A study on two-layer coding for animation images

Ouji Nakagami*, Toshinori Miyazwa, Hiroshi Watanabe, Hideyoshi Tominaga

*この研究の対応する著者

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルProceedings - 2002 IEEE International Conference on Multimedia and Expo, ICME 2002
出版社Institute of Electrical and Electronics Engineers Inc.
ページ621-624
ページ数4
ISBN(電子版)0780373049
DOI
出版ステータスPublished - 2002
イベント2002 IEEE International Conference on Multimedia and Expo, ICME 2002 - Lausanne, Switzerland
継続期間: 2002 8 262002 8 29

出版物シリーズ

名前Proceedings - 2002 IEEE International Conference on Multimedia and Expo, ICME 2002
1

Conference

Conference2002 IEEE International Conference on Multimedia and Expo, ICME 2002
国/地域Switzerland
CityLausanne
Period02/8/2602/8/29

ASJC Scopus subject areas

  • 考古学
  • 電子工学および電気工学

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