Search results for "Digitization"
showing 10 items of 59 documents
Automatic production of three-dimensionnel models by 3D digitization
2012
The manual 3D digitization process is expensive since it requires a highly trained technician who decides about the different views needed to acquire the object model. The quality of the final result strongly depends, in addition to the complexity of the object shape, on the selected viewpoints and thus on the human expertise. Nowadays, the most developed digitization strategies in industry are based on a teaching approach in which a human operator manually determines one set of poses for the ranging device. The main drawback of this methodology is the influence of the operator's expertise. Moreover, this technique does not fulfill the high level requirement of industrial applications which…
3D digitization of transparent objects by polalization techniques in IR & by triangulation in UV
2011
Two non-conventional methods for the 3D digitization of transparent objects via non-contact measurement are reported in this thesis. 3D digitization is a well acknowledged technique for opaque objects and various commercial solutions based on different measurement approaches are available in the market offering different types of resolution at different prices. Since these techniques require a diffused or lambertian surface, their application to transparent surfaces fails. Indeed, rays reflected by the transparent surface are perturbed by diverse inter-reflections induced by the refractive properties of the object. Therefore, in industrial applications like quality control, the transparent …
Information Disclosure and Sustainable Competitive Advantage: Evidence from the Spanish Tourism Industry
2022
Of all the resources and capabilities that have a well-established impact on decision-making, information stands out. With the advent of the digital economy, organizations have been making significant information and communication technology (ICT) investments, but the empirical evidence of the impact of these investments on business outcomes has been inconsistent. This article studies the conditions that disclosed information resources and ICT must fulfil in order to become a source of sustainable competitive advantage in tourism organizations. The results point to the need to identify distinct financial and non-financial information dimensions, distinguished according to their direct poten…
How to Determine Reliable Intensities Using Film Methods?
1997
The basis of a successful structure analysis is to obtain reliable intensities. In the field of electron crystallography intensity data can be collected on-line with a CCD-camera as well as off-line using image plates or film material. Whereas image plates are read out with a laser, film material is analysed via a densitometer or digitised using a CCD-camera or a scanner. Both, CCD-camera and scanner, uses CCDtechnology and we show that both systems can be used for intensity evaluation. In order to obtain reliable intensities from film media it is important to define and calibrate the experimental conditions, the digitization process and the evaluation of intensity data exactly. A high opti…
Registration of arbitrary multi-view 3D acquisitions
2013
International audience; To register 3D meshes representing smooth surfaces we track the 3D digitization system using photogrammetric techniques and calibrations. We present an example by digitizing a 800 mm x 600 mm portion of a car door. To increase the tracking accuracy the 3D scanner is placed in a cubic frame of side 0.5 m covered with 78 targets. The target frame moves in a volume that is approximately 1100 mm x 850 mm x 900 mm, to digitize the area of interest. Using four cameras this target frame is tracked with of an accuracy of 0.03 mm spatially and 0.180 mrad angularly. A registration accuracy between 0.1 mm and 2 mm is reached. This method can be used for the registration of mesh…
A knowledge based architecture for the virtual restoration of ancient photos
2017
Abstract Historical images are essential documents of the recent past. Nevertheless, time and bad preservation corrupt their physical supports. Digitization can be the solution to extend their “lives”, and digital techniques can be used to recover lost information. This task is often difficult and time-consuming, if commercial restoration tools are used for the purpose. A new solution is proposed to help non-expert users in restoring their damaged photos. First, we defined a dual taxonomy for the defects in printed and digitized photos. We represented our restoration domain with an ontology and we created some rules to suggest actions to perform in case of some specific events. Classes and …
Reverse Modelling Process to support of a Flemish Wooden Altarpiece Physical Restoration
2021
This study focuses on digital Computer Aided Restoration procedures to guide the complex physical restoration of an artwork, innovating and implementing traditional survey methods. As a case study some results are presented of a complex and articulated conservative restoration project on a sculpted and painted wing altar, preserved in the Regional Gallery of Sicily in Palazzo Abatellis, Palermo. The application of non-invasive and high information density 3D survey methodologies allowed to record and integrate into a unique digital platform (designed within the UnReal Engine) a wide quantity of heterogeneous data which document the work's state (diagnostic analyses, graphical annotation, hi…
Opportunities and challenges of digitized discretionary practices: a public service worker perspective
2018
Abstract Public service workers exercise discretionary power during policy implementation. Due to an immense diffusion of information and communications technology (ICT) in public service provision, they are increasingly exposed to reforms aiming at more efficient and fair decision-making. Whereas extant literature has found that ICT can both enable and constrain public service workers' ability to exercise discretion, we know less about underlying explanations for these inconclusive findings. This paper addresses this research gap by exploring how and why public service workers react to digitized discretionary practices. We draw upon institutional logics to show the underlying consideration…
Uses and Abuses of Creativity. Sociology of creative processes, transitions to digital and creative policies
2017
Creativity is a notion awakening growing interest in the social sciences. This attention mirrors the debate on the potential economic and social development of creativity as a skill, profession or industry. However, there is also rising critical interpretation of the abuse of this concept, exploited to legitimize the hasty digitization of the cultural field, and of the instrumentalization of culture in pursuit of economic interests. This article is grounded on the contributions of numerous sociologists (Bourdieu, Collins and Menger) in an attempt to reconsider the conditions under which creativity develops, and examine how the framework of digitalization and instrumentalization is shifting …
Implication of Human Capital in the Development of SMEs through the ICT Adoption
2013
Abstract ICT adoption in SMEs and the attraction of benefits from use of these technologies remains a key point in their development. For an enterprise to take part in the digital economy must have a defined basis for innovative adopting, meaning a premise for the development of ICT infrastructure. Given that firms are not a self-driven machinery, human capital is a major factor of influence in enterprise digitization. Considering this, in this paper will analyze the effects generated by human capital on the level of ICT adoption in SMEs in Romania.