To achieve realistic Augmented Reality (AR), shadows play an important role in creating a 3D impression of a scene. Casting virtual shadows on real and virtual objects is one of the topics of research being conducted in this area. In this paper, we propose a new method for creating complex AR indoor scenes using real time depth detection to exert virtual shadows on virtual and real environments. A Kinect camera was used to produce a depth map for the physical scene mixing into a single real-time transparent tacit surface. Once this is created, the camera's position can be tracked from the reconstructed 3D scene. Real objects are represented by virtual object phantoms in the AR scene enabling users holding a webcam and a standard Kinect camera to capture and reconstruct environments simultaneously. The tracking capability of the algorithm is shown and the findings are assessed drawing upon qualitative and quantitative methods making comparisons with previous AR phantom generation applications. The results demonstrate the robustness of the technique for realistic indoor rendering in AR systems.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5145151PMC
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0166424PLOS

Publication Analysis

Top Keywords

real environments
8
virtual shadows
8
kinect camera
8
virtual
6
real
5
livephantom retrieving
4
retrieving virtual
4
virtual light
4
light data
4
data real
4

Similar Publications

Most gene therapies exert their actions via manipulation of hepatocytes (parenchymal cells) and the reasons behind the suboptimal performance of synthetic mRNA in non-parenchymal cells (NPC) such as Kupffer cells (KC), and liver macrophages, remain unclear. Here, the spatio-temporal distribution of mRNA encoding enhanced green fluorescent protein (Egfp), siRNA, or both co-encapsulated into lipid nanoparticles (LNP) in the liver in vivo using real-time intravital imaging is investigated. Although both KC and hepatocytes demonstrate comparable high and rapid uptake of mRNA-LNP and siRNA-LNP in vivo, the translation of Egfp mRNA occurs exclusively in hepatocytes during intravital imaging.

View Article and Find Full Text PDF

Antimicrobial peptides (AMPs) are promising agents for treating antibiotic-resistant bacterial infections. Although discovering novel AMPs is crucial for combating multidrug-resistant bacteria and biofilm-related infections, their clinical potential relies on precise, real-time evaluation of efficacy, toxicity, and mechanisms. Optical diffraction tomography (ODT), a label-free imaging technology, enables real-time visualization of bacterial morphological changes, membrane damage, and biofilm formation over time.

View Article and Find Full Text PDF

Clinical supervision is a valued learning tool for student nurses; however, there is a paucity of description around real-time experience of clinical supervision among qualified advanced nurse practitioners. Many qualified nurses claim delays in engaging with clinical supervision may be caused by staff shortages, time constraints, workload in busy clinical environments, or a reticence to engage in discussions that might reveal shortcomings in knowledge or practical skills. This article reviews a process of monthly clinical supervision that has been conducted among a group of qualified emergency department advanced nurse practitioners for 25 years.

View Article and Find Full Text PDF

Objectives: The ICU built environment-including the presence of windows-has long been thought to play a role in delirium. This study investigated the association between the presence or absence of windows in patient rooms and ICU delirium.

Design: Retrospective single institution cohort study.

View Article and Find Full Text PDF

: The COVID-19 health crisis challenged healthcare systems around the world, leading to restrictions in access to face-to-face healthcare services, and forcing rapid adaptation to telehealth services. At present, there is a gap in the functioning of this adaptation in drug-dependence centres. The present study analyses, over four years, care indicators on the care modality (face-to-face vs.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!