Information Processing Approach to Shapes of Japanese Ancient Tombs

1.对位于大阪和奈良两县的日本古代钥孔墓进行了调查，并更新了资料。因此，我们可以站在可靠的情况下，对墓葬的形状进行统计分析。引入主成分分析方法，找出对钥匙孔墓葬进行分类的两个有效的主成分。此外，实验表明，第一个分量与古墓的年代顺序有很强的相关性。在工作站上设计并实现了一个基于知识的交互式古墓修复系统。该系统名为ESRAT，以图表、表格和框架的形式存储上述统计知识。为了对修复后的古墓进行可视化处理，开发并实现了一个三维计算机图形学基础软件。该软件包括数据建模和光线跟踪算法两部分。实验建立了三维可视化的计算机环境。一些古墓的例子已经被修复和可视化。

1. Japanese ancient Keyhole tombs, located in Osaka and Nara Prefectures, have been surveyed and their data have also been updated. It follows that we can stand in a reliable situation for statistical analyses on shapes of the tombs.2. Principal components analysis has been introduced to find the two dominant components that are effective for classification of the Keyhole tombs. In addition, it has experimentally been shown that the first component is strongly correlated to the chronological order of the ancient tombs.3. An interactive knowledge-based system for restoration of the ancient tomb has been designed and implemented on a work station. This system, named ESRAT, stores the above statistical knowledge as charts, tables and frames.4. Aiming to visualize the restored ancient tombs, a basic software of 3D computer graphics has been developed and implememted. This software includes data modeling and ray-tracing algorithm. The computer environment for 3D visualization has experimentally been established. Some examples of the ancient tombs have already been restored and visualized.