A study on two-layer coding for animation images

Ouji Nakagami, Toshinori Miyazwa, Hiroshi Watanabe, Hideyoshi Tominaga

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

    3 Citations (Scopus)

    Abstract

    A coding scheme specifically designed for animation images is proposed. Taking the characteristics of animation images into account, lines and homogeneous color regions are extracted from animation images. Lines and contours of the homogeneous color regions are approximated by straightline and spline functions. We found that smoothing operations are effective to extract homogeneous regions from background images. A connected filter is used for the smoothing operation while keeping edges of the original image correctly. Precise approximation of the contours is also required. For this purpose, we propose to use dynamic programming with a feedback algorithm. As a result, an animation image can be represented by two layers; significant points as a base layer, and discrete cosine transform (DCT) blocks for an additional layer. For the compensation of the loss caused by the smoothing operation, the DCT is applied to the difference between the original images and lines and homogeneous color regions images. High-quality images can be obtained by adding this differential data to the approximated images.

    Original languageEnglish
    Title of host publicationProceedings - 2002 IEEE International Conference on Multimedia and Expo, ICME 2002
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages621-624
    Number of pages4
    Volume1
    ISBN (Print)0780373049
    DOIs
    Publication statusPublished - 2002
    Event2002 IEEE International Conference on Multimedia and Expo, ICME 2002 - Lausanne
    Duration: 2002 Aug 262002 Aug 29

    Other

    Other2002 IEEE International Conference on Multimedia and Expo, ICME 2002
    CityLausanne
    Period02/8/2602/8/29

    Fingerprint

    Animation
    Discrete cosine transforms
    Color
    Dynamic programming
    Splines
    Image quality
    Feedback
    Layer

    ASJC Scopus subject areas

    • Archaeology
    • Electrical and Electronic Engineering

    Cite this

    Nakagami, O., Miyazwa, T., Watanabe, H., & Tominaga, H. (2002). A study on two-layer coding for animation images. In Proceedings - 2002 IEEE International Conference on Multimedia and Expo, ICME 2002 (Vol. 1, pp. 621-624). [1035858] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICME.2002.1035858

    A study on two-layer coding for animation images. / Nakagami, Ouji; Miyazwa, Toshinori; Watanabe, Hiroshi; Tominaga, Hideyoshi.

    Proceedings - 2002 IEEE International Conference on Multimedia and Expo, ICME 2002. Vol. 1 Institute of Electrical and Electronics Engineers Inc., 2002. p. 621-624 1035858.

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

    Nakagami, O, Miyazwa, T, Watanabe, H & Tominaga, H 2002, A study on two-layer coding for animation images. in Proceedings - 2002 IEEE International Conference on Multimedia and Expo, ICME 2002. vol. 1, 1035858, Institute of Electrical and Electronics Engineers Inc., pp. 621-624, 2002 IEEE International Conference on Multimedia and Expo, ICME 2002, Lausanne, 02/8/26. https://doi.org/10.1109/ICME.2002.1035858
    Nakagami O, Miyazwa T, Watanabe H, Tominaga H. A study on two-layer coding for animation images. In Proceedings - 2002 IEEE International Conference on Multimedia and Expo, ICME 2002. Vol. 1. Institute of Electrical and Electronics Engineers Inc. 2002. p. 621-624. 1035858 https://doi.org/10.1109/ICME.2002.1035858
    Nakagami, Ouji ; Miyazwa, Toshinori ; Watanabe, Hiroshi ; Tominaga, Hideyoshi. / A study on two-layer coding for animation images. Proceedings - 2002 IEEE International Conference on Multimedia and Expo, ICME 2002. Vol. 1 Institute of Electrical and Electronics Engineers Inc., 2002. pp. 621-624
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