFM tip and a sample, thereby controlling the process of the nanomanipulation. However, both the extent and accuracy of force application are significantly limited by the nonlinearity of the commonly used optical lever with a nonlinear position-sensitive...
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