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Packet-switched communication of haptic data in real-time telemanipulation systems is characterized by high packet rates on the communication channel. Perceptual data reduction techniques for haptic signals successfully address this challenge. By applying a mathematical model of human haptic perception, the transmission of imperceptible signal changes over the network can be avoided. When extending...
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...
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...
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...
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...
This paper introduces volume springs that provide the volume effect to a surface model when it is deformed. The estimation of the properties of the model takes the real material properties into consideration, where each spring stiffness is derived based on the elasticity, rigidity and compressibility modulus. The proposed model can be adopted to simulate soft objects such as a deformable human breast,...
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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