Based on building footprints (building polygons) on digital maps, we are proposing the GIS and CG integrated system that automatically generates 3D building models with multiple roofs. Most building polygons’ edges m...Based on building footprints (building polygons) on digital maps, we are proposing the GIS and CG integrated system that automatically generates 3D building models with multiple roofs. Most building polygons’ edges meet at right angles (orthogonal polygon). The integrated system partitions orthogonal building polygons into a set of rectangles and places rectangular roofs and box-shaped building bodies on these rectangles. In order to partition an orthogonal polygon, we proposed a useful polygon expression in deciding from which vertex a dividing line is drawn. In this paper, we propose a new scheme for partitioning building polygons and show the process of creating 3D roof models.展开更多
建筑工程合规性审查是确保设计或施工方案满足规范,建设绿色、安全、舒适的工程的关键环节。传统人工核对方式对人员的经验及其水平要求高,存在尺度不一、低效漏项、人为操控等弊端。该文对近年来合规性自动审查的有关研究应用作了全面...建筑工程合规性审查是确保设计或施工方案满足规范,建设绿色、安全、舒适的工程的关键环节。传统人工核对方式对人员的经验及其水平要求高,存在尺度不一、低效漏项、人为操控等弊端。该文对近年来合规性自动审查的有关研究应用作了全面调研和综述,建立了基于建筑信息模型(building information model,BIM)的合规性自动审查研究框架,并从审查规则解译表达、信息建模扩展、规则推理执行及结果输出表现等方面综述了研究现状和不足之处。最后,指出合规性自动审查的研究方兴未艾,尽管已取得了丰硕的成果,但是仍面临信息模型异构和语义鸿沟,规则自动解译和开放、灵活共享,复杂空间关系分析和大规模推理等巨大挑战。展开更多
文摘Based on building footprints (building polygons) on digital maps, we are proposing the GIS and CG integrated system that automatically generates 3D building models with multiple roofs. Most building polygons’ edges meet at right angles (orthogonal polygon). The integrated system partitions orthogonal building polygons into a set of rectangles and places rectangular roofs and box-shaped building bodies on these rectangles. In order to partition an orthogonal polygon, we proposed a useful polygon expression in deciding from which vertex a dividing line is drawn. In this paper, we propose a new scheme for partitioning building polygons and show the process of creating 3D roof models.
文摘建筑工程合规性审查是确保设计或施工方案满足规范,建设绿色、安全、舒适的工程的关键环节。传统人工核对方式对人员的经验及其水平要求高,存在尺度不一、低效漏项、人为操控等弊端。该文对近年来合规性自动审查的有关研究应用作了全面调研和综述,建立了基于建筑信息模型(building information model,BIM)的合规性自动审查研究框架,并从审查规则解译表达、信息建模扩展、规则推理执行及结果输出表现等方面综述了研究现状和不足之处。最后,指出合规性自动审查的研究方兴未艾,尽管已取得了丰硕的成果,但是仍面临信息模型异构和语义鸿沟,规则自动解译和开放、灵活共享,复杂空间关系分析和大规模推理等巨大挑战。
