XYZ系统在动画设计中的应用

ＸＹＺ系统是一套以线形时序逻辑为基础的ＣＡＳＥ环境系统，其核心是时序逻辑语言ＸＹＺ／Ｅ．ＸＹＺ／ＡＤＬ（ａｎｉｍａｔｉｏｎｄｅｓｃｒｉｐｔｉｏｎｌａｎｇｕａｇｅ）是ＸＹＺ系统在动画领域的应用．马华东博士采用基于时序逻辑的动画描述模型ＴＬＡＤ（ｔｅｍｐｏｒａｌ－ｌｏｇｉｃ－ｂａｓｅｄａｎｉｍａｔｉｏｎｄｅｓｃｒｉｐｔｉｏｎｍｏｄｅｌ），提出了动画剧本描述语言（ＳＤＬ／Ａ）．本文介绍的ＸＹＺ／ＡＤＬ语言是以ＸＹＺ／Ｅ的框架为基础扩充ＳＤＬ／Ａ而成．它使用ＸＹＺ／Ｅ中面向对象程序设计的基本结构——代理机构（Ａｇｅｎｔ）作为基本描述单元．代理机构由通讯进程和相应的包块构成，包块处理对象封装，进程处理通讯．从而能更方便地刻画动画过程中的复杂、多层次的角色（包括父子角色）的运动特征及多角色之间的同步协调关系，并且在统一的逻辑框架下实现了计算机动画中运动对象的行为抽象和运动的抽象描述，更具一般性．

一种草图动画工具的设计与实现

针对当前计算机在中小学课堂应用中采用静态幻灯片模式对学生缺乏吸引力、教学效率不高等不足,以及现有的动画制作工具对于大部分教师难以使用的问题,探讨了基于运动轨迹的动画制作方法、草图动画中的动作协调,以及形变算法在草图动画中的应用等问题,实现了一个草图动画制作工具。该草图动画制作工具支持平移、旋转、放缩等草图动画中常用的动作方式。基于运动轨迹的动画制作方法和简洁的用户界面使得设置动作像绘制物体一样简单。使用形变动画作为轨迹动画的补充方式,可制作出更加生动的动画。老师使用该工具可以快捷方便地制作出自己的动画。

一种基于粒子的牛顿流体与粘弹性流体统一模拟方法

在越来越受到人们关注的基于物理流体动画领域,目前分别模拟牛顿流体或粘弹性流体的方法很多,但很少有统一模拟两者的方法.文中基于光滑粒子流体动力学方法,通过对传统纳维-斯托克斯方程添加弹性应力项,提出了一种新的统一模拟牛顿流体和粘弹性流体的方法.通过实验说明该方法不仅有效,易于实现,而且具有良好的可控性,仅仅通过调节参数就可以模拟不同粘弹性、不同类型的流体现象.

Image Ratio Features for Facial Expression Recognition Application

Video-based facial expression recognition is a challenging problem in computer vision and human-computer interaction. To target this problem, texture features have been extracted and widely used, because they can capture image intensity changes raised by skin deformation. However, existing texture features encounter problems with albedo and lighting variations. To solve both problems, we propose a new texture feature called image ratio features. Compared with previously proposed texture features, e. g., high gradient component features, image ratio features are more robust to albedo and lighting variations. In addition, to further improve facial expression recognition accuracy based on image ratio features, we combine image ratio features with facial animation parameters (FAPs), which describe the geometric motions of facial feature points. The performance evaluation is based on the Carnegie Mellon University Cohn-Kanade database, our own database, and the Japanese Female Facial Expression database. Experimental results show that the proposed image ratio feature is more robust to albedo and lighting variations, and the combination of image ratio features and FAPs outperforms each feature alone. In addition, we study asymmetric facial expressions based on our own facial expression database and demonstrate the superior performance of our combined expression recognition system.

工程地质三维建模与可视化技术应用开发

Synthetic Geology Information System (SGIS) is an important constituent part of the theory of Engineering Geomechanics Mate-Synthetic (EGMS), and is the information system more suited for the collection, storage, management, analysis and processing to the information coming from engineering geology,' geological engineering and geotechnical engineering. Its contents involve various works and methods of the investigation, design, and construction in different stages of the geological engineering. Engineering geological and three-dimensional modeling and visualization is the fundamental part of the SGIS, and is a theory, method and technique by which, adopting the computer graphics and image processing techniques, the data derived from engineering geological survey and the calculated results obtained from the geomechanical numerical simulation and analysis are converted to the graphics and images displayed on the computer screen and can be processed interactively. In this paper, the significance and realizing approaches of the three-dimensional modeling and visualization for the complex geological mass in the engineering geology are discussed and the methods of taking advantage of the interpolation and fitting for the scattered and field-surveyed data to simulate the geological layers, such as the topography and earth surface, the groundwater table and the stratum boundary, are researched into. At the mean time, in mind the characteristics of the structure of the basic data for three-dimensional modeling, its visual management can be resolved into the engineering surveyed database management module, plot parameter management module and data output module and the requirement for basic data management can be fulfilled. In the paper, the establishment and development of the three-dimensional geological information system are probed tentatively, and an instance of three-dimensional visual Engineering Distribution Information System (EDIS), theConstruction Management Information System for an airport, in which the functions, such as the real-time browse among the three-dimensional virtual-reality landscapes of the airport construction from start to finish, the information query to the airport facility and the building in the housing district and the recording and playback of the animation sets for the browse and the takeoff and landing of the planes, is developed by applying the component-mode three-dimensional virtual-reality geological information system (GIS) software development kits (SDK), so the three-dimensional visual management platform is provided for the airport construction. Moreover, in the gaper, integrated with the three-dimensional topography visualization and its application in the Sichuan-Tibet Highways, the method of the digital elevation model (DEM) data collection from the topographic maps is described, and the three-dimensional visualization and the roaming about the terrain along the highway are achieved through computer language programming. Understanding to the important role played by the varied and unique topographical condition in the gestation and germination of the highly-dense, frequently-arising and severely-endangered geological hazards can be deepened.

动漫行业创业者胜任特征研究

Venture has become an important force for the sustainable economic growth of China, However, research on entrepreneurs is far failed to meet the actual needs, Animation and Comic Industry is an important component of the state-led Cultural and Creative Industries. Entrepreneurship is the rapid growth of population, but the empirical research on the Animation and Comic Industry entrepreneurs’ Competent Characteristic Model is rarely heard. As a manager of a national incubator which major in Cultural and Creative Industry, study these entrepreneurs competent characteristics is my responsibility. As an exploration, the study uses Competent Characteristic Model of classical design methods and behavior events interview method, and selects entrepreneurs which of animation and comic industry business start-up period as the objects. Through coding analysis of 31 entrepreneurs’ interview information, completed the amendment to the dictionary coding, and ultimately construct the animation and comic industry entrepreneurs need to have the threshold competence model and differentiating competence model. Differentiating competence model includes six competencies: tolerance and optimism, cooperation, creative innovation, pool talents, vision, decision-making and tempo control. Threshold competence model includes twenty features, divided into three dimensions: personal characteristics, knowledge quality, capacity of the quality. Knowledge and capacity of the quality are closely related to the core work of entrepreneurs, Personal characteristics concern the deep-seated motivation of the entrepreneurs. The study also analyses and discusses the characteristics of the entrepreneurs on the demographic variables.