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Permanent URI for this collectionhttps://hdl.handle.net/20.500.14288/6

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    PublicationOpen Access
    Decoupling of real and digital content in projection-based augmented reality systems using time multiplexed image capture
    (Society for Imaging Science and Technology (IS_T), 2017) Department of Electrical and Electronics Engineering; Soomro, Shoaib Rehman; Ulusoy, Erdem; Ürey, Hakan; Faculty Member; Department of Electrical and Electronics Engineering; College of Engineering; N/A; 111927; 8579
    Projection-based augmented reality systems overlay digital information directly on real objects, while at the same time use cameras to capture the scene information. A common problem with such systems is that cameras see the projected image besides the real objects to some degree. This crosstalk reduces the object detection and digital content registration abilities. The authors propose a novel time sharing-based technique that facilitates the real and digital content decoupling in real time without crosstalk. The proposed technique is based on time sequential operation between a MEMS scanner-based mobile projector and rolling shutter image sensor. A MEMS mirror-based projector scans light beam in raster pattern pixel by pixel and completes full frame projection over a refresh period, while a rolling shutter image sensor sequentially collects scene light row by row. In the proposed technique, the image sensor is synchronized with scanning MEMS mirror and precisely follows the display scanner with a half-period lag to make the displayed content completely invisible for camera. An experimental setup consisting of laser pico projector, an image sensor, and a delay and amplifier circuit is developed. The performance of proposed technique is evaluated by measuring the crosstalk in captured content and sensor exposure limit. The results show 0% crosstalk in captured content up to 8 ms sensor exposure. High capture frame rate (up to 45 fps) is achieved by cyclically triggering a 3.2 MP, 60 fps CMOS sensor and using a 60 Hz pico projector. © 2017 Society for Imaging Science and Technology.
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    PublicationOpen Access
    Social drone companion for the home environment: a user-centric exploration
    (Association for Computing Machinery (ACM), 2017) Karjalainen, Kari Daniel; Romell, Anna Elisabeth Sofia; Ratsamee, Photchara; Fjeld, Morten; Obaid, Mohammad; Yantaç, Asım Evren; Faculty Member; KU Arçelik Research Center for Creative Industries (KUAR) / KU Arçelik Yaratıcı Endüstriler Uygulama ve Araştırma Merkezi (KUAR); 52621
    Recent research has focused on how to facilitate interaction between humans and robots, giving rise to the field of human robot interaction. A related research area is human-drone interaction (HDI), investigating how interaction between humans and drones can be expanded in novel and meaningful ways. In this work, we explore the use of drones as companions in a home environment. We present three consecutive studies addressing user requirements and design space of companion drones. Following a user-centered approach, the three stages include online questionnaire, design workshops, and simulated virtual reality (VR) home environment. Our results show that participants preferred the idea of a drone companion at home, particularly for tasks such as fetching items and cleaning. The participants were also positive towards a drone companion that featured anthropomorphic features.
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    PublicationOpen Access
    Systems approach to health service design, delivery and improvement: a systematic review and meta-analysis
    (BMJ Publishing Group, 2021) Komashie, Alexander; Ward, James; Bashford, Tom; Dickerson, Terry; Kaya, Gülsüm Kübra; Liu, Yuanyuan; Kuhn, Isla; Kohler, Katharina; Boddy, Nicholas; O'Kelly, Eugenia; Masters, Joseph; Dean, John; Meads, Catherine; Clarkson, P. John; Department of Media and Visual Arts; Günay, Aslı; Faculty Member; Department of Media and Visual Arts; College of Social Sciences and Humanities
    Objectives: to systematically review the evidence base for a systems approach to healthcare design, delivery or improvement. Design: systematic review with meta-analyses. Methods: included were studies in any patients, in any healthcare setting where a systems approach was compared with usual care which reported quantitative results for any outcomes for both groups. We searched Medline, Embase, HMIC, Health Business Elite, Web of Science, Scopus, PsycINFO and CINAHL from inception to 28 May 2019 for relevant studies. These were screened, and data extracted independently and in duplicate. Study outcomes were stratified by study design and whether they reported patient and/or service outcomes. Meta-analysis was conducted with Revman software V.5.3 using ORs-heterogeneity was assessed using I-2 statistics. Results: of 11 405 records 35 studies were included, of which 28 (80%) were before-and-after design only, five were both before-and-after and concurrent design, and two were randomised controlled trials (RCTs). There was heterogeneity of interventions and wide variation in reported outcome types. Almost all results showed health improvement where systems approaches were used. Study quality varied widely. Exploratory meta-analysis of these suggested favourable effects on both patient outcomes (n=14, OR=0.52 (95% CI 0.38 to 0.71) I-2=91%), and service outcomes (n=18, OR=0.40 (95% CI 0.31 to 0.52) I-2=97%). Conclusions: this study suggests that a systems approaches to healthcare design and delivery results in a statistically significant improvement to both patient and service outcomes. However, better quality studies, particularly RCTs are needed.