디지털융복합연구 (Journal of Digital Convergence)

  • 제16권12호
  • /
  • Pages.283-292
  • /
  • 2018
  • /
  • 2713-6434(pISSN)
  • /
  • 2713-6442(eISSN)
한국디지털정책학회 (The Society of Digital Policy and Management)
권호 표지
DOI QR코드

DOI QR Code

화면크기와 콘텐츠유형에 따른 주관적 영상품질 평가와 이용자 만족도: UHD와 UWV 비교 분석

Subjective Video Quality Evaluation and User Satisfaction according to Screen Size and Content Type : Comparison of UHD and UWV

  • Cho, EunSun (Dept. of Consumer Science, Seoul National University) ;
  • Lee, Jin-Myong (Dept. of Consumer Science, Chungnam National University) ;
  • Rha, Jong-Youn (Dept. of Consumer Science, Seoul National University) ;
  • Park, Sunny (Dept. of Consumer Science, Seoul National University) ;
  • Koo, Hye-Gyoung (Dept. of Consumer Science, Chungnam National University) ;
  • Cho, YongJu (Tera-media Research Group, Electronics and Telecommunications Research Institute) ;
  • Seo, Jung-Il (Tera-media Research Group, Electronics and Telecommunications Research Institute)
  • 투고 : 2018.09.07
  • 심사 : 2018.12.20
  • 발행 : 2018.12.28
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

우리나라가 세계 최초로 상용화한 초고화질의 UHD 방송기술과 UHD 기반 파노라마 영상기술인 UWV는 이용자의 실재감을 극대화하는 대표적인 실감영상 기술이다. 본 연구는 UHD와 UWV에 대한 이용자들의 주관적 반응을 다각도로 비교 분석함으로써 UWV의 영상품질을 체계적으로 평가하는 것을 목적으로 한다. 이를 위해 화면크기(4k x 2k, 8k x 2k)와 콘텐츠유형(스포츠영상, 풍경영상, 공연영상)에 따른 대화면 프로젝션 실험을 설계하고 UHD와 UWV에 대한 이용자의 주관적 영상품질 평가 및 만족도를 측정하였다. 연구결과, 주관적 영상품질과 만족도의 모든 항목에 있어서 UHD에 비해 UWV에 대한 이용자의 평가가 긍정적인 것으로 나타났으며, 세부 평가는 영상 콘텐츠유형에 따라 유의한 차이를 보였다. 연구결과를 바탕으로 UWV 파노라마 기술이 발전 및 상용화되는데 필요한 점들과 후속 연구 시 고려해야할 사항을 제언하였다.

UHD (Ultra High Definition) broadcasting technology, and UWV (Ultra Wide Vision) which is the high quality panoramic video of wide view angle based on UHD, were commercialized in Korea for the first time in the world, and those are representative realistic video technologies that maximize the user's sense of presence. By comparing the user's subjective reaction of UHD and UWV, the purpose of this study is to systematically establish the user's subjective video quality evaluation. For this purpose, a large screen projection experiment is designed by setting the screen size (4k x 2k, 8k x 2k) and content types (sports, landscape, concert) as variables to measure the user's subjective video quality evaluation and satisfaction. As a result of the study, the users' evaluation of UWV was higher than UHD in all items of subjective video quality, and satisfaction. Moreover, the results showed the significant differences depending on the video contents. Based on the results of the research, the study proposed the points necessary for the development and commercialization of UWV panoramic technology, and suggestions for the future research.

키워드

DJTJBT_2018_v16n12_283_f0001.png 이미지

Fig. 1. Research Environment

DJTJBT_2018_v16n12_283_f0002.png 이미지

Fig. 2. Contents for Research

DJTJBT_2018_v16n12_283_f0003.png 이미지

Fig. 3. Research scenario

DJTJBT_2018_v16n12_283_f0004.png 이미지

Fig. 4. Results of Interaction Effects

DJTJBT_2018_v16n12_283_f0005.png 이미지

Fig. 5. Results of Interaction Effects

Table 1. Contents and Screen Size for Research

DJTJBT_2018_v16n12_283_t0001.png 이미지

Table 2. General Characteristics of Participants

DJTJBT_2018_v16n12_283_t0002.png 이미지

Table 3. Comparison of Subjective Video Quality Assessments Between UHD and UWV

DJTJBT_2018_v16n12_283_t0003.png 이미지

Table 4. Comparison of Satisfaction Between UHD and UWV

DJTJBT_2018_v16n12_283_t0004.png 이미지

참고문헌

  1. Ministry of Science and ICT &National Information Society Agency. (2018). PyeongChang ICT Olympics: Guidebook.
  2. Ministry of Science, ICT and Future Planning. (2016). Creation of New Contents Market such as Virtual Reality (VR) through Support of Exhibition and Commercialization of SME Contents. http://www.msip.go.kr
  3. G. H. Park. (2018). Enjoy Live Sports Broadcasts with Wide-screen Video. The Korea Information & Telecommunication Times. http://www.koit.co.kr/news/articleView.html?idxno=72874
  4. J. M. Lee, J. Y. Rha, H. G. Koo, Y. J. Cho & J. I. Seo. (2017). Consumer Responses to UWV Panoramic Video and Policy Suggestions.", Consumer Policy and Education Review, 12(2), 79-102.
  5. STEPI. (2008), User Innovations and Innovation System.
  6. J. I. Seo, J. M. Seok, Y. J. Cho, H. C. Kim & S. W. Ahn. (2017). Current Status on UWV Live Broadcasting System Development for Trial Service at Pyeongchang Winter Olympic Game. Proceedings of Symposium of 2017 The Korean Institute of Broadcast and Media Engineers Summer Conference (pp. 121-122).
  7. J. M. Seok, S. Y. Lim & J. I. Seo. (2017). Multiple-camera based shooting technology for a Wide Video. Proceedings of Symposium of 2017 the Korean Institute of communications and Information Sciences (pp. 703-704).
  8. S. N. Park, J. M Lee, J. Y. Rha, E. S. Cho, H. G. Koo, Y. J. Cho & J. I. Seo. (2018). A Study on Consumer Preference and Willingness to Pay for UWV Panoramic Video. Journal of Digital Convergence, 16(1), 135-146. https://doi.org/10.14400/JDC.2018.16.1.135
  9. I. K. Park, K. S. Ha, M. C. Kim, S. K. Cho & J. S. Choi. (2010). Analysis on Subjective Image Quality Assessments for 4K-UHD Video Viewing Environments. Journal of Broadcast Engineering, 15(4), 563-581. https://doi.org/10.5909/JBE.2010.15.4.563
  10. S. H. Kim. (2007). Determinant Factors Including Functional Attributes for Accepting Digital Multimedia Broadcasting Service. Journal of Information Technology Applications & Management, 14(4), 61-74.
  11. M. J. Lee & D. H. Chung. (2012). Influence of 3D Stereoscopic Video Running Time on Audience Perceptions. Journal of Broadcast Engineering, 17(4), 551-564. https://doi.org/10.5909/JBE.2012.17.4.551
  12. W. J. Kim, C. I. Kim, J. S. Kim, H. W. Lee & W. Ryu. (2008). Research for Measuring Degradation of IPTV-serviced Videos. Journal of Broadcast Engineering, 13(4), 440-451. https://doi.org/10.5909/JBE.2008.13.4.440
  13. J. H. Choi. (2007). Comparison of Subject Quality of Various Display Devices. Journal of Broadcasting Engineering, 12(3), 242-249. https://doi.org/10.5909/JBE.2007.12.3.242
  14. M. H. Pinson & S. Wolf. (2003). Comparing Subjective Video Quality Testing Methodologies. In Visual Communications and Image Processing 2003. International Society for Optics and Photonics (pp. 573-582).
  15. W. Y. Jung, J. C. Kim, S. Y. Ha & S. C. Park. (2011). A Study on Subjective Assessment Method over IPTV Service. Korea Next Generation Computing Society, 7(2), 40-49.
  16. S. W. Youn, J. H. Ok, D. H. Yim, T. H. Han & C. H. Lee. (2013). Subjective Video Quality Comparison of 3D Display Monitors. Journal of Broadcast Engineering, 18(3), 416-424. https://doi.org/10.5909/JBE.2013.18.3.416
  17. S. Y. Ha, C. C. Kim, D. J. Shin, Y. H. Jo & B. H. Roh. (2011). Video QoE Measurement Algorithm by Parameter Matching for IPTV Services. The Journal of Korean Institute of Communications and Information Sciences, 36(5), 451-463.
  18. M. S. Kim, H. G. Kim & J. H. Kim. (2013). The Effects of Innovative Products' Value Congruence on Relationship Quality and Acceptance Intention: With a Focus on Mediating Effects by the Tendency of Early Adopters. Korean Broadcasting Communication Research, 27(1), 131-166.
  19. J. W. Jun & Y. S. Cheon. (2011). Uses and Gratifications of 3D Content and Relationships with Presence, Consumers' Attitudes, and Purchase Intentions. The Korean Journal of Advertising and Public Relations, 91, 96-122.
  20. B. Ciubotaru, G. M. Muntean & G. Ghinea. (2009). Objective Assessment of Region of Interest-aware Adaptive Multimedia Streaming Quality. IEEE Transactions on Broadcasting, 55(2), 202-212. https://doi.org/10.1109/TBC.2009.2020448
  21. C. Jennett, A. L. Cox, P. Cairns, S. Dhoparee, A. Epps, T. Tijs & A. Walton. (2008). Measuring and Defining the Experience of Immersion in Games. International Journal of Human-computer Studies, 66(9), 641-661. https://doi.org/10.1016/j.ijhcs.2008.04.004
  22. ITU-T. (1999). Subjective Video Quality Assessment Methods for Multimedia Applications, International Telecommunications Union (pp. 910)
  23. D. K. Park. (2002). ANOVA with Repeated Measures Data. Seoul: Minyoungsa.