Banca de QUALIFICAÇÃO: HENRIQUE DOMINGUES GARCIA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : HENRIQUE DOMINGUES GARCIA
DATE: 17/05/2024
TIME: 09:00
LOCAL: VIDEOCONFERÊNCIA
TITLE:

Modeling and Evaluation of Tile-Based Adaptive 360-degree Video Streaming

KEY WORDS:

360° video, spherical video, video streaming, ABR, adaptive transmission, dataset, transmission metrics.

PAGES: 61
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUMMARY:

virtual reality glasses on cellular devices. Given that humans perceive only a fraction of the visual sphere, transmitting the entire sphere results in an inefficient use of resources. In this new scenario, spatial segmentation of the video into tiles appears as a solution, accompanied by several new ABR (Adaptive Bit Rate) algorithms using DASH (Dynamic Adaptive Streaming over HTTP). However, evaluating the performance of these algorithms subjectively is a complex task, as each user interaction is unique. This work explores the creation and characterization of a database containing transmission and reproduction metrics, such as decoding time, bit rate and MSE (Mean Squared Error), allowing them to be used in conjunction with head movement recording to evaluate different algorithms under similar conditions. To this end, in addition to the metrics database, a database recording the tiles viewed by each user was developed, together with a Python module for geometric manipulation of the spherical video. Based on these data, several techniques are presented for analyzing and evaluating the emulation of adaptive transmission of 360° videos with tiles

COMMITTEE MEMBERS:
Externo à Instituição - REGINA MELO SILVEIRA - USP
Externa à Instituição - DEBORA CHRISTINA MUCHALUAT SAADE - UFF
Interno - 1323316 - HUGERLES SALES SILVA
Presidente - 1455289 - JOAO YOSHIYUKI ISHIHARA
Interno - 2376576 - PAULO ROBERTO DE LIRA GONDIM