Imaging topological radar for 3D imaging in cultural heritage reproduction and restoration

2005 ◽  
Author(s):  
Claudio Poggi ◽  
Massimiliano Guarneri ◽  
Giorgio Fornetti ◽  
Mario Ferri de Collibus ◽  
Luigi De Dominicis ◽  
...  
Keyword(s):  
Cultural Heritage ◽  
3D Imaging

Automatic 3D Imaging and Modelling System with Color Information for Cultural Heritage Digitization

Fringe 2013 ◽  
2014 ◽  
pp. 821-826
Author(s):  
Xiaoli Liu ◽  
Xiang Peng ◽  
Dong He ◽  
Xingming Liu ◽  
Ameng Li ◽  
...  
Keyword(s):  
Cultural Heritage ◽  
3D Imaging ◽  
Color Information ◽  
Modelling System

scholarly journals Approach for identification of geometry change on cultural heritage surface

2021 ◽  
Keyword(s):  
Cultural Heritage ◽  
International Symposium ◽  
3D Imaging ◽  
Fast Track ◽  
Electronic Imaging

Fast track article for IS&T International Symposium on Electronic Imaging 2021: 3D Imaging and Applications 2021 proceedings.

scholarly journals SPECTRAL AND 3D CULTURAL HERITAGE DOCUMENTATION USING A MODIFIED CAMERA

2018 ◽  
Vol XLII-2 ◽  
pp. 1183-1190 ◽  
Author(s):  
E. K. Webb ◽  
S. Robson ◽  
L. MacDonald ◽  
D. Garside ◽  
R. Evans
Keyword(s):  
Image Quality ◽  
Cultural Heritage ◽  
3D Imaging ◽  
Spectral Response ◽  
Digital Camera ◽  
Spectral Imaging ◽  
Near Ultraviolet ◽  
2D And 3D ◽  
The Impact ◽  
Scientific Tool

Spectral and 3D imaging techniques are used for museum imaging and cultural heritage documentation providing complementary information to aid in documenting the condition, informing the care, and increasing our understanding of objects. Specialised devices for spectral and 3D imaging may not be accessible for many heritage institutions, due to cost and complexity, and the modification of a consumer digital camera presents the potential of an accessible scientific tool for 2D and 3D spectral imaging. Consumer digital cameras are optimised for visible light, colour photography, but the underlying sensor is inherently sensitive to near ultraviolet, visible, and near infrared radiation. This research presents the characterisation of a modified camera to investigate the impact of the modification on the spectroradiometric and geometric image quality with the intention of the device being used as a scientific tool for cultural heritage documentation. The characterisation includes the assessment of 2D image quality looking at visual noise, sharpness, and sampling efficiency using the target and software associated with the Federal Agencies Digitization Guidelines Initiative. Results suggest that these modifications give rise to discrepancies in computed surface geometries of the order of ± 0.1 mm for small to medium sized objects used in the study and recorded in the round (maximum dimension 20 cm). Measuring the spectral response quantifies the modified camera as a scientific device for more accurate measurements and provides indications of wavelengths that could improve documentation based on sensitivity. The modification of a consumer digital camera provides a less expensive, high-resolution option for 2D and 3D spectral imaging.

Virtual Community Practice Toolkits Using 3D Imaging Technologies

2010 ◽  
pp. 227-248
Author(s):  
George Triantafylliadis ◽  
Nikolaos Grammalidis ◽  
Dimitiros Tzovaras
Keyword(s):  
Cultural Heritage ◽  
3D Imaging ◽  
Virtual Communities ◽  
Point Of View ◽  
Special Effects ◽  
Imaging Technologies ◽  
3D Data ◽  
Virtual Classes ◽  
Third Dimension ◽  
3D Information

Extending visual communications to the third dimension (3D) has been a dream over decades. The ultimate goal of the viewing experience is to create the illusion of a real environment in its absence. However limitations of visual quality and user acceptance prevented the development of relevant mass markets so far. Recent achievements in research and development triggered an increasing interest in 3D visual technologies. From technological point of view, this includes improvements over the whole 3D technology chain, including image acquisition, 3D representation, compression, transmission, signal processing, interactive rendering and 3D display. In the center of all these different areas, the visualization of 3D information stands as the major aspiration to be satisfied, since 3D enriches the interaction experience. This enhanced user experience that 3D imaging offers compared to 2D, is the main reason behind the rapid increase of the virtual communities using and managing 3D data: Archaeological site 3D reproductions, virtual museums (in the field of cultural heritage); 3D plays, special effects (in the field of entertainment); virtual classes (in the field of learning) are only some examples of the potentialities of 3D data. It’s clear that 3D imaging technologies provide a new and powerful mechanism for collaborative practicing. In this context, this chapter focuses on the utilization of 3D imaging technology and computer graphics, in various virtual communities in the domains of education, cultural heritage, protection, commerce, and entertainment.

Design and calibration of an IVEM for general 3-dimensional imaging of non-diffracting materials

1992 ◽  
Vol 50 (2) ◽  
pp. 1040-1041
Author(s):  
Neil Rowlands ◽  
Jeff Price ◽  
Michael Kersker ◽  
Seichi Suzuki ◽  
Steve Young ◽  
...  
Keyword(s):  
3D Imaging ◽  
Tomographic Reconstruction ◽  
Three Dimensional ◽  
3 Dimensional ◽  
3D Microstructure ◽  
Image Translation ◽  
Digital Correlation ◽  
On Line ◽  
Mechanical Stage ◽  
Projection Angle

Three-dimensional (3D) microstructure visualization on the electron microscope requires that the sample be tilted to different positions to collect a series of projections. This tilting should be performed rapidly for on-line stereo viewing and precisely for off-line tomographic reconstruction. Usually a projection series is collected using mechanical stage tilt alone. The stereo pairs must be viewed off-line and the 60 to 120 tomographic projections must be aligned with fiduciary markers or digital correlation methods. The delay in viewing stereo pairs and the alignment problems in tomographic reconstruction could be eliminated or improved by tilting the beam if such tilt could be accomplished without image translation.A microscope capable of beam tilt with simultaneous image shift to eliminate tilt-induced translation has been investigated for 3D imaging of thick (1 μm) biologic specimens. By tilting the beam above and through the specimen and bringing it back below the specimen, a brightfield image with a projection angle corresponding to the beam tilt angle can be recorded (Fig. 1a).

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