Development of 3D-motion Database for Dance

本项目的目的是讨论和研究组织的方法。人体运动数据是建立人体运动数据库及其检索系统的目标。信息组织的一般操作需要三个过程：(1)将原始数据转换为原始信息，这些原始信息必须被分割成便于信息存储和检索的操作单元；(2)从原始信息生成二次信息，如描述、标注和编目数据；(3)为了有效和高效地利用信息，在一次信息和二次信息之间建立合理的联系。作为人体运动数据信息组织的一个案例，研究者对经典芭蕾舞动作进行了深入的研究。(1)为了将原始数据转换为原始信息，使用动作捕捉系统采集专业芭蕾舞演员的3D动作数据，并使用芭蕾舞技术格式对数据进行分割。调查人员对基本课范围内的芭蕾舞基本动作进行了详尽的分类，并对84个基本姿势和583个基本步骤进行了分级分类。(2)为了生成芭蕾舞动作的描述，研究者提出了一种新的描述编码系统。84个姿势和583个步骤被赋予了唯一的助记码。在此基础上，提出了芭蕾舞课编排短片的标注方法，并开发了一个基于Web的动作数据库和3DCG编排仿真系统--Web3D Dance Composer。该档案积累了分割后的芭蕾舞基本舞步的3D人体运动数据。该系统允许芭蕾舞教师为课程创建各种编排，并在网络环境中将其呈现为3DCG动画。

The purpose of this project is to discuss and examine the method to organize. human motion data with the goal of building a human motion database and its retrieval system.The general operation of information organization requires three processes; (1)to convert raw data to primary information which must be segmented into manipulated units for the benefit of information storage and retrieval; (2)to generate secondary information from primary one, such as description, annotation, and cataloging data; (3)to make reasonable linkage between primary information and secondary one for effective and efficient use of information. As a case study of information organization for human motion data, the investigator has studied classical ballet movements thoroughly. (1)To convert raw data into primary information, 3D motion data were captured from demonstrations of professional ballet dancers using motion capture systems, and the data were segmented with the help of ballet technique format. The investigator made exhaustive catalog of ballet basic movements within the scope of elementary lesson, and 84 basic poses and 583 basic steps were identified and classified hierarchically for the segmentation. (2)To generate description of ballet movements, the investigator proposes a new description coding system. 84 poses and 583 steps were given mnemonic codes uniquely. Furthermore the notation method for short choreographies of ballet lessons is proposed.A Web-based motion data archive and 3DCG choreography simulation system, which is called "Web3D Dance Composer," have been also developed. The archive has accumulated 3D human motion data of basic ballet steps segmented. The system allows ballet teachers to create various choreographies for lessons and to represent them as 3DCG animations in the Web environment.