Photogrammetry versus 3D scanner: producing 3D models of museums' artifacts (original) (raw)
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3D SCANNING TECHNIQUES AND PRACTICES USED FOR DIFFERENT TYPES OF ARCHAEOLOGICAL ARTIFACTS
The extensive experimental studies were carried out for scanning archaeological artifacts of different types within the framework of the project aimed at establishing the virtual 3D museum of artifacts "Ancient Culture of Siberia" to be implemented by the Laboratory for Social and Anthropological Research. The choice of specific equipment and scanning techniques was determined in each case by a research task and characteristics of objects to be scanned. The 3D scanning techniques for ceramic vessels of different sizes and ornamentation types, miniature anthropomorphic images, stone Turkic sculptures, and wooden ship details are described herein in detail. All of the generated 3D models are presented in the electronic supplement to this journal.
ARCE annual meeting , 2018
Photogrammetry is the art and science of deriving accurate 3D metric and descriptive object information from multiple analogue and digital images. Concerned with deriving measurements of the size, shape, position and texture of objects from measurements made on photographs, it can be used to create 3D models of buildings or objects by overlapping images using photogrammetric software and creating point clouds that are translated into a 3D mesh. Any camera can be used for photogrammetric purposes, from low-cost to high-end large format metric cameras. There is an increasing interest in utilizing this imagery in different fields such as archaeology, architecture and mechanical inspection. The aim of this paper is to show the results of a project utilizing digital photogrammetry methodology at different sites in Alexandria, Egypt and its promising application in archaeology. The paper describes a study in which photogrammetry methods and digital modelling techniques were used to obtain a threedimensional digital model based on maps and plans, either as elevations, facades and/or contours, and the relevance of this technology in the documentation, conservation and safeguarding of archaeological sites. The importance of using 3D scanning data sets to reveal otherwise invisible information at archaeological sites that are affected by decay processes, and which frequently endanger the last vestiges of some peoples and cultures will additionally be highlighted.
Studies in Digital Heritage, 2017
The MUSINT II project was created to publicize and promote Minoan glyptic, a little-known archaeological heritage. Its contents were designed to involve both specialists and the general public (adults and children). The project focuses on the 3D digitalization of seventeen very small (ca. 15 mm diameter) seals, stored in the archives of the National Archaeological Museum of Florence. The digitalization of these artifacts required both a high-quality resolution technique capable of capturing their morphology and decorative motifs and also that the resulting 3D models were appealing to the target audience. For this reason, an approach based on Structure from Motion (SfM) photogrammetry was chosen. This technology makes it possible to obtain three-dimensional reproductions from photographs made by non-dedicated devices, but the tiny-object survey required specific instruments and skills in order to be scanned in such a way as to acquire a high quality and shadow-free texture. The macro photography technique was applied together with a specific workflow to obtain high quality photogrammetric models and to save time in acquiring and processing images. With this methodology, 3D models of high metric precision mesh and maximum color fidelity textures were obtained in the Agisoft Photoscan software. This process delivers results with high level detail for low costs and minimal acquisition and processing time (ca. four hours).
The potential of 3D techniques for cultural heritage object documentation
Videometrics IX, 2007
The generation of 3D models of objects has become an important research point in many fields of application like industrial inspection, robotics, navigation and body scanning. Recently the techniques for generating photo-textured 3D digital models have interested also the field of Cultural Heritage, due to their capability to combine high precision metrical information with a qualitative and photographic description of the objects. In fact this kind of product is a fundamental support for documentation, studying and restoration of works of art, until a production of replicas by fast prototyping techniques. Close-range photogrammetric techniques are nowadays more and more frequently used for the generation of precise 3D models. With the advent of automated procedures and fully digital products in the 1990s, it has become easier to use and cheaper, and nowadays a wide range of commercial software is available to calibrate, orient and reconstruct objects from images. This paper presents the complete process for the derivation of a photorealistic 3D model of an important basalt stela (about 70 x 60 x 25 cm) discovered in the archaeological site of Tilmen Höyük, in Turkey, dating back to 2 nd mill. BC. We will report the modeling performed using passive and active sensors and the comparison of the achieved results.
The potential of 3D techniques for cultural heritage object documentation
2007
The generation of 3D models of objects has become an important research point in many fields of application like industrial inspection, robotics, navigation and body scanning. Recently the techniques for generating photo-textured 3D digital models have interested also the field of Cultural Heritage, due to their capability to combine high precision metrical information with a qualitative and photographic description of the objects. In fact this kind of product is a fundamental support for documentation, studying and restoration of works of art, until a production of replicas by fast prototyping techniques. Close-range photogrammetric techniques are nowadays more and more frequently used for the generation of precise 3D models. With the advent of automated procedures and fully digital products in the 1990s, it has become easier to use and cheaper, and nowadays a wide range of commercial software is available to calibrate, orient and reconstruct objects from images. This paper presents the complete process for the derivation of a photorealistic 3D model of an important basalt stela (about 70 x 60 x 25 cm) discovered in the archaeological site of Tilmen Höyük, in Turkey, dating back to 2nd mill. BC. We will report the modeling performed using passive and active sensors and the comparison of the achieved results.
Three Dimensional Modeling of Archaeological Artifact Using Photomodeler Scanner
Jurnal Teknologi, 2015
This article describes the work of archaeological artifact data recording using close range photogrammetry method. A calibrated stereo camera was used to take the stereo images of the artifacts. Photomodeler Scanner software was used to process the stereo images to produce a three-dimensional model of the artifact. For verification purposes, VIVID 910 laser scanner was used to generate three-dimensional model of the same artifact. The study found that close range photogrammetry method is easy to use, with fast data recording, fast data processing and it is a method which is cheaper than the laser scanning method.
Geoinformatics FCE CTU, 2013
Nowadays, there are two main approaches to cultural heritage documentation: a precise documentation by several techniques such as professional close range photogrammetry, classical geodetical measurement and 3D scanning, or a simple documentation using non expensive devices and instruments, often based on free software. In many projects it is not possible to use precise and expensive instruments for time, transportational, financial and authoritative permission reasons. At the Laboratory of Photogrammetry at the CTU Prague, we are focused on both types of documentation and the necessary visualisation of outputs; the long-term and very important aim of our research in this field is to develop small, inexpensive devices and test appropriate technology for the 3D documentation of cultural heritage objects. There is our prototype of an optical correlation system, which uses a motorised calibrated digital camera on a linear base. The second part shows several open source photogrammetric...
Studies in Digital Heritage, 2017
The MUSINT II project was created to publicize and promote the Minoan glyptic, a little-known archaeological heritage. Its contents were designed to involve both specialists and a general public (adults and children).The project focuses on the 3D digitalization of seventeen very small (about 15mm diameter) seals, stored in the archives of the National Archaeological Museum of Florence.The digitalization of these artifacts required a high-quality resolution technique capable of capturing their morphology and decorative motives and, at the same time, appeal to the educational targets.For this reason, the Structure from Motion (SfM) Photogrammetry was chosen. This technology makes it possible to obtain three-dimensional reproductions from random photographs made by non-dedicated devices, but the tiny-object survey required specific instruments and skills.A macrophotography technique was applied together with a specific workflow to obtain high quality photogrammetric models and to save ...