Colorization-based image coding based on superpixel

Shoji Sakamoto, Takanori Fujisawa, Masaaki Ikehara

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

    1 Citation (Scopus)

    Abstract

    This paper proposes a novel colorization-based color image coding method. This method segments an input image into small segments called superpixels and restores the chrominance of each superpixel as the linear transformation of its luminance. A lot of color image coding methods using colorization have been proposed, but no methods utilize a local correlation between the luminance component and the chrominance component effectively. Therefore conventional methods cannot recover the information of local variation and the output image becomes excessively smoothed. We introduce the region segmentation to suppress large fluctuations in the segmented area. This segmentation makes possible to restore the chrominance from the luminance using a linear transformation. The simulation with some standard images shows that the framework actually performs better result than the conventional algorithms based on JPEG.

    Original languageEnglish
    Title of host publication2015 10th International Conference on Information, Communications and Signal Processing, ICICS 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781467372183
    DOIs
    Publication statusPublished - 2016 Apr 26
    Event10th International Conference on Information, Communications and Signal Processing, ICICS 2015 - Singapore, Singapore
    Duration: 2015 Dec 22015 Dec 4

    Other

    Other10th International Conference on Information, Communications and Signal Processing, ICICS 2015
    CountrySingapore
    CitySingapore
    Period15/12/215/12/4

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Information Systems
    • Signal Processing

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  • Cite this

    Sakamoto, S., Fujisawa, T., & Ikehara, M. (2016). Colorization-based image coding based on superpixel. In 2015 10th International Conference on Information, Communications and Signal Processing, ICICS 2015 [7459954] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICICS.2015.7459954