Suiping Zhou

Zhongke Wu

Ming-Quan Zhou

Cyber Games and Interactive Entertainment

One of the goals of mixed reality and ubiquitous computing
technologies is to provide an adaptable and personal
content at any moment, anywhere, and in any context. In
Multiplayer Ubiquitous Games (MUGs), players have to interact
in the real world at both physical and virtual levels.
Player profiles in MUGs offer an opportunity to provide personalized
services to gamers. This paper presents a way
to manage MUG player profiles on an NFC Smart Card, and
proposes a Java API to integrate Smart Cards in the development
of MUGs. This user centric approach brings new
forms of gameplay, allowing the player to interact with the
game or with other players any time and anywhere. Smart
Cards should also help improve the security, ubiquity, and
the user mobility in traditional MUGs.

Romain Pellerin

Chen Yan

Julien Cordry

Eric Gressier-Soudan

Player Profile Management on NFC Smart Card for Multiplayer Ubiquitous Games

Virtual illustration of a human face is essential to enhance the mutual interaction in a cyber community. In this paper we propose a solution to solve two bottlenecks in facial analysis and synthesis for an interactive system of human face cloning for non-expert users of computer games. Tactical maneuvers of the gamer make single camera acquisition system unsuitable to analyze and track the face due to its large lateral movements. For an improved facial analysis system, we propose to acquire the facial images from multiple cameras and analyze them by multiobjective 2.5D Active Appearance Model (MOAAM). Facial morphological dissimilarities between a human face and an avatar make the facial synthesis quite complex. To successfully clone or retarget the gamer facial expressions and gestures on to an avatar, we introduce a simple mathematical link between their appearances. Results obtained validate the efficiency, accuracy and robustness achieved.

Abdul Sattar

Nicolas Stoiber

Renaud Seguier

Gaspard Breton

Gamer's Facial Cloning for Online Interactive Games

That researchers in 
                  the field of computer games usually find it is 
                  difficult to simulate the motion of actual 3D 
                  model trees lies in the fact that the tree model 
                  itself has very complicated structure, and many 
                  sophisticated factors need to be considered 
                  during the simulation. Though there are some 
                  works on simulating 3D tree and its motion, few 
                  of them are used in computer games due to the 
                  high demand for real-time in computer games. In 
                  this paper, an approach of animating trees in 
                  computer games based on a novel tree model 
                  representation—Ball B-Spline Curves 
                  (BBSCs) are proposed. By taking advantage of the 
                  good features of the BBSC-based model, physical 
                  simulation of the motion of leafless trees with 
                  wind blowing becomes easier and more efficient. 
                  The method can generate realistic 3D tree 
                  animation in real-time, which meets the high 
                  requirement for real time in computer 
                  games.

Xuefeng Ao

Mingquan Zhou

Real Time Animation of Trees Based on BBSC in Computer Games

We present a new point matching method to overcome the dense point-to-point alignment of scanned 3D
faces. Instead of using the rigid spatial transformation in the traditional iterative closest point (ICP) algorithm, we adopt
the thin plate spline (TPS) transformation to model the deformation of different 3D faces. Because TPS is a non-rigid
transformation with good smooth property, it is suitable for formulating the complex variety of human facial morphology. A closest point searching algorithm is proposed to keep one-to-one mapping, and to get good efficiency the point
matching method is accelerated by a KD-tree method. Having constructed the dense point-to-point correspondence of
3D faces, we create 3D face morphing and animation by key-frames interpolation and obtain realistic results. Comparing
with ICP algorithm and the optical flow method, the presented point matching method can achieve good matching
accuracy and stability. The experiment results have shown that our method is efficient for dense point objects registration.

Yongli Hu

A Dense Point-to-Point Alignment Method for Realistic 3D Face Morphing and Animation

Video games are typically executed on Windows platforms with DirectX API and require high performance CPUs and graphics hardware. For pervasive gaming in various environments like at home, hotels, or internet cafes, it is beneficial to run games also on mobile devices and modest performance CE devices avoiding the necessity of placing a noisy workstation in the living room or costly computers/consoles in each room of a hotel. This paper presents a new cross-platform approach for distributed 3D gaming in wired/wireless local networks. We introduce the novel system architecture and protocols used to transfer the game graphics data across the network to end devices. Simultaneous execution of video games on a central server and a novel streaming approach of the 3D graphics output to multiple end devices enable the access of games on low cost set top boxes and handheld devices that natively lack the power of executing a game with high-quality graphical output.

A. Jurgelionis

P. Fechteler

P. Eisert

F. Bellotti

H. David

J. P. Laulajainen

R. Carmichael

V. Poulopoulos

A. Laikari

P. Perälä

A. De Gloria

C. Bouras

Platform for Distributed 3D Gaming

This paper presents a new anthropometrics-based method
for generating realistic, controllable face models. Our method
establishes an intuitive and efficient interface to facilitate
procedures for interactive 3D face modeling and editing. It
takes 3D face scans as examples in order to exploit the variations
presented in the real faces of individuals. The system
automatically learns a model prior from the data-sets
of example meshes of facial features using principal component
analysis (PCA) and uses it to regulate the naturalness
of synthesized faces. For each facial feature, we compute
a set of anthropometric measurements to parameterize the
example meshes into a measurement space. Using PCA coefficients
as a compact shape representation, we formulate
the face modeling problem in a scattered data interpolation
framework which takes the user-specified anthropometric
parameters as input. Solving the interpolation problem
in a reduced subspace allows us to generate a natural face
shape that satisfies the user-specified constraints. At runtime,
the new face shape can be generated at an interactive
rate. We demonstrate the utility of our method by presenting
several applications, including analysis of facial features
of subjects in different race groups, facial feature transfer,
and adapting face models to a particular population group.

Yu Zhang

Edmond C. Prakash

Face to Face: Anthropometry-Based Interactive Face Shape Modeling Using Model Priors

Mouse picking is the most commonly used intuitive operation to interact with 3D scenes in a variety of 3D graphics applications. High performance for such operation is necessary in order to provide users with fast responses. This paper proposes a fast and reliable mouse picking algorithm using graphics hardware for 3D triangular scenes. Our approach uses a multi-layer rendering algorithm to perform the picking operation in linear time complexity. The objectspace based ray-triangle intersection test is implemented in a highly parallelized geometry shader. After applying the hardware-supported occlusion queries, only a small number of objects (or sub-objects) are rendered in subsequent layers, which accelerates the picking efficiency. Experimental results demonstrate the high performance of our novel approach. Due to its simplicity, our algorithm can be easily integrated into existing real-time rendering systems.

Hanli Zhao

Xiaogang Jin

Jianbing Shen

Shufang Lu

Fast and Reliable Mouse Picking Using Graphics Hardware

As the numbers of 3D models available grow in many application fields, there is an increasing need for a search method to help people find them. Unfortunately, traditional search techniques are not always effective for 3D data. In this paper, we describe a novel method of interactive 3D model retrieval with building blocks. First, by using a cube block as the baseblock in a 3D virtual space, we may construct the query model with human-computer interaction method. Then through retrieving the polygon model of the database generated by the voxel model, we may get retrieval results in real time. Experiments are conducted to evaluate the performance of the proposed method.

Qingsong Huo

Guohua Geng

Xiaojing Liu

A New 3D Model Retrieval Method with Building Blocks

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International Journal of Computer Games Technology publishes original research and review articles on both the research and development aspects of games technology covering the whole range of entertainment computing and interactive digital media.

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International Journal of Computer Games Technology maintains an Editorial Board of practicing researchers from around the world, to ensure manuscripts are handled by editors who are experts in the field of study.

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International Journal of Computer Games Technology publishes original research and review articles on both the research and development aspects of games technology covering the whole range of entertainment computing and interactive digital media.

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International Journal of Computer Games Technology

Cyber Games and Interactive Entertainment

Cyber Games and Interactive Entertainment

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