| Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
| CQ |
2019-07-18
10:45 |
Niigata |
Niigata Univ. |
Viewing-abandonment-factor Estimation for Adaptive Bitrate Video Streaming
Shoko Takahashi, Kazuhisa Yamagishi (NTT) |
Recently, adaptive bitrate video streaming services have spread widely. However, in spite of realizing smoother playbac... [more] |
CQ2019-36
pp.19-24 |
| CQ |
2019-07-19
09:30 |
Niigata |
Niigata Univ. |
An applicability of ITU-T Recommendation P.1203 model to VR video streaming
Yuichiro Urata, Masanori Koike, Kazuhisa Yamagishi (NTT) |
Recently, omnidirectional video streaming has spread widely, the quality of experience (QoE) monitoring is desirable. Th... [more] |
CQ2019-52
pp.79-83 |
IMQ, IE, MVE, CQ
(Joint) [detail] |
2019-03-14
15:10 |
Kagoshima |
Kagoshima University |
A Study on Objective Quality Estimation Model for Tile-based VR Video Streaming Services
Masanori Koike, Yuichiro Urata, Kazuhisa Yamagishi (NTT) |
In tile-based VR video distribution service with a head-mounted display, users perceive the quality degradation due to w... [more] |
CQ2018-102
pp.55-59 |
| CQ |
2018-07-19
15:30 |
Miyagi |
Tohoku Univ. |
[Tutorial Invited Lecture]
Standardization Trends in ITU-T SG12
Kazuhisa Yamagishi (NTT) |
Study on performance, quality of service (QoS) and quality of experience (QoE) became increasingly
important due to adv... [more] |
CQ2018-34
pp.19-23 |
CQ, CS
(Joint) |
2018-04-20
09:45 |
Hiroshima |
Hiroshima Institute of Technology |
Relationship among quality factors and viewing time for adaptive-bitrate-video-streaming services
Kimiko Kawashima, Kazuhisa Yamagishi (NTT) |
[more] |
CQ2018-8
pp.41-45 |
CQ, MVE, IE, IMQ
(Joint) [detail] |
2018-03-09
09:30 |
Okinawa |
Okinawa Industry Support Center |
Analysis of Factors Affecting Viewing Time of Adaptive Bitrate Video Streaming Services
Shoko Takahashi, Kimiko Kawashima, Kazuhisa Yamagishi (NTT) |
In the adaptive bitrate video streaming services for mobile terminals, application quality degradation leads not only to... [more] |
CQ2017-117
pp.81-86 |
ICM, CQ, NS, NV
(Joint) |
2017-11-17
09:15 |
Kagawa |
|
Analysis of User Manipulation for Adaptive Bitrate Video Streaming Services
Shoko Takahashi, Kimiko Kawashima, Kazuhisa Yamagishi (NTT) |
In the adaptive bitrate video streaming services for mobile terminals, quality degradation leads not only to the deterio... [more] |
CQ2017-77
pp.39-44 |
MVE, IE, CQ, IMQ
(Joint) [detail] |
2017-03-07
10:35 |
Fukuoka |
Kyusyu Univ. Ohashi Campus |
Subjective Assessment Characteristics of Watching 4K and Full HD videos
Kimiko Kawashima, Kazuhisa Yamagishi, Takanori Hayashi (NTT) |
[more] |
CQ2016-123
pp.83-88 |
| CQ |
2016-07-26
14:30 |
Osaka |
The Osaka Umeda Campus, Kwansei Gakuin Univesity |
Analysis on Stability of Subjective Assessment Method for Video Quality
Kimiko Kawashima, Kazuhisa Yamagishi, Takanori Hayashi (NTT) |
[more] |
CQ2016-36
pp.19-23 |
MVE, IE, WIT, IMQ, CQ
(Joint) [detail] |
2013-03-12
12:00 |
Fukuoka |
Fukuoka Institute of Technology |
Validity verification of ITU-T Recommendation P.1201.1 Model Extended for Video Resolution
Yuichiro Urata, Kazuhisa Yamagishi (NTT) |
To monitor video quality for progressive download services, we study a video quality estimation model. A video quality e... [more] |
CQ2012-94
pp.59-63 |
MoNA, CQ
(Joint) |
2012-09-28
10:40 |
Kagawa |
Kagawa pref. Takamatsu-city |
Performance comparison of subjective quality assessment method for 3D video
Taichi Kawano, Kazuhisa Yamagishi (NTT) |
Recently, 3D video services have become popular. It is important for service providers to design an application and netw... [more] |
CQ2012-51
pp.53-58 |
| CQ |
2011-07-14
15:15 |
Hokkaido |
Otaru civic hall |
Quality-estimation model for stereoscopic video services
Kazuhisa Yamagishi (NTT), Lina Karam (Arizona State Univ.), Jun Okamoto (NTT) |
[more] |
CQ2011-23
pp.29-32 |
| PRMU, SP, MVE, CQ |
2010-01-21
13:40 |
Kyoto |
Kyoto Univ. |
No reference media layer video quality assessment model for IPTV services
Taichi Kawano, Kazuhisa Yamagishi, Jun Okamoto (NTT) |
[more] |
CQ2009-76 PRMU2009-175 SP2009-116 MVE2009-98
pp.137-142 |
CS, CQ
(Joint) |
2008-04-25
09:30 |
Aomori |
Hirosaki University |
In-service video quality estimation model for mobile video streaming
Kazuhisa Yamagishi, Takanori Hayashi (NTT Service Integration Laboratories) |
Non-intrusive parametric packet-layer model is required to monitor the quality of experience (QoE) during service. In Vo... [more] |
CQ2008-6
pp.29-34 |
USN, CQ, MoNA
(Joint) |
2008-01-25
16:00 |
Shizuoka |
Kenshu Kouryu Center, Actcity Hamamatsu (Shizuoka) |
Non-intrusive video quality estimation model for IPTV services
Kazuhisa Yamagishi, Takanori Hayashi (NTT) |
[more] |
CQ2007-94
pp.77-80 |
| CQ |
2007-07-13
15:00 |
Hokkaido |
Shiretoko Prince Hotel Kazenamiki |
Video Quality Estimation Model for IPTV Services
Kazuhisa Yamagishi, Takanori Hayashi (NTT) |
Advances in broadband IP networks and codecs have enabled video streaming services over IP network (IPTV). In order to p... [more] |
CQ2007-35
pp.123-126 |
| CQ |
2007-07-13
15:25 |
Hokkaido |
Shiretoko Prince Hotel Kazenamiki |
A Proposal of Multimedia Quality Integration Function for Videophone Services
Takanori Hayashi, Kazuhisa Yamagishi, Toshiko Tominaga (NTT) |
With the advances in IP and multimedia technologies, various multimedia services such as videophone and video-streaming ... [more] |
CQ2007-36
pp.127-131 |
| CQ |
2006-07-14
09:35 |
Hokkaido |
Future University-Hakodate |
A Proposal of Video Quality Opinion Model for Audiovisual Communication Services
Kazuhisa Yamagishi, Takanori Hayashi (NTT) |
Advances in broadband IP networks and codecs have enabled audiovisual communication services such as videophones, instan... [more] |
CQ2006-28
pp.61-65 |
CS, CQ
(Joint) |
2006-04-17
13:50 |
Akita |
Akita Univ. |
Effects of Network QoS Guarantee in Video Communications
Takanori Hayashi, Kazuhisa Yamagishi, Masataka Masuda, Toshiko Tominaga, Hitoshi Aoki, Hirofumi Yokoi (NTT) |
With the bandwidth of access lines to the Internet becoming broader, various video communication services are being deve... [more] |
CQ2006-3
pp.9-12 |
| CQ, IE, LOIS, IEE-CMN, ITE-ME |
2005-09-16
14:00 |
Kochi |
Kochi Univ. of Technoloty |
Video Quality Estimation Model based on Displaysize and Resolution for Audiovisual Communication Services
Kazuhisa Yamagishi, Takanori Hayashi (NTT) |
With the advances in broadband IP technology, audiovisual communication services have become popular as promising rich m... [more] |
CQ2005-60 OIS2005-45 IE2005-53
pp.61-64 |