CNN-based super-resolution adapted to quantization parameters

Toshiya Hori, Zichen Gong, Hiroshi Watanabe, Tomohiro Ikai, Takeshi Chujoh, Eiichi Sasaki, Norio Ito

研究成果: Conference contribution

抜粋

In video transmission, the videos are encoded and decoded. At that time, bit control is performed by specifying the quantization parameter (QP). The video undergoes various processing to remove redundancy and then orthogonally transforms the video signal into the frequency domain. The frequency domain coefficients are then quantized and transmitted. At that time, by specifying QP, the quantization step is changed, and the amount of data can be changed. In an opinion, a codec using super-resolution is proposed. At the CNN based super-resolution of encoded images, the degradation of the input image due to encoding depends on the characteristics of the image. As a result, there is a problem that the weights of the optimal CNN for the input image changes depending on the image characteristics. In order to solve this problem, we propose a method to adaptively perform super-resolution corresponding to image degradation.

元の言語English
ホスト出版物のタイトルInternational Workshop on Advanced Imaging Technology, IWAIT 2020
編集者Phooi Yee Lau, Mohammad Shobri
出版者SPIE
ISBN(電子版)9781510638358
DOI
出版物ステータスPublished - 2020
イベントInternational Workshop on Advanced Imaging Technology, IWAIT 2020 - Yogyakarta, Indonesia
継続期間: 2020 1 52020 1 7

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
11515
ISSN(印刷物)0277-786X
ISSN(電子版)1996-756X

Conference

ConferenceInternational Workshop on Advanced Imaging Technology, IWAIT 2020
Indonesia
Yogyakarta
期間20/1/520/1/7

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • これを引用

    Hori, T., Gong, Z., Watanabe, H., Ikai, T., Chujoh, T., Sasaki, E., & Ito, N. (2020). CNN-based super-resolution adapted to quantization parameters. : P. Y. Lau, & M. Shobri (版), International Workshop on Advanced Imaging Technology, IWAIT 2020 [115151U] (Proceedings of SPIE - The International Society for Optical Engineering; 巻数 11515). SPIE. https://doi.org/10.1117/12.2566911