Realtime Super Resolution for 4K/8K with Nonlinear Signal Processing

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE Mot. Imag J.
Volume: 124, No. 7, pp. 51–56
Abstract: The 8K system is intended to be the ultimate high-resolution broadcasting system. However, 8K equipment is still under development, and there will be a lack of 8K content once broadcasting begins. It would thus be very useful if 4K content could be converted to a sufficient resolution level to be viewed on 8K systems. Conventional upconverters, from standard-definition television to high-definition television, change the video format with interpolation technology and enhancers. They cannot create higher frequency elements than those of the original content. The same problem affects upconverted 8K content; simply upconverting 4K to 8K does not produce high-resolution 8K content. This paper describes a 4K-to-8K upconverter that uses a novel form of super resolution (SR) technology. The SR technology creates frequency elements that are higher than those of the original 4K content. It can even create elements above the Nyquist frequency, which had been considered a theoretical limitation. The 4K-to-8K upconverter can create content with the same resolution as that of an 8K camera operated in realtime.
Publication Date: 2015-10-01
DOI: 10.5594/j18614
ISSN: Print: 1545-0279 | Electronic: 2160-2492
Link: https://doi.org/10.5594/j18614
Author(s): Seiichi Gohshi
bio
Seiichi Gohshi is a professor at Kugakuin University. He received a B.S., M.S. and Ph.D. degree from Waseda University in 1979, 1981, and 1997, respectively. He joined Japan Broadcasting Corporation (NHK) in 1981, where he started his research at NHK Science Technical Research Laboratories (STRL) in 1984. He helped to develop the HDTV broadcasting system, transmission systems, and signal processing systems. He was the project leader of the Super Hi-Vision (8K) transmission system and successfully conducted the first Super Hi-Vision transmission test at IBC 2008. He also developed a watermark system that was used in movie theaters. Gohshi joined Sharp Corporation as a division deputy general manager in 2008 and developed high-resolution systems. He is currently a professor of Kogakuin University. His research interests are video and image signal processing especially for super resolution and forensic technologies.
Keyword(s): 8K, 4K
Copyright: © 2015 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

J-S. Lee, “Digital Image Enhancement and Noise Filtering by Use of Local Statistics,” IEEE Trans. Pattern Analysis and Machine Intelligence, 2:165-168, Mar. 1980. EXTERNAL
Seiichi Gohshi and Isao Echizen, “Subjective Assessment for HDTV with Super-Resolution Function,” VPQM 2013, pp. 32-36, Jan. 2013. EXTERNAL
Seiichi Gohshi, “Limitation of Super Resolution Image Reconstruction for Video,” IEEE Computer Soc. CICSYN2013, pp. 217-221, June 2013. First presented at IBC 2014, Amsterdam, The Netherlands, 11-15 September 2014. This paper is published here by kind permission of the IBC. Copyright © IBC. EXTERNAL
Seiichi Gohshi, Shinichiro Nakamura, and Jin Ogasawara, “Real-Time Up-Converter from HDTV to 4K with Super Resolution,” Soc. Information Display SID 2013 Digest, 42(2):582-585, May 23, 2013. EXTERNAL
Seiichi Gohshi, “A New Signal Processing Method for Video: Reproduce the Frequency Spectrum Exceeding the Nyquist Frequency,” MMSys’12, pp. 47-52, Chapel Hill, NC, Feb. 22, 2012. EXTERNAL
Toshiba, http://www.toshiba.co.jp/regza/detail/superresolution/resolution.html (in Japanese). EXTERNAL
W. F. Schreiber, “Wirephoto Quality Improvement by Unsharp Masking,” J. Pattern Recognition, 2:111-121, 1970. EXTERNAL
Wilhelm Burger and Mark J. Burge, Principles of Digital Image Processing, pp. 221, 229, 231, 254, Springer-Verlag: London, 2009. EXTERNAL

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Seiichi Gohshi; Realtime Super Resolution for 4K/8K with Nonlinear Signal Processing, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 7, October 2015); SMPTE, 2015. Available at https://doi.org/10.5594/j18614

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Seiichi Gohshi; Realtime Super Resolution for 4K/8K with Nonlinear Signal Processing, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 7, October 2015); SMPTE, 2015. Available at https://doi.org/10.5594/j18614

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<span class="citation">Seiichi Gohshi; <cite>Realtime Super Resolution for 4K/8K with Nonlinear Signal Processing</cite>, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 7, October 2015); SMPTE, 2015. Available at <a href="https://doi.org/10.5594/j18614" target="_blank" rel="noopener">https://doi.org/10.5594/j18614</a></span>

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Seiichi Gohshi; Realtime Super Resolution for 4K/8K with Nonlinear Signal Processing, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 7, October 2015); SMPTE, 2015
doi: 10.5594/j18614
url: https://doi.org/10.5594/j18614

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Seiichi Gohshi; <cite id="bib-10-5594-j18614">Realtime Super Resolution for 4K/8K with Nonlinear Signal Processing</cite>, SMPTE Motion Imaging Journal ( Volume: 124, Issue: 7, October 2015); SMPTE, 2015
<span class="doi">10.5594/j18614</span>
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