We presented two integrated solution schemes, sectional feature based strategy and surface feature based strategy, for modeling industrial components from point cloud to surfaces without using triangulation. For the sectional feature based strategy, slicing, curve feature recognition and constrained fitting are introduced. This strategy emphasizes the advanced feature architecture patterns from...

A (δ, g)-cage is a δ-regular graph with girth g and with the least possible number of vertices. In this paper, we show that all (δ, g)-cages with odd girth g ≥ 9 are r-connected, where (r − 1) ≤ δ + √ δ − 2 < r and all (δ, g)-cages with even girth g ≥ 10 are r-connected, where r is the largest integer satisfying r(r−1) 2 4 + 1 + 2r(r − 1) ≤ δ. Those results support a conjecture of Fu, Huang and...

Abstract. HBIM methodology is increasingly used for the management of all aspects architectural heritage, from survey and analysis to conservation, restoration issues.Application are so-called Scan-to-BIM processes in which artifact surveyed with digital techniques laser scanning photogrammetry. These result point clouds, basis subsequent process informative geometric modelling artifact. The re...

Drawing, modeling and the explicit abstraction embedded in the traditions and conventions of visual communication through composition and representation are fundamental to the how, why and what of architectural design. BIM presents simulation as an antiabstract means of visual communication that seeks to displace the discreet representation of plan, section and elevation with the intelligent ob...

In most requirements engineering and software architecture documents, emphasis is placed on the chosen alternative. The discarded ones, and the arguments that led to a particular choice, are often not explicitly recorded and documented. This makes it difficult to retrace decisions and explore alternatives. We have developed a representation for capturing quality requirements and associated arch...