Search

We present a framework for generating paper-cutting effects on mesh models. Our system involves the construction of model defined paper-cutting patterns, extraction of the medial axis (MA) from the mesh models and position location for patterns on the mesh surface based on MA. Patch sets for placing patterns on the mesh surface are determined by the region growing algorithm. After patch sets parameterization, patterns are drawn on the parameterized domain and mapped onto the mesh surface by inverse sampling. [ABSTRACT FROM AUTHOR]

It is not easy to develop a game that applies physical laws. In this paper we proposed a physics editor to make it easy to produce a physics game. The physics editor uses XML for processing attribute values of each object. This paper presents the architecture of the physics editor, and describes its detailed components. The physics editor provides an efficient method that is easily applied to physical attributes of all objects in the game. In this paper, we showed the process of a car's creation, using the physics editor. The physics editor that is presented in this paper automatically creates physical objects, but it is limited to the rigid body for car racing. [ABSTRACT FROM AUTHOR]

There are several researches on 2D gaze tracking techniques for the 2D screen for the Human-Computer Interaction. However, the researches for the gaze-based interaction to the stereo images or contents are not reported. The 3D display techniques are emerging now for the reality service. Moreover, the 3D interaction techniques are much more needed in the 3D contents service environments. This paper addresses the gaze-based 3D interaction techniques. It is well known that there are characteristics of eye vergence according to the depth of object to be focused by human. This paper presents our experimental research results about the characteristics of eye vergence according to stereo image depth. Our research result is evaluated and applied to the gaze-based 3D interaction with the parallax barrier stereo image display system. [ABSTRACT FROM AUTHOR]

In this paper, a framework for individualizing the learning material structure in adaptive learning system is introduced. It aims to utilize the learning characteristics and provide a personalized learning environment that exploit pedagogical model and fuzzy logic techniques. The learning material consists of 4 structures; 1) theory, 2) examples 3) exercises and 4) activities. The pedagogical model and learning characteristics are based on the student's personality factor (Myers-Briggs Type Indicator (MBTI)), whilst the fuzzy logic techniques are used to classify the structure of learning material which is based on student's personality factors. This paper tend to illustrate the construction of fuzzy set and fuzzy rules to find the best rules based on combination of two approaches; learning style approach and fuzzy logic approach for adapting the content to the user, allowing a learning system to dynamically adapt the choice of possible learning structure through the learning material based on the user's personality factor. [ABSTRACT FROM AUTHOR]

Due to the advance of e-community, collaborative learning becomes popular on the Web. Among the learning models for collaborative learning on the Web, there are seminar-based model and project-based model. The objective of this paper is to compare the two learning models by analyzing learners' activities. Among learners' activities, we focus on learners' interaction level, their collaborability, and their accountability. Also, we propose new assessment items for evaluating learners fairly. In this paper, the existing evaluation items in traditional classroom-based collaborative learning are firstly analyzed in order to develop new evaluation criteria for the Web. Based on these analyzed items, we propose new items for assessing learners' activities in Web-based collaborative learning. After two Web-based classes, each of which has a different learning model, are performed, the proposed items are applied to compare the two learning models in terms of learners' interaction level, collaborability, and accountability. By performing this research, we can understand learners' activities clearer and can develop a better instructional technique to make improved academic achievement, improved attendance, and increased self-confidence in collaborative e-learning. [ABSTRACT FROM AUTHOR]

This paper describes a simulation of the physical processes of coupled heat and moisture transfer in a clothing assembly containing phase change material (PCM). This paper focuses on the analysis of the effect of the PCM. The results of simulation show that the PCM can delay the decrease in temperature of the clothing. The experiment results are also shown in this paper. A reasonable agreement was found when comparing the results of the simulation with the experiment results. [ABSTRACT FROM AUTHOR]

The feature-line extraction of a 3D model is a key step in the model-based Non-Photorealistic Rendering. In this paper, we introduce a new algorithm that is based on a sharpening filter to extract the feature-lines of 3D models. Experiments of feature-line rendering where our sharpening filter is introduced as a pre-calculation step are shown to compare with the existing algorithms ([1][2][3]). From these experiments it can be found that our rendering results reserve more feature details and contain less noise. Furthermore, in our algorithm, the computation time of rendering is also reduced. [ABSTRACT FROM AUTHOR]

For e-Learning, traditional navigator or searching engine has inherent weaknesses, so individualized intelligent learning is difficult to be realized. This paper proposed a hybrid knowledge structure reflecting the relationships among knowledge modules. A series of association knowledge items were gathered by standardized inputting and knowledge clustering based on association rules. Based on the mapping of knowledge items to knowledge domain, the proposed knowledge clustering and representation could intelligently provide learner clues of interrelated learning. The simulation results showed that the proposed plan is an effective scheme of intelligent learning. [ABSTRACT FROM AUTHOR]

In this paper, Petri net theory is taken into analyzing the Virtual Experiment (VE) in the Virtual Experiment Environment (V.E.E.). After applied the Petri net to V.E.E., the V.E.E. then can monitor the experiment progress and measure the learning effects of students when the students are doing experiment. Petri net is an approach that can be used as a visual-communication aid similar to flow charts, block diagrams, and networks. Therefore, the experiment steps are easily modeled by Petri net. According to the data which is collected by the V.E.E., there are two major error types that a student might make during an experiment. The first error type is the procedural error and the other one is measuring error. In the end of this paper, an experiment system is implemented. There were 72 3rd year students in junior high school involved in the experiment. In this experiment, we did both of pre-test and post-test in order to make sure the Petri net-enhanced V.E.E. is useful. [ABSTRACT FROM AUTHOR]

The navigation and rendering of very large-scale terrain are facing a difficult problem that the geometry data and texture data cannot be used directly due to the storage space, computation capacity, and I/O bandwidth. To provide more realistic detail of terrain scene, procedural detail is a good solution. Firstly, this paper introduces a method of procedural geometry based on the terrain tile quad-tree and the Patch-LOD algorithm. Then, the texture generation operator is described and the method of dynamic pre-computation of patch-texture is presented. Finally, the experimental system based on these above ideas and methods has been implemented. The experimental results show that these methods are effective and are appropriate to the development of 3D games and battlefield applications. [ABSTRACT FROM AUTHOR]

The technology of 3d modeling include geometry and behavior modeling method, it is the base of virtual environment construction. Geometry modeling is mature, but the behavior modeling method develops slowly. For the simulation of satellite in virtual space environment, a new geometry and behavior 3D Modeling language (GBML) based on object hierarchical structure is given in this paper. For simulating space object's geometry and behavior, the language define the basic primitive and use the tree structure to represent, manage and rendering the space object's geometry and behavior parameter. At the end, Using the OpenGL, we implement the model manage component (ModelReaderCom) based on GBML. The testing shows that the method is useful and practical which can be wildly used in kinds of virtual environment. [ABSTRACT FROM AUTHOR]

Shadow maps provide a fast and convenient method of generating real-time shadows in computer games. Unfortunately, shadow maps suffer from aliasing problems. Percentage Closer Filtering (PCF) is one of the solutions, but in cases of severe aliasing it can only mask the aliasing by unnaturally blurring. In this paper we present two improved antialiased shadow algorithms based on PCF, named as Modified PCF I and Modified PCF II. The primary idea of our algorithms is to make sawtooth shadow edges straighter just by data modification before bilinear interpolation in PCF. We respectively implement the algorithms with graphic hardware in Pixel Shader 2.0 and 3.0, several examples are also provided to show that most of aliasing artifacts have been removed compared with PCF. The time complexity and hardware requirement of Modified PCF I are almost as same as that of PCF. The resource requirement of Modified PCF II is more rigorous than that of Modified PCF I, but it can still accommodate to real-time game rendering with obvious antialiasing effect. [ABSTRACT FROM AUTHOR]

In this paper the simulation-based analysis of the reason of TCP throughput and loss over multihops wireless networks is given. An end-to-end combination scheme including both limiting of sending window size and delayed ACK mechanism to improve TCP throughput over multihops wireless networks is evaluated. The simulation results show the combination scheme has better goodput and loss performance than traditional TCP. [ABSTRACT FROM AUTHOR]

Anisotropic texture mapping is not suitable for mobile devices because of their limited power consumption and low performance. To solve this problem, this paper proposes a triangle-based sub-texel precision anisotropic filtering (TSPAF). Then a hybrid triangle-based sub-texel precision anisotropic filter (HTSPAF) is presented, which combines the bilinear filtering and TSPAF filtering with the MIPMap layer selection. The experimental results show that the new approach can obtain good quality images with lower hardware cost, which is thus feasible for mobile GPU hardware implementation. [ABSTRACT FROM AUTHOR]

As information technologies have been highly developed, mobile games are also becoming popular and splendid. However, the interface between human and computer has hardly changed and users can not operate mobile games exactly what they need due to the small buttons and small screen. In this paper, we present a new intuitive and interactive interface for mobile games using computer vision techniques optimized for low-performance mobile devices. It can track hand locations to interact with a cyber pet dog and execute several menus to give a command to mobile pet game. We use a HSI skin-color model and a CAMShift algorithm, which are adequate for the performance of mobile devices, in order to find the accurate hand location. And we use the Behavior-based AI method drawn from ethology to generate several actions of the pet dog. [ABSTRACT FROM AUTHOR]

Storytelling by a child, as a training activity, influences significantly a child's linguistic abilities, logic and thought process, imagination, and creativity. There presently exist many software-based storytelling applications. However, most are deemed incompatible or not suitable to Chinese children. Due to the limited vocabulary of pre-school and lower-level grade school children, speech-based and pen-based input models are considered the most effective way of input. But now there is not an effective multimodal mode to solve the problem for children's storytelling systems. In this paper, we propose a multimodal fusion framework that utilizes pen and speech techniques to incorporate both context information and linguistic attributes of the Chinese language into the design. Based on the proposed framework, we formulated specific methods of integration, and developed a prototype for our proposed system. [ABSTRACT FROM AUTHOR]

This paper presents a new computer supported remote learning and gaming method using Tele-Face Mouse system. The Tele-Face Mouse system is being developed as a teleconference system. It converts simple desktop computers to a teleconference system. The main advantage of the Tele-Face Mouse system is that it enables people to share a computer screen as a working space, and to interact with it using mouse pointers that followed by user face videos. By presenting that it is also the key point in remote learning, this paper shows that the Tele-Face Mouse system can be effectively used in remote learning and gaming. [ABSTRACT FROM AUTHOR]

A method of developing cartoon game on traffic safety education of Chinese children is presented in this paper. Based on the psychological characteristic of children and constructivism learning theory, the design of game scenario, character's emotion and interaction is introduced. The scene in this cartoon game is based on Gibson's theory of affordances and all the signs on objects are easily distinguished. A finite state machine is used for expressing the emotion state of a cartoon character, and NPC (non player character) is introduced to arouse the interest of a child user. The cartoon game can run both on local PC and on Internet, a child user can learn safety knowledge by interactive method. The result will offer a new means for traffic safety education of children in china. [ABSTRACT FROM AUTHOR]

Excessive game play of adolescents is one of the serious problems faced by the information society. This paper reviews the related work and programs of this field first, and then explores the mechanism which leads to Game Addiction (GA) from the perspective of inner architecture of game. We find that game addiction is due to the PS-DA cycle embedded in games, and provide a method to control and utilize GA from the source of edutainment game development. Furthermore, we discuss the possibilities of implanting the PS-DA mechanism into instruction and general activities. [ABSTRACT FROM AUTHOR]

In this exploratory paper, we propose to develop a new paradigm for teaching virtual dissections-a task prevalent in public schools- 3-D interactive electronic books that blend the state-of-the-art techniques in computer graphics with 3-D hypermedia. Students will learn experientially in this highly innovative environment by employing two powerful modes of interactive inquiry, exploration and guided inquiry. This development effort is designed to greatly improve the quality of the learner's experience while engaging in the virtual dissection tasks so prevalent in middle school classes in the United States. Our electronic books, enriched with high-fidelity 3-D video, annotations, and illustrations, will allow students to witness and explore a real dissection procedure as if they were there. In this paper, we articulate the technical and pedagogical challenges and present some preliminary results for content creation and visualization. [ABSTRACT FROM AUTHOR]

This paper presents our design and experiment of a computer-assisted on vectors in high-school. Our main goal is to improve the acquisition of notions by all pupils, from advanced level to remedial level. Our secondary goal is to improve the motivation of pupils toward maths and sciences. Our approach consists in making the pupils practice the notions included in a given set of pedagogic objectives, and to do it through real world-inspired problems. We draw on MobiNet, a platform that simulate programmable mobiles on screen and through the network. Our consists of a set of pre-programmed interactive simulations, allowing the pupils to react on their errors and to validate each exercise in an autonomous way. This was conducted in the same conditions and constraints than an ordinary math lab: same duration, and no preparation of the pupils (but the ordinary math course). Still, the autonomy of the exercises and the network ability would also allow the use with no teacher on place. In this paper, we describe our vector experiment: objectives, design, conduction, and evaluationThis study was conducted in the scope of pedagogy training for PhD students at the Grenoble CIES.. [ABSTRACT FROM AUTHOR]

This paper presents a new way to test embedded software with a scenario pattern-based method. It also introduces some concepts of scenario and scenario patterns, and formalizes the embedded software with scenario model ACDATE. The verification patterns are built with embedded system, and are tested with the samples of basic scenario pattern. This paper shows the process about how to verify the embedded software. [ABSTRACT FROM AUTHOR]

Among the keystones of interactive education are learners' motivation and visual tools that support learners' study at their convenient. In this paper we consider the finite state machines (automata) as an example of an interactive e-learning. Because of its abstract nature, automata seem to be less motivating to study despite its importance as a model of several software and hardware applications. This paper tackles the motivation problem and the design of supporting visual tools. We have three goals: motivating learners through several visual examples, introducing interactive visual tools to support interactive e-learning, and to evaluate the performance of several existing tools to Figure out which is practically more useful. To achieve these goals, a set of visual finite state machines examples was designed, an interactive automata simulator is introduced, and a performance evaluation is carried out. The visual examples and the tools are designed as Java applets, using Java 2D interface, so that they can run on any environment. It also enables the learner to easily access the tools through the web which is a support for interactive e-learning of finite state machines. [ABSTRACT FROM AUTHOR]

In this paper we consider the role of story in digital technology enhanced learning and the issues involved in constructing digital narrative learning environments. We will see that story has played an important role in education for a very long time, well pre-dating the use of digital technologies, and can be closely related to a number of theoretical approaches to learning. However story has recently become a much more significant topic for research, not only in education and digital technology, but also in other fields, such as knowledge management, and we examine why it has become such a central concern. The paper then looks at the existing use of story in fielded educational applications, and questions how far it has actually been used as an essential mechanism producing a narrative learning environment - rather than merely as motivational support. The relationship between story and computer games is an important issue here. We argue that the interactivity of digital media raises fundamental problems for the use of story which are still challenging researchers, and look at the various approaches to dealing with these problems, citing a number of example systems. Finally, we discuss the direction in which the technology is moving what it offers now and what it may offer in the near future, and what technology support is currently available for creating digital narrative learning environments. [ABSTRACT FROM AUTHOR]

A framework of collaborative system based on multi-stereo vision for a shared mixed reality (MR) application is described in this paper. The traditional immersive VR system usually separates the users from the real environment and mainly provides CG-generated space. Recently an alternative approach is through Mixed Reality, which allows user to manipulate objects in a combined environment of the real world objects and virtual space. We propose a framework of shared mixed reality environment to show a real world object with a stereo view and natural operating interface for the separated users. In this paper we mainly describe the sketch of the system and the structure of each functional part and their implementation approaches. [ABSTRACT FROM AUTHOR]

In this paper, we propose a computer interaction method for a game. The game is played by using finger shadow cast by a projector to move a ball rendered by a computer. We use a camera to track the movement of the finger shadow. A simple algorithm to move this ball was developed, which depends on the position of the shadow in the camera picture. The algorithm consist of three parts: the recognition of the shadow, the calculation of the ball by using transformation matrices, and the recognition of the collision between the ball and the shadow and consequential the direction of the ball-movement. Keywords: Camera tracking, collision, shadow. [ABSTRACT FROM AUTHOR]

In this paper, we present a digital repair method for archeological relics with some vacant areas. We first use the simple method to find the neighboring area which influences the shape of the vacant area. Then we construct the bi-cubic Bezier spline surface to interpolate given points in the influencing area. Re-sampling points on the bi-cubic Bezier spline surface, we can use triangle meshes to repair vacant areas. The advantage of this method is that the repaired area can smoothly be patched with other parts of archeological relics and it can keep the real shape of vacant areas. [ABSTRACT FROM AUTHOR]

In this paper, we propose a new shape feature for shape-similarity search of 3D polygonal-mesh models in digital museum. The shape feature is an extension of the D2 shape functions proposed by Osada. Our proposed shape feature is a combination of geometry and texture which is also invariant to similarity transformation. Experiments showed that, our method achieved better performance improvement especially for appearance retrieval of 3d model. [ABSTRACT FROM AUTHOR]

A novel digital historical heritage restoration approach is presented in this paper, which is based on photo-realistic 3D reconstruction from uncalibrated image sequences. Original images of the targets, such as statues, buildings, or culture relics, are captured with a hand-held camera and processed in three steps, which consists of preprocessing, sparse reconstruction and dense reconstruction. The reconstructed surface models can be preserved or exhibited as digital copies of the heritage; experimental results show the effectiveness of the proposed approach and its potential to be applied in the field of historical heritage restoration. [ABSTRACT FROM AUTHOR]

This paper proposes a blind watermarking scheme for 3D motion signal based on frequency domain, using addition property of DFT and noise eliminating. The algorithm embeds a watermark into the 3D motion by perturbing the middle frequency coefficients. During watermark extraction, the detected signal is smoothed to get an approximation of original signal by noise eliminating to obtain the watermark noise, which is amplified to extract watermark. Experimental results shows that the algorithm for 3D motion is resilient to many attacks such as Gaussian White Noise, resampling, smoothing, cropping, enhancement, attenuation and rearranging. [ABSTRACT FROM AUTHOR]

We describe in this paper an experimental setting for browsing and reading simultaneously multiple digital documents. An hemispherical visualization device is used to immerge the reader into 3D representations of digital collections. [ABSTRACT FROM AUTHOR]

Tour into the picture (TIP) is a technique that can make animation from one 2D image of a scene. Compared to traditional geometry based modeling method, it is not only realized easily, but also can provide better effects of navigation. Based on the previous research experience, this paper mainly introduces the application of TIP for digitization of Culture Heritage by using relative depth calculation and cubic panorama. Finally, by using a hybrid NPR/TIP approach, we provide stylized interactive and real-time scenes walkthrough so as to convey a kind of specific cultural spirits. [ABSTRACT FROM AUTHOR]

In this paper, we present novel systems supporting remote interactions between humans and also between humans and animals. We developed interfaces which supports non-verbal modes of communication. We introduce the Poultry.Internet system, a remote multi-modal human-pet interaction system. This system allows humans to remotely touch their pet using a system interconnected through the Internet. We also present the Internet.Pajama, a wearable suit which allows parents to interact with their child. The aim of the system is to allow parents to hug their child while they are not at home. [ABSTRACT FROM AUTHOR]

This paper proposes a prototype of an optical tracking system based on a single camera, and presents a design of the active infrared optical tracker to improve the stability of the tracking. Moreover, a method based on Virtual Visual Servoing (VVS) is utilized to compute the pose of the device to be tracked. With the proposed method, the pose computation can be considered as the dual problem of visual servoing, thus an accurate and robust result can be obtained. The proposed system can be regarded as a 6-DOF controller and can be widely applied in the fields of entertainment, education and industry, etc. [ABSTRACT FROM AUTHOR]

This paper presents a strategy of dynamic user modeling for sketch-based user interface. A user model is defined as an incremental decision tree for a specific user. A drawing style modeling process is designed to model user's temporal drawing performances among inputting strokes, and to predict the possible shape in term of fuzzy matching. A user mediation process is proposed based on relevance feedback to capture users' drawing intentions and refine the recognition results. Experiments prove efficiency of the method. [ABSTRACT FROM AUTHOR]

In this paper, we illustrate an augmented reality toolkit that can be used to develop edutainment materials with 3-dimensional graphics and video images. It is based on SEDRIS(Synthetic Environment Data Representation and Interchange Specification) and represents a complete range of real world object attributes. The toolkit manipulates and integrates 3-dimensional graphics objects and video. The virtual environment data structure allows object attributes to be visualized and interactively manipulated in the toolkit. [ABSTRACT FROM AUTHOR]

This paper presents a physically-based approach for real-time music fountain simulation based on fluid dynamics and particle systems. A special case of Navier-Stokes equations is explored and particles are employed to model fountain geometry. Music intensity is used to synchronize the motion of fountain particles, and simple dynamics equations of particles are used to simulate realistic fountain behavior. The proposed algorithm can be easily integrated into interactive applications for real-time fountain simulation. [ABSTRACT FROM AUTHOR]

This paper describes the design of a distributed architecture to support an interactive, interoperable, and collaborative forest fire fighting simulation using High Level Architecture (HLA). Based on the Run-time Infrastructure (RTI) services which are specified in HLA and C++ application programming interface (API) of the RTI, The distributed virtual fire fighting environment provides a practical foundation to enhance interactivity, interoperability for distributed simulation.. Users can build new federation application by the way of the goal system reorganization. The key techniques, such as FOM/SOM design, system structure, running mechanism of simulation system are discussed. [ABSTRACT FROM AUTHOR]

A narrow-band-based adaptive level set method is proposed for mesh evolution in this paper. In the preprocessing step, the portions of the mesh with high curvature are detected and clustered as fine geometric details. Then the fine grids with optimal orientations are defined for each detected portions, while the coarse grid is chosen for global evolution. The solutions on different scale grids are synthesized as the final results. Compared with the level set solution on the uniform grid, our approach can achieve a good compromise between computational costs and mesh evolution quality. The implementation results also show that it is an efficient and robust method. [ABSTRACT FROM AUTHOR]

Based on the newly appeared image editing and image pro- cessing techniques, a novel interactive, computer-assisted system is proposed for facial synthesis. This paper presents the architecture of this facial synthesis system and gives a detailed description of the four key modules. The techniques used in these modules are also particularized. First, graph cut algorithm is used to automatically select region. Then gradient domain fusion is used to get better result. Finally, k-means method is used to improve efficiency. The experimental results show that our experimental facial synthesis system can produce visually good synthesized face images. Keywords: K-means clustering, Objective stroke, Background stroke, Automatic region selection, Energy minimization, Graph cut, Gradient domain fusion. [ABSTRACT FROM AUTHOR]

Employing computer techniques to visualize the color changing of Dunhuang Frescoes is of great significance since the audience can re-experience this process and the protectors can discuss the protection measures according to the simulated video clips and thus help them make their decision more scientifically. But previously, because colorimetric and chemical modeling was not introduced to simulate the color changing of frescoes, there was a lack of objectivity and sense of reality. In this paper, however, two kinds of color changing, namely, color changing due to chemical changing of the pigment as well as dust accumulation, are modeled. Since this modeling describes the natural behavior of the color changing process, the simulation result is quite striking. [ABSTRACT FROM AUTHOR]

This paper describes a computational approach to style conversion of cartoon animation. Our system works in two stages: the internal color shading phase, in which characters painted by the conventional method are segmented into their constituent regions and edges first, textures painted using different media are then added to the identified regions, and the line rendering phase, in which curvature of edges detected during the first phase is calculated and used to pick up turning points from edges, strokes with defined shapes and textures are then placed in the positions determined by turning points along the contour as well as internal lines of characters. Our system obviates the tedium of creating more expressive rendering by hand, and keeps frame-to-frame coherence in the resultant animations. [ABSTRACT FROM AUTHOR]

In this paper, we present a new dynamic texture technique by using our new mixed auto-regressive moving average exogenous (MARMAX) model in the wavelet domain. The technique captures much more detailed local and global dynamic texture properties than the previous works and it can synthesize long dynamic texture videos with temporal coherency. The whole input video is firstly transformed into the wavelet domain in different levels, then we use MARMAX model to capture the dynamic characters of the original video, finally we transform the video back by inverse discrete wavelet transform (IDWT). A desired long dynamic texture video can be synthesized easily from a short input one. The experimental results demonstrate that our approach can produce visually promising dynamic texture sequences. [ABSTRACT FROM AUTHOR]

In this paper, we present a novel method for dynamic terrain in battlefield and an efficient plan to simulate crater in the battle. We explore a few methods for dynamic terrain surface, and analyze the different recent algorithms for representation and visualization of multiresolution static terrain, then select ROAM (Real-Time Optimally Adapting Meshes) as our basis to be improved and to be applicable in dynamic terrain projects. We further select half-ellipsoid model in the explosion theory as the physical based model of crater, and provide a procedural texture generation algorithm for crater, then give a hybrid multiresolution algorithm for dynamic terrain. At last the implementation results prove that the method and the algorithm are feasible and efficient. [ABSTRACT FROM AUTHOR]

In this paper, we describe a haptic deformation algorithm used in a virtual storytelling system known as the Digital Buddhist Image Creation System. This system supports not only haptic interaction, but also visual and auditory feedback and the combination of these three modalities provides a user with an immersive experience of a virtual cultural environment. We believe the proposed bi-directional haptic interaction will encourage users to spontaneously participate and engage with the system. To demonstrate and explore this concept, a virtual environment that tells the legend of Korea's 'Unju Temple' has been constructed. The proposed haptic interaction is expected to play an important role in supporting users as they directly experience and learn about this significant piece of cultural heritage in a digital, virtual environment. [ABSTRACT FROM AUTHOR]

Recently, motion capture is widely used in the human animation. But it is still difficult to create new-style animations from the existing motion capture data. In this paper, we propose a novel technique to create the style animations from an existing motion sequence. Firstly, we use linear time-invariant system (LTI) to derive an explicit mapping between the high-dimensional motion capture data and the low-dimensional state variables. Secondly, new style animations are created within the state space. Only a few important keyframes need be modified through adjusting the low-dimensional style variables. The remaining frames of the original motion can be generated automatically. Finally, we design an effective algorithm to calculate the model parameters. Experimental results show that the generated style animations are natural and smooth. [ABSTRACT FROM AUTHOR]

We introduce a new surface deformation and modeling method in this paper. Referring to the swept volume generation, the surface is pulled or pushed along a trajectory curve. The key point is the sweeping function. Surface points are moved to where they should be during sweeping operations according to the global parameter, which is determined by topological distance. An index factor controls how much the surface deforms around the handle point. The proposed method is easy to extend to fit different applications such as various constraints, local deformation and animations. [ABSTRACT FROM AUTHOR]

In this paper, we present a fast individual face modeling and animation system. The input of the system is a single frontal face image, which is captured by an ordinary video camera. And the output is 3D individual facial animation. Firstly, an Adaboost method is used to detect the face in the image. Then the key points of the face are located with the inverse compositional algorithm based active appearance models (AAM). The 3D geometry mesh of the individual face is then generated with morphable models. Finally, the direction and magnitude of existed motion vectors are adjusted according to different 3D face shapes using expression cloning technique. With this system, we can achieve realistic 3D facial animation with minimal and often no manual tuning. The experiments show that our system is fast enough for common applications. [ABSTRACT FROM AUTHOR]

This paper presents a fast texture synthesis method using texture patches with incremental sizes. In contrast to the existing work in the area, it offers much fast speed through efficient computations. By applying the method to a wide variety of texture samples, we have demonstrated the effectiveness of the method through the results and discussions. In addition, we have also applied this texture synthesis method to cube mapping for the fast viewing of surfaces decorated by textures. [ABSTRACT FROM AUTHOR]

The ability to better understand role performing during the learning process of a collaborative learning team is very crucial, in order to effectively support online students. Leadership roles which have the most influence in directing the team should be carefully recognized. Identifying the emergent team leaders is challenging because these roles are normally distributed and shifted among team members over time. In this paper, a new approach for the leadership roles identification is, thus proposed. The collaboration patterns are examined with different points of social network views to discover the network locations of the leaders. The proposed leadership index is a combination of degree of centrality, closeness and betweenness. The experiment and the simulation results indicate that the proposed index is promising. [ABSTRACT FROM AUTHOR]