Institut für Raumbezogene Informations- und Messtechnik
Hochschule Mainz - University of Applied Sciences

Nachrichten

Vom 5.-8. März 2018 fand der zweite Workshop der Postdoc Stipendiaten des VW-Programms „Wissen für morgen – Kooperative Forschungsvorhaben im sub-…

Während die ägyptisch-deutsche Mission in Heliopolis unter anderem weitere Teile der Kolossalstatue des Pharaos Psammetich I. zu Tage beförderten, fand vom…

Projekte

Die sogenannte African Red Slip Ware (ARS) ist eine zentrale archäologische Objektgattung für das Verständnis spätantiker Vorstellungswelten und ihres Wandels, wie auch für die Wir…
The so-called African Red Slip Ware (ARS) is a central archaeological object type for the understanding of late antique worlds of ideas and their change, as well as for the economi…

Publikationen

Genauigkeitsabschätzung von Bündelblockausgleichungen mit Hilfe des EMVA1288 Standards

2017

W. Kisser,
F. BOOCHS,
D. PAULUS

BibTex

gis.Science Zeitschrift fĂĽr Geoinformatik

Dieser Beitrag beschreibt die a priori Abschätzung erreichbarer Genauigkeiten der Bündelblockausgleichung. Dies geschieht mit Hilfe des EMVA1288 Standards. Durch numerische Simulationen wird hierzu zunächst die Zentrumsunsicherheit der Zielmarken mit der daraus folgenden Objektraum-Unsicherheit verknüpft. Der nächste Schritt ist eine Verknüpfung der EMVA1288-Kennzahlen und der daraus resultierenden Unsicherheit eines Grauwertes mit Algorithmen zur Ellipsendetektion. Abschließend wird ein stochastisches Modell vorgeschlagen und an einer real durchgeführten Kamerakalibrierung untersucht.


Knowledge-based object recognition in point clouds and image data sets

2017

J.J. Ponciano,
F. BOOCHS,
A. Trémeau

BibTex

gis.Science

Ontology-Based Structuring of Spectral and Spatial Recording Strategies for Cultural Heritage Assets: Background, State of Affairs, and Future Perspectives

2017

A. Karmacharya,
S. Wefers

BibTex

A. Bentkowska-Kafel, L. MacDonald (eds), Digtial Techniques for Documenting and Preserving Cultural Heritage

The activities of COSCH community and the disciplines it represents were as diverse as they could possibly be in research into cultural heritage. To achieve common goals it was of utmost importance to have a common understanding of these diverse activities and disciplines. Work on the COSCH Knowledge Representation, or COSCHKR, was undertaken to develop a common semantic base representing different disciplines and to facilitate communication within the Action. The COSCHKR is an ontology-based inference model, guided by inference rules that provide a semantic bridge between various interdisciplinary activities involved in non-invasive technical documentation of material cultural heritage. The model is intended to support humanities experts by recommending optimal spatial and spectral techniques. The model may also be used by technology experts to compare their own solutions with the ones recommended through COSCHKR, and to understand why they may differ.
In this chapter we present the methods adopted for designing the COSCHKR and the steps in the development of the inference model. The difficulties in maintaining a common level of understanding within the diverse disciplines during the knowledge acquisition process are discussed. We present mechanisms and methods of information collection, its structuring, and aligning, to formulate different axioms and theorems within the model. The design and development of COSCHKR was based on an iterative procedure where the gathered knowledge was first verified with the group of experts before it was processed. This verification mechanism was important for the reliability of the model, ensuring technical consistency. This chapter highlights the importance of these iterative mechanisms in the validation of knowledge gathered and then information populated inside the knowledge base.


Wall Paintings in the Château de Germolles: An Interdisciplinary Project for the Rediscovery of a Unique Fourteenth-Century Decoration

2017

C. Degrigny,
F. Piqué

BibTex

A. Bentkowska-Kafel, L. MacDonald (eds), Digtial Techniques for Documenting and Preserving Cultural Heritage

The aim of this study was to examine and document the wall paintings in the Château de Germolles. Situated in Burgundy, France, Germolles is the best preserved residence of the Dukes of Burgundy and was listed as a monument of national importance in 1989.
The medieval wall decoration of the Château de Germolles was rediscovered under the nineteenth-century plasters during World War II. Medieval accounts of the château provide a detailed list of the materials acquired to make the mural decoration, but this list is incongruous when compared with the current appearance of the paintings. The discrepancy between the archival and material evidence, and also the need to understand the complexity of the painting technique used were the main motivations for undertaking the case study described in this chapter. Imaging alongside more traditional examination techniques were utilized to record and document the mural decoration. The objectives of the case study were to distinguish the original materials from those applied during restoration, identify those materials, and correlate them with the archives. We also tried to understand the medieval painting techniques used and assess the condition of the paintings and stabilization requirements. Finally we aimed to find a sustainable solution for the management of the various types of data collected. Various techniques and investigations offered valuable insights into the materials and the painting technique used. To improve visitor experience, based on the information gained in the course of this study, a 3D virtual representation of the original decoration is currently proposed for display to the public visiting the Château de Germolles.


An Interdisciplinary Discussion of the Terminologies used in Cultural Heritage Research

2017

M. de Almeida,
S. Wefers,
O. Murphy

BibTex

A. Bentkowska-Kafel, L. MacDonald (eds), Digtial Techniques for Documenting and Preserving Cultural Heritage.

Accuracy, Artefact, Feature, Precision, Reconstruction, Resolution, Texture, Uncertainty are words central to many discussions of the documentation of CH. This chapter charts the interdisciplinary discussion towards a common understanding of terminologies used in CH. It is a discussion that recognizes critical differences or common misuse, and aims to contribute to a shared understanding that may be useful for all knowledge domains in the field.


Digital 3D reconstructed models: Using semantic technologies for recommendations in visualization applications

2017

S. Wefers

BibTex

Studies in Digital Heritage

Digital 3D reconstructed models A proposition for structuring visualisation workflows using semantic technologies for recommendations

2017

S. Wefers,
A. Karmacharya,
M. Pfarr-Harfst,
F. BOOCHS

BibTex

Studies in Digital Heritage

It is common for cultural heritage applications to use spatial and/or spectral data for documentation, analysis and visualisation. Knowledge on data requirements coming from the cultural heritage application and technical alternatives to generate the required data based on object characteristics and other influencings factors paves the way for the optimal selection of a recording technology. It is a collaborative process requiring knowledge of experts from cultural heritage domains and technical domains. Currently, this knowledge is structured and stored in an ontology (so-called COSCHKR). It has the purpose to support CH experts not familiar with technologies through prescribing an optimal spatial or spectral recording strategy adapted to the physical characteristics of the cultural heritage object and the data requirements of the targeted CH application. The creation of digital 3D reconstructed models for analysis and visualisation purposes is getting more and more common within humanities disciplines. Therefore, an implementation of mechanisms involved in visualisation applications into this ontology would have huge benefits in creating a powerful recommendation solution. A structured view on such project workflows facilitates a rough match with the existing knowledge representation. Illustrating the overall structure of COSCHKR, this paper addresses and discusses challenges in structuring the processes of cultural heritage visualisation and implementing these into the ontology.


How to Enrich Description Logics with Fuzziness

2017

M. Unold,
C. Cruz

BibTex

SAI Computing Conference

The paper describes the relation between fuzzy and non-fuzzy description logics. It gives an overview about current research in these areas and describes the difference between tasks for description logics and fuzzy logics. The paper also deals with the transformation properties of description logics to fuzzy logics and backwards. While the process of transformation from a description logic to a fuzzy logic is a trivial inclusion, the other way of reducing information from fuzzy logic to description logic is a difficult task, that will be topic of future work.


Studentische Projekte

Maryam Asgari Movahed,
Sarah Koziol,
Andreas KrauĂź,
Julia Pfetsch,
Angelique PrĂĽĂź

LINK

Copernicus ist das europäische Erdbeobachtungprogramm. Es besteht u.a. aus einer Weltraumkomponente mit mehreren Satelliten-Missionen, den Sentinel-Missionen. Derzeit sind Radardaten der Sentinel-1-Mission und multispektrale Daten –   ähnlich Landsat – der Sentinel-2-Mission frei verfügbar. Durch die hohe räumliche und zeitliche Auflös…


Ender Kurt,
Cedric Mayer

LINK

Das Vorhaben hatte zum Ziel, ein wirtschaftliches Verfahren zur Erstellung von Gebäudeplänen zu untersuchen. So wurde durch die Gruppe eine 3D-Erfassung und Auswertung mittels handgeführtem Low-Cost Scannersystem in Form der
Sensorleiste Kinect durchgeführt. Die abgeleiteten Pläne können neben der Indoor-Navigation u.a. auch zu Zw…


Michael MĂĽller (B. Sc.),
Fabian Schmenger (B. Sc.),
Daniel Schröder (B. Sc.),
Kira Zschiesche (B. Eng.)

LINK

Im dritten Semester des Masterstudiengangs Geoinformatik und Vermessung ist von den Studierenden ein Projekt als Gruppenarbeit im Rahmen von ca. 540 Arbeitsstunden pro Studierendem durchzuführen. Es besteht die Möglichkeit für die Studierenden während einer solchen Projektphase neuartige und alternative Auswerteverfahren für bestehende…


Abschlussarbeiten

ArcPy-basierte Entwicklung eines Workflows zur Geoprozessierung von Bioaerosol- und Atmosphärendaten
Wachter, Jeanette 2016/2017 - HTML

Visualisierung von Unsicherheiten
Kast, Emily 2016/2017 - HTML

Anwendungsorientierte Integration von Sonderfunktionen digitaler Industriekameras fĂĽr Modulare Digitalkameratachymeter
Heidelberg, Arno Dario Ingo 2016 - HTML