Pham Ngoc Nam, PhD: Recent submissions
Now showing items 1-20 of 21
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Retina-based quality assessment of tile-coded 360-degree videos
(2022-06-21)Nowadays, omnidirectional content, which delivers 360-degree views of scenes, is a significant aspect of Virtual Reality systems. While 360 video requires a lot of bandwidth, users only see visible tiles, therefore a large ... -
An effective foveated 360° image assessment based on graph convolution network
(2022-09-06)Virtual reality (VR) has been adopted in various fields such as entertainment, education, healthcare, and the military, due to its ability to provide an immersive experience to users. However, 360° images, one of the main ... -
Flexible HTTP-based Video Adaptive Streaming for good QoE during sudden bandwidth drops
(2023)We have observed a boom in video streaming over the Internet, especially during the Covid-19 pandemic, that could exceed the network resource availability. In addition to upgrading the network infrastructure, finding a way ... -
An Evaluation of the Impact of Distance on Perceptual Quality of Textured 3D Meshes
(2024-01)Distance-aware quality adaptation is a potential approach to reduce the resource requirement for the transmission and rendering of textured 3D meshes. In this paper, we carry out a subjective experiment to investigate the ... -
QoE-Aware Video Streaming over HTTP and Software Defined Networking
(2019)Due to the increase in video streaming traffic over the Internet, more innovative methods are in demand for improving both Quality of Experience (QoE) of users and Quality of Service (QoS) of providers. In recent years, ... -
Flexible HTTP-based video adaptive streaming for good QoE during sudden bandwidth drops
(2023)We have observed a boom in video streaming over the Internet, especially during the Covid-19 pandemic, that could exceed the network resource availability. In addition to upgrading the network infrastructure, finding a way ... -
QoE-aware video streaming over HTTP and software-defined networking
(2019)The exponential growth in video streaming traffic over the Internet has created a demand for innovative methods to enhance both Quality of Experience (QoE) for users and Quality of Service (QoS) for providers. HTTP Adaptive ... -
Overall quality prediction for HTTP adaptive streaming using LSTM network
(2021-08)HTTP Adaptive Streaming (HAS) has become a widely adopted method for delivering multimedia content. However, the variability in network bandwidth often results in fluctuating video quality during streaming, posing a ... -
A Subjective Study on User Perception Aspects in Virtual Reality
(2019-08-16)Three hundred and sixty degree video is becoming more and more popular on the Internet. By using a Head-Mounted Display, 360-degree video can render a Virtual Reality (VR) environment. However, it is still a big challenge ... -
The title of the paper is: **A Quantitative Analysis of the Effect of Human Detection and Segmentation Quality in Person Re-identification Performance**
(2019)Person re-identification, a problem of person identity association across camera views at different locations and times, is the second step in two-steps system for automatic video surveillance: person detection, tracking ... -
An Effective Foveated 360◦ Image Assessment Based on Graph Convolution Network
(2022-09-04)Virtual reality (VR) has been adopted in various fields such as entertainment, education, healthcare, and the military, due to its ability to provide an immersive experience to users. However, 360◦ images, one of the main ... -
A Weighted Viewport Quality Metric for Omnidirectional Images
(2020-01-01)Thanks to the ability to bring immersive experiences to users, Virtual Reality (VR) technologies have been gaining popularity in recent years. A key component in VR systems is omnidirectional content, which can provide ... -
Towards an Overall QoE Model for 360-Degree Video
(2021-01-13)Although 360-degree video is becoming more and more popular on the Internet, understanding of Quality of Experience (QoE) of 360-degree video is still limited. In this paper, we aim to investigate for the first time the ... -
SDN – based Dynamic Bandwidth Allocation for Multiple Video-on-Demand Players over HTTP
(2019)Nowadays, HTTP adaptive streaming (HAS) has become the standard for video streaming over multimedia networks. However, HAS alone cannot ensure a seamless viewing experience. The adaptation of HAS in network management faces ... -
Scalable 360 Video Streaming using HTTP/2
(2019-07)360-degree video is the primary content type in Virtual Reality, offering users an immersive viewing experience. This paper introduces a novel adaptation method for streaming 360-degree video over HTTP/2, aimed at enhancing ... -
Retina-based quality assessment of tile-coded 360-degree videos
(2022-06-21)Nowadays, omnidirectional content, which delivers 360-degree views of scenes, is a significant aspect of Virtual Reality systems. While 360 video requires a lot of bandwidth, users only see visible tiles, therefore a large ... -
QoE Models for Adaptive Streaming: A Comprehensive Evaluation
(2022-05-13)Adaptive streaming has become a key technology for various multimedia services, such as online learning, mobile streaming, Internet TV, etc. However, because of throughput fluctuations, video quality may be dramatically ... -
Network-aware Prefetching Method for Short-Form Video Streaming
(2022-09-07)Recent years have witnessed the rising popularity of short-form video platforms such as TikTok. Unlike conventional videos, short-form videos are significantly shorter, and users frequently switch between content. Therefore, ... -
Cumulative Quality Modeling for HTTP Adaptive Streaming
(2021-04)HTTP Adaptive Streaming has become the de facto choice for multimedia delivery. However, the quality of adaptive video streaming may fluctuate strongly during a session due to throughput fluctuations. So, it is important ... -
An LSTM-based Approach for Overall Quality Prediction in HTTP Adaptive Streaming
(2019-04)HTTP Adaptive Streaming (HAS) has become a popular solution for multimedia delivery nowadays. In HAS, video quality is generally varying in each streaming session. Therefore, a key question in HTTP Adaptive Streaming is ...
