B. Tepavčević, V. Stojaković, Automation in Construction, 2013. Vol. 35. pp.329‐33.
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Procedural Modeling in architecture based on statistical and fuzzy inference
Architectural heritage
Image-based surveying and modeling of the unprotected architectural heritage – a case study of st. Rudolf’s church
V. Stojaković, I. Bajšanski, 2013. Proceedings of XXIV Cipa Symosium – 2013, INSA, Strasbourg, France, pp. 295-300
Abstract: The aim of this paper is to present image-based recording of the unprotected architectural heritage in threat and its advantages integrating different modeling methods. Considering the construction problems in unprotected buildings we applied variations of low-budget image-based 3D modeling reconstructions techniques and built the complete virtual 3D reconstruction of highly damaged church of St. Rudolph in Banostor. The resulting model reveals many construction and design details that can not be perceived by a simple observing.
In this paper, the importance of integrating a variety of measuring and modeling methodologies in order to achieve digital reconstruction of the unapproachable ruined building is demonstrated. The paper describes survey techniques and workflow, focusing on advantages as well as problems and limitations of each method.
Online version of article: Image-based surveying and modeling of the unprotected architectural heritage – a case study of st. Rudolf’s church
Single Image Ambiguity and Adjustment of Cultural Heritage Modeling Approach
Stojaković V. and Tepavčević B., 2011. Education and Research in Computer Aided Architectural Design in Europe ‐ eCAADe Ljubljana, Slovenia, pp. 99‐106.
Abstract: The objective of this research is to point out the deficiency of the modeling from a single image and give suggestion for the improvement. In the domain of cultural heritage visualization, single image modeling is mainly used to recover the scene shown in the historical photographs. In this paper, some common ambiguities in the area of the historical architectural environments are highlighted. In most approaches user is the one to introduce and choose constraints, and therefore he must have control over the ambiguity problems. We propose suggestions about how to adjust the single-image-based modeling in order to minimize chance for irregular 3D shapes to emerge due to ambiguity. Simple examples are used to illustrate how ambiguity of a single image can affect the models veridicality, which are the common mistakes that inexperienced user can make and how and when they can be corrected.
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Single Image Ambiguity and Adjustment of Cultural Heritage Modeling Approach
Image‐based modeling approach in creating 3D morphogenetic reconstruction of Liberty Square in Novi Sad
Stojaković V. and Tepavčević B., 2011. Journal of Cultural Heritage. Vol12, Issue 1, pp.105‐110.
Abstract: In this paper, various methods were combined to create a morphogenetic reconstruction of Liberty Square in Novi Sad using photo documentation as input data. Three-dimensional morphogenetic reconstruction of the city square provides the most comprehensive way of tracking changes in its structure through relative time periods. Transformations of Liberty Square are followed from the year 1885 to present day. Through that period, Liberty Square has undergone dramatic changes in its shape and structure. Previous appearances of the square are known from preserved historical photographs and mapping documentation. Old photographs and new digitally captured images were combined through different modeling approaches in attempt to find the most efficient way to reconstruct characteristic development phases of the square. Existing objects are generated through the use of different styles of photogrammetric modeling; however, non-existing or modified objects are generated by application of historical photo restitution combined with 3D modeling. Adequate simultaneous usage of all methods provides optimal results.
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Virtual Reconstruction of Kljajicevo Chapel
V. Stojaković, R. Štulić, 2010. Virtual Reconstruction of Kljajicevo Chapel, Journal for Geometry and Graphic, Vol. 14, No 10, pp. 81-91
Abstract: Virtual reconstruction, as a three dimensional realistic representation, has many advantages in the cultural heritage data distribution and storage, especially in the case of devastated architectural objects. A procedure of virtual reconstructing of St Wendelin chapel in Kljajicevo is presented in this paper as a case study. Existing remains have been recorded using terrestrial photogrammetry. Spatial information and dimension of collapsed parts have been exported from old photographs by using perspective projection restitution methods. These two type of data are combined and used as a platform for 3D virtual reconstruction of object. Virtual reconstruction makes spatial data complete and ready for further research or data distribution.
Online version of article: Virtual Reconstruction of Kljajicevo Chapel
Optimal Methods for 3D Modeling of Devastated Architectural Objects
V. Stojaković, B. Tepavčević, 2009. International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXVIII-5/W1, ISPRS, Trento, Italy, pp. 1-6.
Abstract: In this research we define optimal methods for 3D representation of devastated architectural objects. Recording devastated objects consists of three phases: recording existing remains, recording collapsed parts of objects and combining these results into a complete model.
Optimal method for recording existing remains depends on the specific site conditions. Criteria for choosing optimal method can be divided into project criteria, economic criteria and object criteria. Project criteria relays on required type of representation which includes data quantity, quality and complexity. Economic criteria searches for method with least time and financial demands. Object criteria analyze if the defined type of objects is suitable for specific method. After complete analysis of numerous devastated sacral objects, it is determined that among manual measuring, photogrammetry and laser scanning, the terrestrial photogrammetry is the best method.
For recording of former object appearance, old photograph restitution is obviously the optimal method.
Combining photo restitution, terrestrial photogrammetry and modeling, virtual reconstructions of partly collapsed objects are created. Virtual reconstruction of devastated objects is a 3D model representing object as it looked before any damage.
Danube area of Vojvodina was entirely researched as case study . All catholic churches and chapels built in Vojvodina in 18th, 19th and first half of 20st century were recorded. For devastated objects virtual reconstructions were made. These models relay on 3D photogrammetry models of present remains combined with object volume data on old photographs or photographs of hardly approachable parts. Several typical object representatives are presented in this paper.
Online version of article: Optimal Methods for 3D Modeling of Devastated Architectural Objects