scholarly journals Capture-to-display delay measurement for visual communication applications

2015 ◽  
Vol 4 ◽  
Author(s):  
Haoming Chen ◽  
Chao Wei ◽  
Mingli Song ◽  
Ming-Ting Sun ◽  
Kevin Lau
Keyword(s):  
Measurement Error ◽  
Exposure Time ◽  
Visual Communication ◽  
Delay Measurement ◽  
Video Chat

We propose a method to measure the capture-to-display delay (CDD) of a visual communication application. The method does not require modifications to the existing system, nor require the encoder and decoder clocks be synchronized. Furthermore, we propose a solution to solve the multiple-overlapped-timestamp problem due to the exposure time of the camera. We analyze the measurement error, and implement the method in software to measure the CDD of a cellphone video chat application over various types of networks. Experiments confirm the effectiveness of our proposed method.

scholarly journals Successful Transitions to Remote Assessments and Technology Installations due to COVID-19: The I-CONECT Project

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 958-958
Author(s):  
Khoa Nguyen ◽  
Mattie McDonald ◽  
Colton Scavone ◽  
Nora Mattek ◽  
Jeffrey Kaye ◽  
...  
Keyword(s):  
Social Interaction ◽  
Community Dwelling ◽  
Controlled Clinical Trial ◽  
Cognitive Assessments ◽  
Video Chat ◽  
Remote Assessment ◽  
Study Population ◽  
Support Team ◽  
Socially Isolated ◽  
The Impact

Abstract I-CONECT is a randomized controlled clinical trial to examine the impact of social interaction delivered via video-chat on cognitive function (clinicaltrials.gov number: NCT02871921, project website: www.I-CONECT.org ). We aimed to enroll 320 community-dwelling socially isolated older adults (age >=75 years). The recruitment of participants has started in 2018 and was ongoing when COVID-19 pandemic began. Video chat and telephone-based social interaction interventions did not change during COVID-19. However, new recruitment and cognitive assessments, which require in-person contact and deployment and retrieval of video chat devices in participant homes, were suspended due to the nature of our study population (i.e., older age, higher likelihood of comorbidities). Recently we were able to successfully switch to complete remote assessments including 1) telephone-based cognitive assessments using T-COG (Telephone Cognitive Assessment battery), and 2) contactless delivery of our study devices (Chrome books and electronic pill boxes) for subject self-installation. Our creative approach to self-installations includes color coded pictures and an easy-to-follow installation manual, accompanied by remote instruction and support via telephone. This poster introduces our remote assessment and installation protocol and participant and technical support team feedback regarding this new contactless protocol. This presentation provides useful guidance for future studies considering completely remote assessment and telemedicine approaches.

Video Chat Application for Mutes

2021 ◽  
Author(s):  
Thanekar Aadit ◽  
Jha Deepak ◽  
Patil Janhavi ◽  
Deone Jyoti
Keyword(s):  
Video Chat

Object tracking in the presence of occlusions using multiple cameras

2013 ◽  
Vol 9 (2) ◽  
pp. 1-36 ◽  
Author(s):  
Ali O. Ercan ◽  
Abbas El Gamal ◽  
Leonidas J. Guibas
Keyword(s):  
Object Tracking ◽  
Multiple Cameras
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