scholarly journals 3D Information System of Historical Site – Proposal and Realisation of a Functional Prototype

10.14311/672 ◽  
2005 ◽  
Vol 45 (1) ◽  
Author(s):  
J. Hodač
Keyword(s):  
Information Technologies ◽  
3D Model ◽  
Essential Feature ◽  
3D Models ◽  
Appropriate Technology ◽  
Technical Solution ◽  
3D Data ◽  
Historical Sites ◽  
Functional Prototype ◽  
3D Information

The development of methods for 3D data acquisition, together with progress in information technologies raises the question of creating and using 3D models and 3D information systems (IS) of historical sites and buildings. This paper presents the current state of the “Live Theatre” project. The theme of the project is the proposal and realisation of a 3D IS of the baroque theatre at Eeský Krumlov castle (UNESCO site).The project is divided into three main stages – creation of a 3D model, proposal of a conception for a 3D IS, and realisation of a functional prototype. 3D data was acquired by means of photogrammetric and surveying methods. An accurate 3D model (photo-realistic, textured) was built up with MicroStation CAD system. The proposal of a conception of a 3D IS was the main outcome of the author’s dissertation. The essential feature of the proposed conception is the creation of subsystems targeted on three spheres – management, research and presentation of the site. The functionality of each subsystem is connected with its related sphere; however, each subsystem uses the same database. The present stage of the project involves making a functional prototype (with sample data). During this stage we are working on several basic technological topics. At present we are concerned with 3D data, its formats, format conversions (e.g. DGN _ VRML) and its connection to other types of data. After that, we will be seeking a convenient technical solution based on network technologies (Internet) and an appropriate layout for the data (database). The project is being carried out in close co-operation with the administration of the castle and some other partners. This stage of the project will be completed in December 2005.A functional prototype and the information acquired by testing it will form the basis for the final proposal of a complex IS of a historical site. The final proposal and appropriate technology will be the outcome of the project. The realisation of a complex 3D IS will then follow. The results will be exploitable both for site management and for organisations working in the area of presenting historical sites and creating multimedia shows. 

scholarly journals A New 3D Model Retrieval Method with Building Blocks

2009 ◽  
Vol 2009 ◽  
pp. 1-6 ◽  
Author(s):  
Mingquan Zhou ◽  
Qingsong Huo ◽  
Guohua Geng ◽  
Xiaojing Liu
Keyword(s):  
3D Model ◽  
Building Blocks ◽  
3D Models ◽  
3D Model Retrieval ◽  
Virtual Space ◽  
3D Data ◽  
Model Retrieval ◽  
Voxel Model ◽  
Interactive 3D ◽  
Application Fields

As the numbers of 3D models available grow in many application fields, there is an increasing need for a search method to help people find them. Unfortunately, traditional search techniques are not always effective for 3D data. In this paper, we describe a novel method of interactive 3D model retrieval with building blocks. First, by using a cube block as the baseblock in a 3D virtual space, we may construct the query model with human-computer interaction method. Then through retrieving the polygon model of the database generated by the voxel model, we may get retrieval results in real time. Experiments are conducted to evaluate the performance of the proposed method.

scholarly journals VIRTUAL MUSEUMS – THE FUTURE OF HISTORICAL MONUMENTS DOCUMENTATION AND VISUALIZATION

2019 ◽  
Vol XLII-2/W15 ◽  
pp. 903-908 ◽  
Author(s):  
K. Pavelka jr. ◽  
P. Raeva
Keyword(s):  
3D Model ◽  
Technology Development ◽  
3D Models ◽  
Appropriate Technology ◽  
Historical Monuments ◽  
The Future ◽  
Long Time ◽  
Historical Objects ◽  
In The Beginning ◽  
Beta Version

<p><strong>Abstract.</strong> Technology development now allows us to display the virtual reality (VR) world in a relatively high quality. VR is beginning to be used in many fields and getting many uses. This technology will be used more and more in the future and photogrammetry will not be an exception. For a long time, it has not been possible to present models in any other interesting form than in simple 3D model viewers or directly in the software where this model was built. In our case, this technology was used to create a beta version of a virtual museum that includes, in the beginning, some historical objects documented last year with appropriate technology which allows the transfer of models directly to the VR world. All the models that were presented in the museum had been created from aerial or ground photos, and some of them had been created by a combination of both technologies or in combination with laser scanned data. If we want to use 3D models from photogrammetry, which gets us a realistic copy of a documented object, it is necessary to optimize the photogrammetrical technology for the VR use. The paper introduces all steps of the workflow of how we can obtain a model which could be applicate in VR.</p>

scholarly journals Applicability Assessments of Close-Range Photogrammetry for Slope Face 3D Modelling

2020 ◽  
Vol 8 (3) ◽  
pp. 143-150
Author(s):  
Haqul Baramsyah ◽  
Less Rich
Keyword(s):  
Laser Scanning ◽  
3D Model ◽  
Laser Scanner ◽  
Cost Effective ◽  
3D Models ◽  
Digital Photogrammetry ◽  
Aerial Photogrammetry ◽  
3D Data ◽  
Image Capturing ◽  
Close Range

The digital single lens reflex (DSLR) cameras have been widely accepted to use in slope face photogrammetry rather than the expensive metric camera used for aerial photogrammetry. 3D models generated from digital photogrammetry can approach those generated from terrestrial laser scanning in term of scale and level of detail. It is cost effective and has equipment portability. This paper presents and discusses the applicability of close-range digital photogrammetry to produce 3D models of rock slope faces. Five experiments of image capturing method were conducted to capture the photographs as the input data for processing. As a consideration, the appropriate baseline lengths to capture the slope face to get better result are around 1/6 to 1/8 of target distance.  A fine quality of 3D model from data processing is obtained using strip method and convergent method with 80% overlapping in each photograph. A random camera positions with different distances from the slope face can also generate a good 3D model, however the entire target should be captured in each photograph. The accuracy of the models is generated by comparing the 3D models produced from photogrammetry with the 3D data obtained from laser scanner. The accuracy of 3D models is quite satisfactory with the mean error range from 0.008 to 0.018 m.

scholarly journals 3D DOCUMENTATION AND DATA MANAGEMENT IN THE DAZU THOUSAND-HAND BODHISATTVA STATUE IN CHINA

2016 ◽  
Vol XLI-B5 ◽  
pp. 273-276
Author(s):  
M. L. Hou ◽  
Y. G. Hu ◽  
Y. H. Wu ◽  
X. S. Zhao
Keyword(s):  
Data Management ◽  
Data Retrieval ◽  
3D Models ◽  
Scientific Basis ◽  
3D Data ◽  
Different Types ◽  
Data Problem ◽  
3D Documentation ◽  
3D Information ◽  
Cultural Relics

Recently different types 3D data of many cultural heritage are collected, however, how to store and manage these data problem. This paper presents a new solution regarding cultural 3D information fine reconstruction and data management based on 3D modeling. These data were stored with the file system and database, which improved the efficiency of data retrieval; on this basis, hyper-fine 3D models of cultural relics were established. Fine 3D information model based on this method can be used for 3D statistics, virtual restoration and change detection, etc. It can provide a scientific basis for the field of conservation and restoration of cultural relics, but can also provide a reference for fine 3D reconstruction to be applied to other cultural relics. Finally, the Dazu Thousand-hand Bodhisattva has been taken as an example, which verified the feasibility and effectiveness of the program.

scholarly journals Specifications and Standards for Insect 3D Data

2018 ◽  
Vol 2 ◽  
pp. e26561
Author(s):  
Jiangning Wang ◽  
Jing Ren ◽  
Tianyu Xi ◽  
Siqin Ge ◽  
Liqiang Ji
Keyword(s):  
3D Reconstruction ◽  
3D Model ◽  
Model Building ◽  
3D Models ◽  
Model Specification ◽  
Specimen Preparation ◽  
Reconstruction Process ◽  
Specimen Collection ◽  
3D Data ◽  
Imaging Results

With the continuous development of imaging technology, the amount of insect 3D data is increasing, but research on data management is still virtually non-existent. This paper will discuss the specifications and standards relevant to the process of insect 3D data acquisition, processing and analysis. The collection of 3D data of insects includes specimen collection, sample preparation, image scanning specifications and 3D model specification. The specimen collection information uses existing biodiversity information standards such as Darwin Core. However, the 3D scanning process contains unique specifications for specimen preparation, depending on the scanning equipment, to achieve the best imaging results. Data processing of 3D images includes 3D reconstruction, tagging morphological structures (such as muscle and skeleton), and 3D model building. There are different algorithms in the 3D reconstruction process, but the processing results generally follow DICOM (Digital Imaging and Communications in Medicine) standards. There is no available standard for marking morphological structures, because this process is currently executed by individual researchers who create operational specifications according to their own needs. 3D models have specific file specifications, such as object files (https://en.wikipedia.org/wiki/Wavefront_.obj_file) and 3D max format (https://en.wikipedia.org/wiki/.3ds), which are widely used at present. There are only some simple tools for analysis of three-dimensional data and there are no specific standards or specifications in Audubon Core (https://terms.tdwg.org/wiki/Audubon_Core), the TDWG standard for biodiversity-related multi-media. There are very few 3D databases of animals at this time. Most of insect 3D data are created by individual entomologists and are not even stored in databases. Specifications for the management of insect 3D data need to be established step-by-step. Based on our attempt to construct a database of 3D insect data, we preliminarily discuss the necessary specifications.

scholarly journals Use of Artificial Intelligence in the Field of Sustainable Architecture: Current Knowledge

2021 ◽  
Vol 26 (1) ◽  
pp. 20-29
Author(s):  
Veronika Krausková ◽  
Henrich Pifko
Keyword(s):  
Artificial Intelligence ◽  
Information Technologies ◽  
3D Model ◽  
Current Knowledge ◽  
3D Models ◽  
Critical Studies ◽  
Amount Of Information ◽  
Building Management ◽  
Building Information ◽  
2D Drawing

Abstract Innovative technologies help automate the work of the designer. A 3D model of the building can be used to calculate the required values. This will also allow you to create associative sections that, when changing the geometry of the 3D model, automatically adjust the drawn elements on the resulting 2D drawing. Information technologies enable participants from all over the world to work on one project and, thanks to the BIM (building information modelling) method, to design buildings during their life cycle more efficiently. At present, critical studies are published on interoper-ability in BIM and its lack of coordination or amount of information that is misinterpreted, etc. However, working in BIM is the most effective way to use computer technology to design buildings. There is a lot of information about the building in the 3D model itself, which can also be used for purposes other than construction (building management, reconstruction). But how to process a large amount of information in a 3D model? Many buildings already have their 3D models shared on cloud platforms, these contain information that could help, for example, find solutions for green construction using artificial intelligence (AI). We meet with AI every day. It supports internet search engines, predicts auto-completion words as you type. AI can also be found in architecture – not only as visions at exhibitions, but also in research on process optimization in BIM.

scholarly journals LIGHT FIELD CAMERA AS TOOL FOR FORENSIC PHOTOGRAMMETRY

2018 ◽  
Vol XLII-1 ◽  
pp. 393-399 ◽  
Author(s):  
T. Sieberth ◽  
R. Wackrow ◽  
V. Hofer ◽  
V. Barrera
Keyword(s):  
Light Intensity ◽  
Laser Scanning ◽  
Light Field ◽  
3D Model ◽  
Crime Scene ◽  
Depth Image ◽  
Additional Information ◽  
3D Data ◽  
Light Rays ◽  
3D Information

<p><strong>Abstract.</strong> Light field cameras record both the light intensity received by the sensor and the direction in which the light rays are travelling through space. Recording the additional information of the direction of Light rays provides the opportunity to refocus an image after acquisition. Furthermore, a depth image can be created, providing 3D information for each image pixel. Both, focused images and 3D information are relevant for forensic investigations. Basic overview images are often acquired by photographic novices and under difficult conditions, which make refocusing of images a useful feature to enhance information for documentation purposes. Besides focused images, it can also be useful to have 3D data of an incident scene. Capital crime scenes such as homicide are usually documented in 3D using laser scanning. However, not every crime scene can be identified as capital crime scene straight away but only in the course of the investigation, making 3D data acquisition of the discovery situation impossible. If this is the case, light field images taken during the discovery of the scene can provide substantial 3D data. We will present how light field images are refocused and used to perform photogrammetric reconstruction of a scene and compare the generated 3D model to standard photogrammetry and laser scanning data. The results show that refocused light field images used for photogrammetry can improve the photogrammetry result and aid photogrammetric processing.</p>

scholarly journals 3D Digital Representation of Cadastral Data in Turkey—Apartments Case

Land ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 179 ◽  
Author(s):  
Fatih Döner ◽  
Samet Şirin
Keyword(s):  
Information Technologies ◽  
Three Dimensional ◽  
3D Models ◽  
Point Of View ◽  
Digital Representation ◽  
Legal Information ◽  
Organizational Settings ◽  
Geographic Information Technologies ◽  
3D Data ◽  
City Models

With the widespread use of three-dimensional (3D) geographic information technologies, studies for 3D digital representation of property units in cadasters have increased in recent years. In Turkey, a project named 3D City Models and Cadasters was initiated by the General Directorate of Land Registries and Cadasters in 2018. With this project, which is planned to last four years, it aims to create 3D models of individual units (apartments) in buildings and provide visual representations of these individual units with legal information. Transition from the current 2D representation towards a 3D digital cadaster requires not only replacing analog drawings with 3D models but also examining the workflow for forming the property units. In this study, the process of registration of property rights for individual units is examined and possibilities and challenges for successful completion of the 3D cadaster project are evaluated from a legal, an organizational, and a technical point of view. Government plays a lead role by adopting the digital transformation as a state policy. However, new regulations and organizational settings may have to be introduced. Modeling and visualization alternatives for 3D data should be studied further.

scholarly journals 3D DOCUMENTATION AND DATA MANAGEMENT IN THE DAZU THOUSAND-HAND BODHISATTVA STATUE IN CHINA

2016 ◽  
Vol XLI-B5 ◽  
pp. 273-276 ◽  
Author(s):  
M. L. Hou ◽  
Y. G. Hu ◽  
Y. H. Wu ◽  
X. S. Zhao
Keyword(s):  
Data Management ◽  
Data Retrieval ◽  
3D Models ◽  
Scientific Basis ◽  
3D Data ◽  
Different Types ◽  
Data Problem ◽  
3D Documentation ◽  
3D Information ◽  
Cultural Relics

Recently different types 3D data of many cultural heritage are collected, however, how to store and manage these data problem. This paper presents a new solution regarding cultural 3D information fine reconstruction and data management based on 3D modeling. These data were stored with the file system and database, which improved the efficiency of data retrieval; on this basis, hyper-fine 3D models of cultural relics were established. Fine 3D information model based on this method can be used for 3D statistics, virtual restoration and change detection, etc. It can provide a scientific basis for the field of conservation and restoration of cultural relics, but can also provide a reference for fine 3D reconstruction to be applied to other cultural relics. Finally, the Dazu Thousand-hand Bodhisattva has been taken as an example, which verified the feasibility and effectiveness of the program.

Application of 3D Bridge Information Modeling in the Life-cycle of Bridges

2019 ◽  
Author(s):  
Afshin Hatami ◽  
Alex Mabrich
Keyword(s):  
3D Model ◽  
Structural Model ◽  
New Technology ◽  
3D Models ◽  
Information Modeling ◽  
Design Quality ◽  
Improve Design ◽  
Information Models ◽  
Building Information ◽  
3D Information

<p>Building information modeling (BIM) is a new technology in the bridge construction industry. 3D models can provide perfect numerical expression of drawings from design results. 3D information models for bridge structures improve design quality in terms of accurate drawings, constructability, and collaboration. However, there are lots of challenges to apply these techniques to actual bridge projects. For instance, bridge engineers are facing the challenge of making the vast information generated by their structural model useful for professionals further down the line in the lifecycle of the bridge. Contractors and inspectors require a 3D model which is created after the design process to add extra information related to activities and store that information in the same model. In this paper, technologies available to generate, manage, and enrich the bridge 3D model with intelligent information from construction to design and inspection are proposed.</p>

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