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A new method for the visualization of spatial aligned volumes after 3D/3D image registration is presented in this paper. This work aims at displaying the full information of the multi-volume in the same scene. First, we form a vectorial volume from the spatial aligned multi-volume. Then, a statistical vectorial volume classification method based on neighborhood weighted Gaussian mixture model is applied...
On the basis of the modified Chan-Vese model and genetic algorithm, a new contour acquired method for image segmentation is presented. In the method, the raw contours were acquired by using the modified Chan-Vese model. The model is able to detect all the objects or details in the image. After that, the genetic algorithm was used to optimize the raw contours. The data points are respected as variables...
Bio-scaffolds which are most commonly open celled porous structures are increasingly used for tissue engineering and regenerative medicine. Numerical studies exploring the influence of architecture on structural and flow characteristics of porous media have been carried out but these studies almost exclusively assume an idealized repeating unit cell approach. However, most of the traditional techniques...
This paper presents an analytical model and a geometric numerical integrator for a rigid body connected to an elastic string, acting under a gravitational potential. Since the point where the string is attached to the rigid body is displaced from the center of mass of the rigid body, there exist nonlinear coupling effects between the string deformation and the rigid body dynamics. A geometric numerical...
In the past, deformation / fracture (D/F) characteristics, defined as load-deformation relationships until the materials are fractured, have been analyzed and evaluated on the surface from milli- to micro-scale. The D/F characteristics are affected by more than ten thousand micro-scale internal structures like air bubbles (pores), impurity particles and cracks in 1 mm3; therefore, it is required to...
This paper presents a CAD system, termed as HO-CAD, for heterogeneous object modeling based on ACIS and HOOPS. The HO-CAD system is composed of four modules which are used for creation, representation and visualization of geometry and material composition information, respectively. In the process of the software designing and programming, such considerations as interactivity, open ability, integrating...
This paper proposes an intelligent approach to model realistic tree models using semi-automatic generated L-systems. This approach is different from the traditional way of constructing L-systems that normally requires expertise in botany and manually coding. In this approach, only a few parameters those are highly intuitive and powerful to control the features of the tree need to be specified by users...
Element method model construction, a new approach for product modeling, is to positively impact on the front-end modeling methods for product design through boundary-lines of design deriving from progressive constraints on different parameter conditions.
With the development of clothing industry production, the template design and technology has marched from traditional hand-made into manufacturing production characterized by modernization and mechanization. In order to adapt to the needs of future production, the template design and technology teaching must change. Not only do we need standard basic teaching and teaching content change which is brought...
Let the idea of ??ensoul and vitalization?? of animation and animation technology into inherit and transmission of material cultural heritage, to give fresh vitality of these cultural heritage, provide an opportunity that for the creation of new culture and values in the traditional culture basis. Effectively bring into play charm of animation art in transmit traditional cultural, and by exploit modern...
An important phase in building a hair material simulation system is model construction. Because building the material model effects to simulation quality, model reality and storage space,.. besides, after the hair material model is built, we need to simulate the material model so that it has to guarantee about quality, model control ability. The article proposes a number of the hair material model...
In this paper, parameterized electrical-thermal co-analysis for power delivery networks (PDN) in 3D system integration is carried out. A 3D integrated system including glass-ceramic substrate, single and stacked dies, power delivery network, through-silicon vias (TSVs), controlled collapse chip connections (C4s), underfill material, and thermal interface material (TIM) is analyzed with several variable...
Positron range limits the spatial resolution of PET images. It has a different effect for different isotopes and propagation materials, therefore it is important to consider it during image reconstruction, in order to obtain the best image quality. Positron range distribution was computed using Monte Carlo simulations with PeneloPET. The simulation models positron trajectories and computes the spatial...
A virtual experiment system is built for material mechanical performance testing. The development process, including object modeling, 3D scene building, VRML connecting to the real-time database, design of interactive virtual 3D scene and complex virtual interaction, is discussed in this paper. In addition, the following key problems have been solved during the system development: virtual models building...
The construction industry has been troubled by its low productivity, one of the fundamental reasons behind the phenomenon is that there are so many non value-adding activities in the design-construction process. This paper first concludes main categories of non value-adding activities and then introduces what is building information modeling (BIM) and its main functions, based on that, the paper finally...
A purpose of this research is digitally reconstruct old Kabuki theater in Japan during the Edo period. Kabuki theaters and Kabuki played were important features of cultures in the Edo period. Reconstructing these by 3D CG helps us to represent the spectacle of Edo culture. In this research, we tried to reconstruct historial theater, Kanamaru-za that was refurbished in 1976, but conveys the structure,...
Despite convenient functions supporting videoconferencing, it is often difficult to maintain awareness and attention during remote lectures. One possible approach for addressing such difficulties is to present using a flip board held by a presenter, instead of presentation slides usually displayed on a different screen away from the presenter's face. This flip-board-based presentation style makes...
In this paper, an FDTD-based numerical simulation method developed to study the acoustic propagation processes in piezoelectric superlattices is briefly introduced. Comparing with the traditional ??-function model method, the FDTD-based method is more fundamental and is more convenient to be extended to higher dimensional cases, while the ??-function model method can be only used in the one-dimensional...
We consider the representation of densely sampled scanned 3D objects. Scanning physical objects can be an efficient way of obtaining natural looking input for computer graphics image generation. Scanned meshes however require large amounts of storage. For applications such as computer graphics, preserving the look of objects rather than precise measurements is critical. We seek a representation that...
This paper proposes a reverse engineering-based method for mass measurement of bulk materials with an irregular shape. Through repeated measurements, the multi-view point cloud data of a material stack surface can be obtained and the 3D surface model can be reconstructed after point cloud data registration. The volume of the stack can be calculated through image acquisition, data analysis and 3D reconstruction...
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