Temat: PEVQ - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: The new, parameterised VT model for determining quality in the video-telephony service
Autorzy:: Uhl, T.
Paulsen, S.
Tematy:: communication networks
communication services
IP transport platform
QoS measurement techniques
VToIP
G.1070
PEVQ; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/202353.pdf Link otwiera się w nowym oknie
Opis:: This paper describes a new method for measuring and appraising the quality of the video stream in the video-telephony service in IP environments (VToIP). The method uses the so-called VS Model and belongs to the group of parameter-based measurement techniques (offline operation, i.e. without active measurement). It delivers results that come extremely close to those contained in the corresponding Perceptual Evaluation of Video Quality (PEVQ) curves. The method is quick and easy to use - a convincing argument for using this new QoS measuring method.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Suitability of Transport Techniques for Video Transmission in IP Networks
Autorzy:: Uhl, Tadeus
Klink, Janusz
Hoppe, Christian
Tematy:: service quality
MPEG2-TS
MPEG-DASH
H.264
H.265
VP9
PEVQ
VQuad-HD; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/226182.pdf Link otwiera się w nowym oknie
Opis:: The paper discusses the problem of video transmission in an IP network. The authors consider the ability of using the most popular video codecs that use both the MPEG2 Transport Stream and Dynamic Adaptive Streaming over Hypertext Transfer Protocol (DASH). The main emphasis was given to ensuring the quality of service and quality assessment methods, taking into account not only the service- or network provider’s point of view but also the end user’s perspective. Two quality assessment approaches were presented, i.e. objective and subjective methods. The authors presented the results of the quality evaluation for H.264/MPEG-4, H.265/HEVC and VP9 codecs.The objective measurements, proved by statistic alanalysis of user opinion scores, conﬁrmed the ability of using H.265 and VP9 codecs in both real time and streaming transmissions, while the quality of video streaming over HTTP with the H.264 codec proved inadequate. The authors also presented a connection between the dynamics of network bandwidth changing and MPEG-DASH mechanism operation and their inﬂuence on the quality experienced by users.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: New Tool for Examining QoS in the VToIP Service
Autorzy:: Uhl, T.
Nowicki, K.
Paulsen, S.
Tematy:: communication network
emulation tool
ITU-T G.1070
PEVQ
QoS measurement
Triple Play services
video streaming
VToIP; Pokaż więcej
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:: https://bibliotekanauki.pl/articles/307757.pdf Link otwiera się w nowym oknie
Opis:: This paper is dedicated to the subject of measuring QoS in the Video Telephony over IP (VToIP) service. QoS measurement models in general and then models designed specifically for measuring QoS in the VToIP service are presented. A new numerical tool for examining the quality of VToIP video streams VToIP is described. The tool’s functionality is then put to the test in a number of analysis scenarios. The results and insights gained from the analyses are then presented in several diagrams, and interpreted. The paper concludes with a summary and an outlook on further areas of work.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Quantifying the Suitability of Reference Signals for the Video Streaming Analysis for IPTV
Autorzy:: Hoppe, C.
Manzke, R.
Rompf, M.
Uhl, T.
Tematy:: communication network
IPVT service
ITU-T J.247
measurement tools
PEVQ
QoS/QoE determination
reference signal
Triple Play Services
VQuad-HD
ITU-T J.341; Pokaż więcej
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:: https://bibliotekanauki.pl/articles/307690.pdf Link otwiera się w nowym oknie
Opis:: IP networks are indispensable nowadays and they are some of the most efficient platforms. The constantly growing number of users and new services in these networks – the largest being the Internet – require a satisfactory quality of service from any application they use. So, determining the QoS in real-time services is particularly important. This work shows how to quantify the suitability of reference signals for analyzing the quality of video streaming in IPTV. The assessment relies on two different algorithms: PEVQ and VQuad-HD. Three different reference signals – two real ones and an artificial one – are used in this study, and a numerical measurement system is used, which simulates mean network impairments. These measurements provide valuable information for determining the QoS of actual IPTV services in practice.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

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