نتایج جستجو برای: video quality assessments
تعداد نتایج: 960720 فیلتر نتایج به سال:
In this paper we investigate the comparison of image quality assessment (IQA) methods for color images. An IQA evaluates a pair of images and returns a single number as a prediction of the perceived image difference. We introduce the Redundant Information Content Evaluation (RICE) that detects redundancies between distinct IQAs. Such comparisons help to develop or improve IQAs with respect to t...
Meteorological "elds are required inputs for air-quality models, but they can contain signi"cant errors which contribute to uncertainties in simulations of airborne chemical species, aerosols and particulate matter. Atmospheric states can be diagnosed from observations or simulated by dynamical models (with or without four-dimensional data assimilation, FDDA). In general, diagnostic models are ...
PURPOSE/OBJECTIVES To describe issues to be considered when measuring the quality of life (QOL) of patients with cancer. DATA SOURCES Published articles and books, conference proceedings, and abstracts. DATA SYNTHESIS A review of the existing literature reveals an emerging field of research and considerable discussion of measurement issues. Consensus is growing about measurement approaches ...
BACKGROUND A recently validated image-based grading scale for acute otitis media (OMGRADE) can be used to assess tympanic membrane (TM) status. The aim of this study was to evaluate the validity and reliability of this scale for remote assessments of TM status using video-otoscopy recordings in an unselected pediatric population. METHOD Children 2-16 years attending a South African primary he...
STUDY AIM To describe general movement in extremely premature infants and examine correlations with risk factors for antenatal, perinatal, and postnatal morbidity. STUDY TYPE Prospective, single-center study. Nineteen patients were followed up. METHODOLOGY The infants' general movement was analyzed using video recordings. Qualitative and quantitative assessments were performed during the wr...
This paper describes a new video-based observation method aimed to assess musculoskeletal load in kitchen work, aspects of its repeatability and validity, and problems confronted by the observers. Two pairs of researchers observed individually 117 video clips recorded in kitchens. Interobserver repeatability was assessed by computing the proportion of agreement and weighted kappa values (kappa(...
Introduction: Since technology has an important role in the improvement of educational quality, finding better methods of teaching and learning and improving equipment and teaching materials is emphasized. Regarding this, two educational methods- presentation by the instructor and video presentation, were offered and their effectiveness on nursing students’ learning skills was compared. Method...
New generation of wireless networks, LTE and WiMAX, supports many services which consume a lot of resources (such as VOIP, Video Conference, Digital Video, Multimedia streams and online Multi-player Games). Supporting multi-media services in wireless communication systems provide new resource allocation challenges. Because of high loads in downlink, efficient resource allocation is vital in dow...
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