Execution schedule and 2D drawings are generally used for hazards identification in the construction safety planning process. Planner visualises 2D drawings into a 3D model and mentally links its components with the respective activities defined in the schedule to understand the execution sequence in safety planning. Sequence interpretation and accordingly the hazards identification vary with t...

The first results of the research in course are presented here, concerning the specification guide on georeferencing cultural heritage which is part of the Regione Lombardia (Lombardy Region) Risk Map related to the advanced concept of georeference through the use of historical maps and historical 3Dviews in GIS approach applied to the specific case of historical sites. The georeferencing, as c...

Performing precision monitoring for changes to seafloor topography is necessary to accurately examine the state of accidents of all sorts on the coast. Thus, this study proposed a new change detection technique to monitor changes to seafloor topography by systemizing the post-processing technique for MBES sounding data and 3D modeling technique. This study also applied the proposed technique to...

Finding the similarity between paths is an important problem that comes up in many areas such as 3D modeling, GIS applications, ordering, and reachability. Given a set of points S, a polygonal curve P , and an ε > 0, the discrete set-chain matching problem is to find another polygonal curve Q such that the nodes of Q are points in S and dF (P,Q) ≤ ε. Here, dF is the discrete Fréchet distance be...

In GIS, different types of data structures have been proposed in order to represent 3D models and examining the relationship between spatial objects. The Dual Half-Edge (DHE) is a data structure that permits the simultaneous representation of the geometry and topology of models with a special focus on building interiors. In this paper, from the storage cost point of view, the G-Maps model is an...

In spite of the widespread use of the Internet, its potential for facilitating public involvement in urban planning projects has not yet been exploited. In this paper, the possibilities and limitations of integrating GIS, CG and the WWW for facilitating the public involvement in urban landscape evaluation are discussed. It is proposed that off-the-shelf 2D GIS and 3D CAD software can be efficie...

We present a 3D modeling approach to reconstruct urban facades with map constraints. Our main constribution is to use GIS data to filter the points cloud to improve the reconstruction process. The method’s input is a ground-view video sequence captured by a common webcam. We extract original feature points cloud by using structure-from-motion technique. First, the footprint from GIS enables us ...

This paper presents 3D-EPUG-OVERLAY, an exact and parallel algorithm for computing the intersection of 3D triangulated meshes, a problem with applications in several fields such as GIS and CAD. 3D-EPUG-OVERLAY presents several innovations: it employs exact arithmetic and, thus, the computations are completely exact, which avoids topological impossibilities that are often created by floating poi...

Qualitative spatial reasoning is an important function of the human brain. Artificial systems that can perform such reasoning have many applications such as Geographic Information Systems (GIS), robotics, biomedicine, and engineering. Automation of such analytical processes alleviates manual labor, and may increase the accuracy of the spatial assessments because the reasoning can be done object...

This Paper describes a hybrid system on 3D city modeling, data management and visualization component for 3D GIS infrastructure. The framework obtained high efficiency, without compromising the detail and accuracy of the result .The method utilize multi source data – digital camera and laser scanner to provide data redundancy required by automation. Classification and segmentation can be proces...