Single image super-resolution with limited number of filters

Yusuke Nakahara, Takuro Yamaguchi, Masaaki Ikehara

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    In this paper, we propose a single image super-resolution with limited number of filters based on RAISR. RAISR is well known as rapid and accurate super-resolution method which utilizes 864 filters for upscaling. This super-resolution idea utilizes the filter learned with sucient training set. To get low cost of calculation and comparable image quality with other highly accurate super-resolution methods, the patch of input image is classified into classes by simple hash calculation. Then, the high quality version of this patch is generated by applying the filter to low resolution patches. In our method, only 18 filters can make high resolution images by using simple geometric conversion and rotation conversion while keeping the accuracy and runtime of RAISR.

    Original languageEnglish
    Title of host publication2018 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2018 - Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages36-40
    Number of pages5
    ISBN (Electronic)9781728112954
    DOIs
    Publication statusPublished - 2019 Feb 20
    Event2018 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2018 - Anaheim, United States
    Duration: 2018 Nov 262018 Nov 29

    Publication series

    Name2018 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2018 - Proceedings

    Conference

    Conference2018 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2018
    CountryUnited States
    CityAnaheim
    Period18/11/2618/11/29

    Keywords

    • Filter learning
    • Image enhancement
    • Super-resolution

    ASJC Scopus subject areas

    • Information Systems
    • Signal Processing

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  • Cite this

    Nakahara, Y., Yamaguchi, T., & Ikehara, M. (2019). Single image super-resolution with limited number of filters. In 2018 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2018 - Proceedings (pp. 36-40). [8646455] (2018 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2018 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/GlobalSIP.2018.8646455