scholarly journals A Large Effective Touchscreen Using a Head-Mounted Projector

Information ◽  
2018 ◽  
Vol 9 (9) ◽  
pp. 235
Author(s):  
Yusuke Kemmoku ◽  
Takashi Komuro

In our previous work, we proposed a user interface in which a user wears a projector and a depth camera on his or her head and performs touch operations on an image projected on a flat surface. By using the head-mounted projector, images are always projected in front of the user in the direction of the user’s gaze. The image to be projected is changed according to the user’s head pose so as to fix the superimposed image on the surface, which realizes a large effective screen size. In this paper, we conducted an experiment for evaluating the accuracy of registration by measuring the positional and rotational errors between the real world and the superimposed image using our experimental system. As a result, the mean absolute errors of translation were about 10 mm when the user stopped his head, and the delay was estimated to be about 0.2 s. We also discuss the limitations of our prototype and show the direction of future development.

2021 ◽  
Vol 36 (6) ◽  
pp. 1187-1188
Author(s):  
Jason A Blake ◽  
Brandon Mitchell ◽  
Staci McKay ◽  
Gitendra Uswatte ◽  
Edward Taub

Abstract Objective Currently, the majority of cognitive training research measures treatment efficacy using in-laboratory measures, with minimal focus on real-world treatment changes. This case series demonstrates the feasibility of transferring cognitive improvements from the laboratory into the everyday life setting. Method This case series includes 6 chronic post-stroke participants; mild to moderate cognitive impairment. The intervention combines cognitive training with behavioral techniques, known as the Transfer Package (TP). The TP involves components that target functionality on IADLs in the real-world. Performance on cognitively-based IADLs in the real world are measured pre-treatment, post, and 6-month follow-up. Measures of real-world ability are the: Canadian Occupational Performance Measure (COPM), Cognitive Task Activity Log (CTAL) and Inventory of Improved and New Abilities (INCA). In-laboratory measures included the D-KEFS and Timed IADL assessments. Results The real-world outcome measures used in this study were the COPM and two measures developed for this study, the CTAL and INCA. The mean change from pre to post on the COPM Performance Scale was 2.18 (SD = 1.33) and the mean change on the COPM Satisfaction Scale was 2.70 (SD = 1.27). The mean change on the CTAL was 1.96 (SD = 0.93). On the INCA, the mean number of improved real-world cognitive activities was 11.8 (SD = 4.9) and the mean number of new cognitive activities was 7.6 (SD = 3.9). Follow-up reported near-perfect retention on CTAL and continued improvement on the INCA. There were minimal changes on in-laboratory measures. Conclusions This case series provides a framework for achieving the transfer of cognitive training treatment effects in the real-world life situation by overcoming behavioral barriers to functioning.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Raja Narayanan ◽  
Aditya Kelkar ◽  
Zahir Abbas ◽  
Neha Goel ◽  
Manoj Soman ◽  
...  

Abstract Background Macular edema secondary to retinal vein occlusion (RVO) is an important cause of loss of vision. Intravitreal injections (IVI) of anti-vascular endothelial growth factor (VEGF) are the standard of care in this disease, as shown in numerous randomized controlled trials. The purpose of this study was to study the efficacy and safety of ranibizumab, an anti-VEGF agent, in the real-world setting. Methods This was 48 weeks, open-label, prospective, multicentre, observational study. Patients diagnosed with ME secondary to RVO were treated with IVI of Ranibizumab 0.5 mg in real-world conditions. Efficacy was measured by improvement seen in best-corrected visual acuity (BCVA) in terms of Early Treatment of Diabetic Retinopathy Study (ETDRS) Letter Scores and change in central retinal thickness (CRT) measured by optical coherence tomography. Results One hundred eyes of 100 patients (79 with branch retinal vein occlusion and 21 with central retinal vein occlusion) were recruited in the study. The mean (standard deviation, SD) BCVA was 52.8 (21.99) letters at baseline and 62.3 (24.40) letters at week 48. From baseline, there was a significant improvement in BCVA by 7.7 letters (p = 0.001) at 48 weeks. The mean (SD) of CRT was 479.9 (216.25) μm at baseline and it decreased significantly to 284.9 (171.35) μm at week 48 (p < 0.001). During the study period, the average number of intravitreal injections was 3.5 per patient. There was no report of endophthalmitis in any eye. Conclusions Ranibizumab is well tolerated and effective in treating macular edema secondary to RVO in real-world clinical settings. However, there is under-treatment compared to controlled clinical trials, and the gain in vision is sub-optimal with under-treatment. Trial registration Clinical Trials Registry - India: CTRI/2015/07/005985.


Author(s):  
Kazi Tanvir Ahmed Siddiqui ◽  
David Feil-Seifer ◽  
Tianyi Jiang ◽  
Sonu Jose ◽  
Siming Liu ◽  
...  

Simulation environments for Unmanned Aerial Vehicles (UAVs) can be very useful for prototyping user interfaces and training personnel that will operate UAVs in the real world. The realistic operation of such simulations will only enhance the value of such training. In this paper, we present the integration of a model-based waypoint navigation controller into the Reno Rescue Simulator for the purposes of providing a more realistic user interface in simulated environments. We also present potential uses for such simulations, even for real-world operation of UAVs.


2021 ◽  
Vol 10 (13) ◽  
pp. 2758
Author(s):  
Alper Bilgic ◽  
Laurent Kodjikian ◽  
Francesc March de Ribot ◽  
Vaishali Vasavada ◽  
Jesus H. Gonzalez-Cortes ◽  
...  

The aim of the present study was to determine the efficacy and safety of intravitreal brolucizumab therapy for neovascular age-related macular degeneration (AMD) in the real-world setting. The REBA study (real-world experience with brolucizumab in wet AMD) was a retrospective, observational, multicentric study that included 78 consecutive patients (105 eyes), with neovascular AMD, who received brolucizumab therapy. Both treatment-naive and switch-therapy patients were included. Switch therapy was based either on fluid recurrence, fluid recalcitrance, or inability to extend beyond q4/q6. All relevant data were collected. The primary outcome measure was change in best-corrected visual acuity (BCVA) over time. Secondary outcome measures included determination of change in central subfield thickness (CST) and complications. The mean baseline BCVA was 49.4 ± 5.4 letters and 40 ± 3.2 letters, and corresponding mean BCVA gain was +11.9 ± 3.9 letters (p = 0.011) and +10.4 ± 4.8 letters (p = 0.014) in the treatment-naive and switch-therapy groups, respectively. The change in CST was significantly decreased in the treatment-naive (p = 0.021) and the switch-therapy (p = 0.013) groups. The mean follow-up was 10.4 months in both groups. One patient in the switch-therapy group developed vascular occlusion and another a macular hole after the fifth brolucizumab injection. Both patients recovered uneventfully. In conclusion, patients showed a very good anatomical and functional response to brolucizumab therapy in the real world, regardless of prior treatment status, until the end of the follow-up period. Two significant untoward events were noted.


2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 717.2-718
Author(s):  
M. Yamamura

Background:A Part of patients with polymyalgia rheumatica (PMR) are refractory to the 2015 EULAR/ACR algorism for the management of PMR. Recent reports have demonstrated that tocilizumab (TCZ) may be efficacious for refractory and relapsing PMR.Objectives:To determine the real-world efficacy of the 2015 EULAR/ACR algorism for the management of PMR plus introduction of TCZ for refractory and relapsing PMR.Methods:Patients who had been diagnosed with PMR according to the 2012 EULAR/ACR provisional classification criteria for PMR were recruited in the study. Registered variables included demographic data, disease characteristics, prednisolone (PSL) dosage and duration, addition of methotrexate (MTX) and TCZ, adverse effects, and clinical outcomes.Results:There were 101 patients who had originally diagnosed as PMR (50 males and 65 females) and followed up for at least one year; the mean ± SD age at onset was 73 ±11 years at onset, with the mean observational period being 44 ± 26 months. Their treatments were initiated with PSL of 15.5 ± 4.3 mg/day. 41 patients experienced disease recurrence after 9.6 ± 6.7 months (median 9 month) of GC therapy, while receiving PSL at 5 ± 4.5 mg/day (3.7 mg/day). Baseline factors that were associated with relapse in our cohort were higher-grade thrombocytosis and higher-dose of initial GC by multivariate analysis. In 30 of the 41 patients who failed GC monotherapy, MTX was added. Five patients reached GC-free remission, but 25 patients failed GC tapering. In such refractory patients to a combination of GC plus MTX, 8 patients agreed to add TCZ therapy, and 5 of them reached drug-free remission. At present, 67 of the total 101 patients maintained drug-free remission, but most others were still receiving low-dose GC and/or MTX (n=17). No significant adverse effects did not occur during therapy, except for GC-related adverse effects such as diabetes, dyslipidemia and osteoprotic fractures.Conclusion:Our experience indicated that there is notable heterogeneity across PMR patients in terms of drug response, and the patients with severe inflammation, e.g. thrombocytosis, may need higher-dose of initial GC and addition of biologics such as TCZ on the 2015 EULAR/ACR algorism.Acknowledgments:NoneDisclosure of Interests:None declared


2017 ◽  
Vol 11 (1) ◽  
pp. 48
Author(s):  
Beatrice Giampietro ◽  
Fabrizio Tiratterra ◽  
Antonella Paradiso ◽  
Fabiana Lanti ◽  
Chiara Villani ◽  
...  

Chronic kidney disease (CKD) is very often among diabetic patients. Some oral antidiabetic agents are not recommended in the presence of CKD. Aim of the study was to evaluate the quality of diabetes mellitus (DM) treatment in nephrophatic patients in the real world. A total of 265 subjects with type 2 DM, consecutively admitted to the internal medicine departments of two hospitals in Rome, were recruited. Patients hospitalized for hypoglycemia, decompensated DM, acute kidney failure or worsening nephropathy were excluded. For each patient, the following data were collected: age, gender, estimated glomerular filtration rate (eGFR) using the MDRD (<em>modification of diet in renal disease</em>) study equation, type of antidiabetic drug treatment. A total of 265 subjects were studied, 127 male (47.9%) and 138 female (52.1%). The mean age was 77.5 years. The mean of glycemia glycated hemoglobin (HbA1c) value was 57.5 mmol/mol (7.4%). 137 patients (51.7%) were treated with oral antidiabetic agents, 29 (10%) with both oral antidiabetic agents and insulin, 90 (34%) with insulin alone, 8 (3%) with dipeptidyl peptidase-4 inhibitors, 1 (0.4%) with incretin agents plus oral antidiabetic drugs. According to the Kidney Disease Outcomes Quality Initiative (KDOQI) classification of CKD, the sample was divided into 5 groups using eGFR criteria. For each group, mean HbA1c values, type of antidiabetic treatment, appropriateness of therapy according to guidelines and how it may affect the HbA1c levels were considered. Our data show that 30.5% of patients with CKD stage 3-5 is treated with drugs not recommended by current guidelines.


2013 ◽  
Vol 846-847 ◽  
pp. 1844-1847
Author(s):  
Shu Jun Xing ◽  
Xun Bo Yu ◽  
Tian Qi Zhao ◽  
Xin Zhu Sang ◽  
Yuan Fa Cai ◽  
...  

Most technologies provide three-dimensional (3D) display in the front of screens which are in parallel with the walls, and the sense of immersion is decreased. To get the right ground based 3D imaging, cameras imaging planes should be parallel to the public focus plane, and the cameras optical axes should be shifted to the center of the public focus plane in both vertical and horizontal directions. Virtual cameras are used to display 3D model in computer system. The virtual capturing methods for ground based 3D display are presented. The position of virtual camera is determined by the observers eye positions in the real world. An experimental system for ground based 360°3D display is demonstrated for viewing horizontally, which provides high-immersion 3D visualization. The displayed 3D scenes are compared with the real measurement in the real world.


2020 ◽  
Vol 4 (01) ◽  
pp. 17
Author(s):  
Ferry Kurniawan ◽  
Agus Komarudin ◽  
Rezki Yuniarti

Indonesian local food has a distinctive flavor of spices and uniqueness of every kind of food and the interest of Indonesian people. As time goes by, various types of food nowadays become the main choice of the Indonesian people because lack of promotion and a less attractive appearance. Based on the problem, then designed a learning media and promotion that aims to attract the attention of people to be re-interested with local food. The intended learning media is a game. The Game will convey learning materials about the procedure of making local food and get to know the basic ingredients needed to be in the real world. This research aims to build a simulation game on the ordinance of making food typical of the area and choosing the ingredients that suit the recipe that aims to introduce to the general public and reintroduce the typical food Indonesian area that the food is not less delicious and interesting with the present food. Game design will use a Design-Play-Experience (DPE) approach. Testing will be conducted through a questionnaire where the tested aspect consists of the respondent's background, the interaction of respondents to the game user interface, the perceived user experience of gaming and the simulation aspects of game play. As if the respondent was doing it in the real world and gained new knowledge about the local food based in the game. Results of the questionnaire obtained about the player's background aspect of 70.62%, user interface of 72.36%, user experience of 72.65%, simulation and education of 71.1%.


Sign in / Sign up

Export Citation Format

Share Document