chapter
Write operations in flash memory should be preceded by erase operations, which take an order of magnitude longer than writes. Therefore an update of a single byte causes an erasing of the whole block as well as restoration of a large amount of data. In order to avoid erasing during every update, non-in-place update schemes have been used. Obsolete data are later recycled by garbage collection. In...
chapter
This paper concerns a method to reduce centers progressively for radial basis function surface reconstruction from scattered point set to decrease the computational complexity, which belongs to the category of data filtering. In the procedure of the algorithm, we use kd tree to reduce the computational complexity and make it practical for large number of points, then use the radial basis function...
chapter
This paper presents the design and implementation of an application program an error sharing agent for collaborative multimedia distance education system which is running on RCSM (reconfigurable context sensitive middleware) for ubiquitous networks. RCSM provides standardized communication protocols to interoperate an application with others under dynamically changing situations. It describes a hybrid...
chapter
The wireless sensor network based localization system - Cicada is designed to support the location- awareness in indoor environment. The system is based on TDOA (time difference of arrival) between radio frequency and ultrasonic to measure the distances, uses the SWF(slide window filter) and least square fitting for the rough distance correction, adopts the UKF (unscented Kalman filter) to ultimately...
chapter
Rock fracture process that shows strong nonlinearity and complexity is simulated by cellular automata method. Cellular automata are considered as an efficient method to simulate complex system and study mechanisms of physical phenomena due to their locality and parallelization. In this paper rock samples can be discretized into cell elements that are connected with beam elements. Force and displacement...
chapter
A large display system usually consists of many projectors, whose projections are merged together to form a large screen. In this paper, we discuss technologies to join multiple projections into a large display system for multimedia entertainment and virtual reality applications. In contrast to using expensive hardware-based seamlessly merging modules, we adopt a software-based seamlessly merging...
chapter
Pepper's ghost is a well known technique in theater productions that allows the appearance of a semi- transparent and perhaps flying ghost on the stage. This technique has also been used with digital display to create a mixed reality (MR) system, where dynamic virtual objects are presented together with the static diorama. The usual pepper's ghost setup does not allow the presentation of the virtual...
chapter
The multi-resolution terrain technique is the most efficient tool for real-time rendering of a complex terrain. In this paper a bintree-based optimized algorithm for level of detail (LOD) terrain is applied based on the overall research of former algorithms. At the same time, the node evaluation function is given according to the influence of viewer's orientation and terrain's roughness and deviation,...
chapter
In this paper, we propose a hybrid representation of point-based models captured from calibrated depth images, through which the realtime rendering for the image-based models can be achieved. Our method starts from classification of input pixels of the input images into two categories, indicating the planar and non-planar surfaces respectively. For the planar surfaces, normal texture-mapping is applied...
chapter
In one traffic accident, the commercial vehicle that was in developing stage crash to the wall because of the error operation of the driver. In the accident, it was found that the hinge of the engineer hood was fractured. It was very dangerous for the driver and the passengers, and that also lead the energy absorbing ability reduced. The limitation of the design also was showed in the standard test...
chapter
Collaborative filtering, the most successful recommender system technology to date, helps people make choices based on the opinions of other people. Existing collaborative filtering methods, mainly user-based and item-based methods, predict new ratings by aggregating rating information from either similar users or items. However, a large amount of ratings of similar items or similar users may be unavailable...
chapter
chapter
chapter
The environment where Japanese industry has beenpaid with respect is changing tremendously due to the globalization of economics, where Asian countries are undergoing economical and technical development as well as advancing in information technology. For example, in the design of custom-made casting product, a designer whom lacking of casting knowledge may not be able to produce a good design. In...
chapter
We develop a virtual reality based driving training system of self-propelled gun (SPG). In order to make the interface of the system more powerful and natural, hand gesture interaction need to be incorporated into the system's interface. This paper discusses the use of hand gestures for interaction with the virtual training environment. We employ static hand gestures which coupled with hand translations...
chapter
This paper, in the development of interactive media art contents, represents a study of the software design which controls movement with sampled sound data. Sound processing samples numerical data from real sound, this is applied to graphic digital media software. The result from this percussion performance contents development is a moving image synchronized with sound
chapter
Currently there are many software packages that allow analysis of geographic information systems (GIS) data. However, these software packages limit user interaction and exploration of the GIS data to 2-dimensional (2D) interface. Virtual reality (VR) technology provides a great way for manipulating and visualizing 3-dimensional (3D) data in three dimensions. This paper presents the use of 3D large...
chapter
It is a friendly human-machine interaction to operate the robot using data glove. In this paper, EON is taken as platform, virtual robot and virtual environment is set up according the real scenery. The virtual robot is the agent of remote robot in the virtual environment. Data glove is used to operate the virtual robot to complete the control towards the remote robot. Operator transmits instruction...
chapter
Many GIS applications have appeared on the Web giving users access to both spatial and non-spatial (attribute) data. However, a challenging task of vector active map formats with such large volumes of online spatial data is that, in order to display them in most Web browsers, either a plug-in has to be installed or an applet has to be downloaded. In this paper, a Web service is proposed whose functionality...
chapter
During the procedure of target tracing, lots of stars will cross the field of view. These stars will disturb the procedure and, the precision of system will be degraded. At the same time, because the optical surveillance system is limited by environment, the targets are often covered by clouds. The above situations will seriously degrade the system's robustness, and once the target is disappeared,...
