Historical buildings play an important role in cultural heritage scenario: their main value is due overall to age, artistic and structural features and to surrounding environment.A study for monitoring and analyzing building structure becomes of easy approach, thanks to periodical testing of its level of safety which can be obtained through modern geo-technologies, referring to non-contact, often automatic, metric sensors. Rehabilitation and maintenance of historical architecture includes reinforcement of configuration, adjustment of geometry and other technical procedures. The 3D laser scanning technology is one of the important techniques methods to acquire spatial data. It scans the architecture of the objective point by point in very short time; records and create point clouds to simulate the shape by computer; reconstructs 3D model with high accuracy. A 3D scanner is a device that analyzes a real-world object or environment to collect data on its shape and possibly its appearance (i.e. color). The collected data can then be used to construct digital three dimensional models useful for a wide variety of applications. These devices are used extensively by the entertainment industry in the production of movies and video games. Other common applications of this technology include industrial design, orthotics and prosthetics, reverse engineering and prototyping, quality control/inspection and documentation of cultural artifacts. The combined use of 3D scanning and 3D printing technologies allows the replication of real objects without the use of traditionalplaster casting techniques, that in many cases can be too invasive for being performed on precious or delicate cultural heritage artifacts. The resulting digital 3D model, shown in the screen of the laptop, was used by a rapid prototyping machine to create a real resin replica of original object.This method is especially fit for surveying historical architecture heritage with lack of construction records. This paper presents a study case regarding different practical projects for 3D scanning of historical buildings in Timisoara.

monitoring building; urban planning; 3D laser scanning

Presentation: oral