Book ChapterDOI
Using Spatio-Temporal Saliency to Predict Subjective Video Quality: A New High-Speed Objective Assessment Metric
Maria Laura Mele,Maria Laura Mele,Damon Millar,Christiaan Erik Rijnders +3 more
- pp 353-368
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TLDR
A new VQA metric, consisting of a method based on spatio-temporal saliency to model human visual perception of quality, called Sencogi Spatio-Temporal Saliency Metric (Sencogi-STSM), which generates subjective quality scores of video compression in terms of prediction efficacy and accuracy more than the most used objective V QA models.Abstract:
We describe a new Objective Video Quality Assessment (VQA) metric, consisting of a method based on spatio-temporal saliency to model human visual perception of quality. Accurate measurement of video quality is an important step in many video-based applications. Algorithms that are able to significantly predict human perception of video quality are still needed to evaluate video processing models, in order to overcome the high cost and time requirement for large-scale subjective evaluations. Objective quality assessment methods are used for several applications, such as monitoring video quality in quality control systems, benchmarking video compression algorithms, and optimizing video processing and transmission systems. Objective Video Quality Assessment (VQA) methods attempt to predict an average of human perception of video quality. Therefore subjective tests are used as a benchmark for evaluating the performance of objective models. This paper presents a new VQA metric, called Sencogi Spatio-Temporal Saliency Metric (Sencogi-STSM). This metric generates subjective quality scores of video compression in terms of prediction efficacy and accuracy than the most used objective VQA models. The paper describes the spatio-temporal model behind the proposed metric, the evaluation of its performance at predicting subjective scores, and the comparison with the most used objective VQA metrics.read more
Citations
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Journal ArticleDOI
Video saliency detection via bagging-based prediction and spatiotemporal propagation
TL;DR: Through experiments on two challenging datasets, the proposed model consistently outperforms the state-of-the-art models for popping out salient objects in unconstrained videos.
Book ChapterDOI
UX Evaluation Design of UTAssistant: A New Usability Testing Support Tool for Italian Public Administrations
Stefano Federici,Maria Laura Mele,Rosa Lanzilotti,Giuseppe Desolda,Marco Bracalenti,Fabio Meloni,Giancarlo Gaudino,Antonello Cocco,Massimo Amendola +8 more
TL;DR: A new support tool for usability testing that aims to facilitate the application of eGLU 2.1 and the design of its User eXperience (UX) evaluation methodology, called UTAssistant (Usability Tool Assistant).
Proceedings ArticleDOI
Explicit and Implicit Measures in Video Quality Assessment
TL;DR: A model of video quality assessment which takes into account both explicit and implicit measures of subjective quality is described, which shows that psychophysiological measures are able to measure differences of perceptual quality in compressed videos in terms of number of fixations.
Book ChapterDOI
Sencogi Spatio-Temporal Saliency: A New Metric for Predicting Subjective Video Quality on Mobile Devices
TL;DR: Results show that, compared to the standard VQA metrics, only Sencogi-STSM is able to significantly predict subjective DMOS.
Book ChapterDOI
The Assessment of Sencogi: A Visual Complexity Model Predicting Visual Fixations
TL;DR: This paper compares the complexity maps generated by Sencogi to human fixation maps obtained during a visual quality assessment task on static images and concludes that theSencogi visual complexity model is able to predict human fixations in the spatial domain.
References
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Proceedings ArticleDOI
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