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首页> 外文期刊>International Journal of Computer Integrated Manufacturing >Structured metadata for representation, query and retrieval of behaviour models of virtual products
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Structured metadata for representation, query and retrieval of behaviour models of virtual products

机译：用于表示，查询和检索虚拟产品行为模型的结构化元数据

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摘要

Although the interactive three-dimensional visualization and intuitive interface offered by virtual reality (VR) technology are useful at various product development stages, the expensive and time-consuming process required to construct a VR model often hinders the widespread adoption of VR in industry. Fast and low-cost VR model construction is a critical factor for broader acceptance of VR technology in industry. Since many industrial products, e.g. products belonging to the same product family, have similar behaviours, it is reasonable to store the behaviour models of products and reuse them later. Behaviour query and retrieval, however, are not easy because of their complex composing data elements. This paper proposes a metadata-based approach for behaviour representation, query and retrieval. The metadata are designed by identifying the important objects in constructing a VRML-compliant behaviour model and designing representative metadata for these objects. The resulted metadata table captures three types of information: the operation units; the animation and interaction functions applied to the operation units; and the execution logics and sequences of these functions. The metadata table also provides a simple interface for VR programmer to define a query specification. Behaviour model retrieval is done by matching the query table against the metadata tables of existed behaviour models. The proposed metadata-based approach could be integrated with existing VR authoring systems to facilitate fast construction of virtual products.
机译：尽管虚拟现实（VR）技术提供的交互式三维可视化和直观界面在各个产品开发阶段都非常有用，但是构建VR模型所需的昂贵且耗时的过程通常会阻碍VR在业界的广泛采用。快速和低成本的VR模型构建是业界广泛接受VR技术的关键因素。由于许多工业产品，例如属于同一产品系列的产品具有相似的行为，因此合理的做法是存储产品的行为模型并在以后再使用。但是，行为查询和检索由于其组成数据元素复杂而并不容易。本文提出了一种基于元数据的行为表示，查询和检索方法。通过在构造兼容VRML的行为模型中确定重要对象并为这些对象设计代表性元数据来设计元数据。生成的元数据表捕获三种类型的信息：操作单元;应用于操作单元的动画和交互功能;以及这些功能的执行逻辑和顺序。元数据表还为VR程序员提供了一个简单的界面来定义查询规范。行为模型检索是通过将查询表与现有行为模型的元数据表进行匹配来完成的。所提出的基于元数据的方法可以与现有的VR创作系统集成，以促进虚拟产品的快速构建。

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