IPTV levering audio description

Transcription

1 IPTV levering audio description Rita Oliveira Jorge Ferraz de Abreu Ana Margarida Almeida CETAC.MEDIA DeCA University of Aveiro [ritaoliveira, jfa,

2 Summary Research Context Methodological Process Goals Achievements Outcomes Prototype System Architecture Features Future Work 2

3 Research Context what is audio description?

4 Research Context portuguese census data 1.6% of the portuguese population suffers from visual impairment (about citizens)

5 Research Context AD services in spite of the upgrades performed on TV audio description services they may still be subject to a set of improvements

6 Research Context AD in portugal the existing free public audio description service is still analogue and broadcasted by radio signal in DTT

7 Research Context research conceptualization, prototyping and validation of the interaction model of an audio description service in an itv context 7

8 Methodological Process phases and goals Phases 1st Phase 2nd Phase 3rd Phase Goals Theoretical Framework and Context Analysis Goal #1 #2 #3 and #4 Prototype Conceptualisation and Development Goal #5 Prototype Testing and Evaluation Goal #6 accomplished phases 8

9 Methodological Process goal #1? to identify and characterize the specificities and needs of VIU as consumers of television contents 9

10 Methodological Process goal#1: achievements 20 semi-structured interviews to: 10 blind participants and 10 low vision participants 10

11 Methodological Process goal#1: achievements I General Data II TV Consumption Patterns and AD III TV Access Problems IV DTT and itv 11

12 Methodological Process goal #2 to analyze the interaction design of existing audio description services 12

13 Methodological Process goal #2: achievements focus group with 6 participants to evaluate the Portuguese public audio description service 13

14 Methodological Process goal #2: achievements I General Data II Influence of the Previous Interview III Interaction Experience 14

15 Methodological Process goal #1 and #2: outcomes specification of the functional requirements: Flexibility and Adaptability Audio Feedback Contextual Help Audio Description Customization System Personalization User Automatic Identification 15

16 Methodological Process goal #3 to analyze and understand the functional and technological context of DTT 16

17 Methodological Process goal #3: achievements interview to an engineer who manages the transition to the Digital Terrestrial Television in Portugal 17

18 Methodological Process goal #3: outcomes specification of the technical requirements non-adoption of a DTT solution and implementation of an IPTV service, using the MEO IPTV infrastructure that is available at the labs.sapo/ua research lab

19 Methodological Process goal #4 to identify the appropriate design principles for the development of an interactive audio description service 19

20 Methodological Process goal #4: achievements Content analysis of the obtained findings in the goals #1 and #2 Documentary analysis of design principles for the development of itv services 20

21 Methodological Process goal #4: outcomes adoption of some principles to develop itv services: Springett and Griffiths (2007): based on accessibility guidelines of the World Wide Web Consortium (W3C) Chorianopoulos (2008): user interface design Rice (2003/2004): addressed to visually impaired users Perera (2003): addressed to visually impaired users 21

22 Methodological Process goal #5 to conceptualize and prototype the interaction model of an audio description service in an itv context 22

23 Methodological Process goal #5: achievements development at MS Visual Studio (.NET framework) through C# language and testing at MS Mediaroom Simulator 23

24 Prototype technical requirements Development Environment IPTV Server Infrastructure Regular IPTV Service IP Networking IPTV Audio Description Service (AD sound) TV content sound AD sound IPTV STB IPTV Audio Description Service (font-size adjustment) TV content sound IPTV STB Font-size adjustment IPTV STB 24

25 Prototype welcome screen 25

26 Prototype how to 26

27 Prototype menu options 27

28 Prototype menu options 28

29 Prototype colour scheme option 29

30 Prototype colour scheme option 30

31 Future Work goal #6 testing and evaluation of the prototype with the help of a group of VIU in order to adjust its features to their needs 31

32 Thank you! Rita Oliveira Jorge Ferraz de Abreu Ana Margarida Almeida

33 Any Question?