45 research outputs found
3DUNDERWORLD-SLS: A Structured-Light Scanning Software for Rapid Geometry Acquisition
No full text<p><strong>Abstract</strong></p>
<p>Recently, there has been an increase in the demand of virtual 3D objects representing real-life objects. A plethora of methods and systems have already been proposed for the acquisition of the geometry of real-life objects ranging from those which employ active sensor technology, passive sensor technology or a combination of various techniques. In this paper we present the development of a 3D scanning system which is based on the principle of structured-light, without having particular requirements for specialized equip-<br>
ment. We discuss the intrinsic details and inherent difficulties of structured-light scanning techniques and present our solutions. Finally, we introduce our open-source scanning software system ”3DUNDERWORLD-SLS” which implements the proposed techniques both in CPU and GPU. We have performed extensive testing with a wide range of models and report the results. Furthermore, we present a comprehensive evaluation of the system and a comparison with a high-end commercial 3D scanner.</p>
<p> </p>
<p><strong>Version information</strong><br>
[v4]<br>
Lead software developer: Qing Gu<br>
Researchers: Qing Gu, Charalambos Poullis<br>
Immersive and Creative Technologies Lab (http://www.theICTlab.org), Concordia University</p>
<p>[v1-v3.2]<br>
Lead software developer: Kyriakos Herakleous<br>
Researchers: Kyriakos Herakleous, Charalambos Poullis<br>
Immersive and Creative Technologies Lab (http://www.theICTlab.org), Concordia University</p>
<p>Part of the 3DUNDERWORLD project: http://www.3dunderworld.org</p>
<p>IMPORTANT: To use this software, YOU MUST CITE the following in any resulting publication:*</p>
<p>@article{GuHerakleousPoullis3dunderworld,<br>
title={A Structured-Light Scanning Software for Rapid Geometry Acquisition},<br>
author={Gu, Qing and Herakleous, Kyriakos and Poullis, Charalambos},<br>
journal={TBA},<br>
year={2016}<br>
}</p>
<p>@article{DBLP:journals/corr/HerakleousP14,<br>
author = {Kyriakos Herakleous and Charalambos Poullis},<br>
title = {3DUNDERWORLD-SLS: An Open-Source Structured-Light Scanning System for Rapid Geometry Acquisition},<br>
journal = {CoRR},<br>
volume = {abs/1406.6595},<br>
year = {2014},<br>
url = {http://arxiv.org/abs/1406.6595},<br>
timestamp = {Tue, 01 Jul 2014 11:58:08 +0200},<br>
biburl = {http://dblp.uni-trier.de/rec/bib/journals/corr/HerakleousP14},<br>
bibsource = {dblp computer science bibliography, http://dblp.org}<br>
}</p>Github repository: https://github.com/theICTlab/3DUNDERWORLD-SLS-GPU_CP
Application of Model Based System Engineering (MBSE) with Ship Design Arrangement Tool of advanced zero emissions Power, Propulsion and Energy Systems in Maritime Technology
No full textThe main aim of the master thesis was to create a design tool for the arrangement of the Propulsion, Power and Energy (PPE) systems during the conceptual design stage in cooperation with Maritime Research Institute of Netherlands (MARIN). Within MARIN, a recent and novel methodology known as Model Based Systems Engineering (MBSE) is implemented to aid in the design process of either fully or partly Zero Emission Ships (ZESs). The arrangement design tool developed in this master thesis needed to provide initial PPE layouts in the conceptual design stage and work as an add-on to the MBSE methodology and the Ship Power and Energy Concept (SPEC) tool, an in-house tool developed by MARIN. The design tool developed is the final necessary step needed between the important physical design details captured within the MBSE and the SPEC tool and the generation of arrangement layouts across a 2-dimensional physical space.In other words, the design tool developed uses the MBSE methodology and SPEC tool details as inputs for the generation of PPE system layouts during the conceptual design stage.Marine Technolog
The Role of Vitamin D in Inflammatory Bowel Disease
No full textVitamin D is known to be vital in maintaining bone health, mineralisation and for fracture prevention. It has also been implicated in a number of autoimmune diseases and has therefore been studied for its potential role in Inflammatory Bowel Disease (IBD). This review looks at the current literature on the role of vitamin D and its potential role as an immunomodulator, disease modifier and bone health in IBD patients. There is substantial supporting evidence of an important role from epidemiological, genetic and immunological studies, but there is also conflicting evidence and nothing proving to be definitive from clinical studies. There are also a number of confounders with IBD patients, as their lifestyles and medications may affect vitamin D levels. Murine studies have added vast amounts to our knowledge of vitamin D and its antimicrobial role, as well as its effect on immune cell proliferation other inflammatory molecules, such as Tumour Necrosis Factor-α (TNFα). It is clear that larger trials investigating the effects of oral supplementation of vitamin D in IBD patients are necessary
P374 Sub-optimal vaccination uptake in high-risk patients with inflammatory bowel disease
No full textP375 Patient perspectives on the use of social media in the management of inflammatory bowel disease
No full textPWE-059 Travelling with inflammatory bowel disease (IBD): barriers, fears, concerns and suggestions for support
No full textA novel photometric stereo imaging sensor for endoscopy imaging: Proof of concept studies on a porcine model
No full textThe American Society of Gastroenterology Endoscopy led Preservation and Incorporation of Valuable Endoscopy Innovations initiative has identified real time poly diagnosis as one of the next major technology driven changes in endoscopy (1). A number of imaging techniques are presently being investigated in this area. The complex and demanding nature of the imaging environment, including issues relating to operation in a confined space, the presence of surface fluids and the highly reflective nature of the mucosa areas, renders 3D surface capture and analysis for the purpose of diagnosis an extremely challenging task. A novel Photometric Stereo (PS) imaging sensor has never been previously assessed for mucosal imaging. PS imaging requires the capture of the mucosal regions while illuminated using light from differing known directions and offers the potential for the recovery of high resolution 3D shape and topographic texture data. The captured PS images are then used to recover and analyse the 3D surface geometry
Inflammatory bowel disease detection and monitoring by measuring biomarkers in non‐invasively collected colorectal mucus
No full text
