scholarly journals DEFORMATION MEASUREMENT USING TERRESTRIAL LASER SCANNER FOR CULTURAL HERITAGE

2016 ◽  
Vol XLII-2/W1 ◽  
pp. 89-93 ◽  
Author(s):  
M. O. Selbesoglu ◽  
T. Bakirman ◽  
O. Gokbayrak
Keyword(s):  
Cultural Heritage ◽  
Natural Hazards ◽  
Real World ◽  
Laser Scanner ◽  
Essential Element ◽  
High Accuracy ◽  
Cylindrical Part ◽  
Terrestrial Laser Scanner ◽  
Historical Structures ◽  
Digital Documentation

Historical structures are one of the most essential element of cultural heritage. They reflect history, lifestyle and tradition of a country and society. However, they are damaged through the years due to human activities and natural hazards. Therefore, digital documentation of structures and monuments is critical for preservation, sustainability and protection of cultural heritage. Terrestrial laser scanner is a widespread used tool for obtaining 3D representation of real world. In this study, we aimed to measure deformation of deformed minaret of a historical mosque using terrestrial laser scanner. In order to represent the geometry of the deformed minaret with high accuracy, 31 horizontal sections were created from the transition segment to the spire of the minaret with 30 cm intervals. The changing curvatures of the minaret were analysed in three parts; cylindrical part, balcony part and upper part. The offsets from the vertical axes for the parts of the minaret were found as 10.14 cm, 13.97 cm and 16.51 cm, respectively.

scholarly journals INTEGRATION OF GEOMATICS TECHNIQUES FOR DIGITIZING HIGHLY RELEVANT GEOLOGICAL AND CULTURAL HERITAGE SITES: THE CASE OF SAN LEO (ITALY)

2017 ◽  
Vol XLII-2/W5 ◽  
pp. 281-286 ◽  
Author(s):  
V. A. Girelli ◽  
L. Borgatti ◽  
M. Dellapasqua ◽  
E. Mandanici ◽  
M. C. Spreafico ◽  
...  
Keyword(s):  
Cultural Heritage ◽  
Large Scale ◽  
Laser Scanner ◽  
Terrestrial Laser Scanner ◽  
Heritage Sites ◽  
Research Activities ◽  
Dense Point ◽  
Geometrical Information ◽  
Historical Heritage ◽  
The Town

The research activities described in this contribution were carried out at San Leo (Italy). The town is located on the top of a quadrangular rock slab affected by a complex system of fractures and has a wealth of cultural heritage, as evidenced by the UNESCO’s nomination.<br><br> The management of this fragile set requires a comprehensive system of geometrical information to analyse and preserve all the geological and cultural features. In this perspective, the latest Geomatics techniques were used to perform some detailed surveys and to manage the great amount of acquired geometrical knowledge of both natural (the cliff) and historical heritage. All the data were also georeferenced in a unique reference system.<br><br> In particular, high accurate terrestrial laser scanner surveys were performed for the whole cliff, in order to obtain a dense point cloud useful for a large number of geological studies, among others the analyses of the last rockslide by comparing pre- and post-event data.<br><br> Moreover, the geometrical representation of the historical centre was performed using different approaches, in order to generate an accurate DTM and DSM of the site. For these purposes, a large scale numerical map was used, integrating the data with GNSS and laser surveys of the area.<br><br> Finally, many surveys were performed with different approaches on some of the most relevant monuments of the town. In fact, these surveys were performed by terrestrial laser scanner, light structured scanner and photogrammetry, the last mainly applied with the Structure from Motion approach.

Autonomous Mobile Robot Searching for Persons with Specific Clothing on Urban Walkway

2017 ◽  
Vol 29 (4) ◽  
pp. 649-659 ◽  
Author(s):  
Ryohsuke Mitsudome ◽  
◽  
Hisashi Date ◽  
Azumi Suzuki ◽  
Takashi Tsubouchi ◽  
...  
Keyword(s):  
Object Recognition ◽  
Mobile Robot ◽  
Real Time ◽  
Real World ◽  
Laser Scanner ◽  
High Accuracy ◽  
Autonomous Mobile Robot ◽  
World Environment

In order for a robot to provide service in a real world environment, it has to navigate safely and recognize the surroundings. We have participated in Tsukuba Challenge to develop a robot with robust navigation and accurate object recognition capabilities. To achieve navigation, we have introduced the ROS packages, and the robot was able to navigate without major collisions throughout the challenge. For object recognition, we used both a laser scanner and camera to recognize a person in specific clothing, in real time and with high accuracy. In this paper, we evaluate the accuracy of recognition and discuss how it can be improved.

scholarly journals An Automatic Tree Skeleton Extracting Method Based on Point Cloud of Terrestrial Laser Scanner

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Ronghao Li ◽  
Guochao Bu ◽  
Pei Wang
Keyword(s):  
Topological Structure ◽  
Point Cloud ◽  
Laser Scanner ◽  
High Accuracy ◽  
Terrestrial Laser Scanner ◽  
Peach Tree ◽  
Point Cloud Data ◽  
Breadth First Search ◽  
Cloud Data ◽  
Real Tree

Tree skeleton could describe the shape and topological structure of a tree, which are useful to forest researchers. Terrestrial laser scanner (TLS) can scan trees with high accuracy and speed to acquire the point cloud data, which could be used to extract tree skeletons. An adaptive extracting method of tree skeleton based on the point cloud data of TLS was proposed in this paper. The point cloud data were segmented by artificial filtration and k-means clustering, and the point cloud data of trunk and branches remained to extract skeleton. Then the skeleton nodes were calculated by using breadth first search (BFS) method, quantifying method, and clustering method. Based on their connectivity, the skeleton nodes were connected to generate the tree skeleton, which would be smoothed by using Laplace smoothing method. In this paper, the point cloud data of a toona tree and peach tree were used to test the proposed method and for comparing the proposed method with the shortest path method to illustrate the robustness and superiority of the method. The experimental results showed that the shape of tree skeleton extracted was consistent with the real tree, which showed the method proposed in the paper is effective and feasible.

scholarly journals BIM applied in historical building documentation and refurbishing

2015 ◽  
Vol XL-5/W7 ◽  
pp. 85-90 ◽  
Author(s):  
H.-M. Cheng ◽  
W.-B. Yang ◽  
Y.-N. Yen
Keyword(s):  
Cultural Heritage ◽  
Laser Scanning ◽  
Survey Methods ◽  
Laser Scanner ◽  
Complex Structures ◽  
Digital Information ◽  
Historical Building ◽  
Heritage Sites ◽  
Digital Documentation ◽  
Building Conservation

Historical building conservation raises two important issues which are documentation and refurbishing. For the recording and documentation, we already have developed 3d laser scanner and such photogrammetry technology those represent a freeze object of virtual reality by digital documentation. On the other hand, the refurbished engineering of historic building is a challenge for conservation heritage which are not only reconstructing the damage part but also restoring tangible cultural heritage. 3D digital cultural heritage models has become a topic of great interest in recent years. One reason for this is the more widespread use of laser scanning and photogrammetry for recording cultural heritage sites. These technologies have made it possible to efficiently and accurately record complex structures remotely that would not have been possible with previous survey methods. In addition to these developments, digital information systems are evolving for the presentation, analysis and archival of heritage documentation.

scholarly journals 3D TEXTURED MODELLING OF BOTH EXTERIOR AND INTERIOR OF KOREAN STYLED ARCHITECTURES

2017 ◽  
Vol XLII-2/W5 ◽  
pp. 439-442 ◽  
Author(s):  
J.-D. Lee ◽  
K.-J. Bhang ◽  
W. Schuhr
Keyword(s):  
Laser Scanning ◽  
Laser Scanner ◽  
3D Modelling ◽  
Deformation Monitoring ◽  
Terrestrial Laser Scanner ◽  
Cultural Assets ◽  
Modelling Procedure ◽  
Digital Documentation ◽  
Documentation Tool ◽  
Safety Diagnosis

This paper describes 3D modelling procedure of two Korean styled architectures which were performed through a series of processing from data acquired with the terrestrial laser scanner. These two case projects illustate the use of terrestrial laser scanner as a digital documentation tool for management, conservation and restoration of the cultural assets. We showed an approach to automate reconstruction of both the outside and inside models of a building from laser scanning data. Laser scanning technology is much more efficient than existing photogrammetry in measuring shape and constructing spatial database for preservation and restoration of cultural assets as well as for deformation monitoring and safety diagnosis of structures.

scholarly journals LASER SCANNER TECHNOLOGY, GROUND-PENETRATING RADAR AND AUGMENTED REALITY FOR THE SURVEY AND RECOVERY OF ARTISTIC, ARCHAEOLOGICAL AND CULTURAL HERITAGE

2017 ◽  
Vol IV-4/W4 ◽  
pp. 123-127
Author(s):  
V. Barrile ◽  
G. Bilotta ◽  
G. M. Meduri ◽  
D. De Carlo ◽  
A. Nunnari
Keyword(s):  
Virtual Reality ◽  
Augmented Reality ◽  
Cultural Heritage ◽  
Real World ◽  
Ground Penetrating Radar ◽  
Laser Scanner ◽  
Textual Information ◽  
Virtual Objects ◽  
Laser Scanners ◽  
Ground Penetrating

In this study, using technologies such as laser scanner and GPR it was desired to see their potential in the cultural heritage. Also with regard to the processing part we are compared the results obtained by the various commercial software and algorithms developed and implemented in Matlab. Moreover, Virtual Reality and Augmented Reality allow integrating the real world with historical-artistic information, laser scanners and georadar (GPR) data and virtual objects, virtually enriching it with multimedia elements, graphic and textual information accessible through smartphones and tablets.

High accuracy calibration of installation parameters between 3D terrestrial laser scanner and external-installed digital camera

2016 ◽  
Vol 24 (9) ◽  
pp. 2158-2166 ◽  
Author(s):  
李明磊 LI Ming-lei ◽  
高欣圆 GAO Xin-yuan ◽  
李广云 LI Guang-yun ◽  
王 力 WANG Li ◽  
刘松林 LIU Song-lin
Keyword(s):  
Laser Scanner ◽  
Digital Camera ◽  
High Accuracy ◽  
Terrestrial Laser Scanner
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