文章基本信息

标题：ウェーブレット画像符号化による品質・空間スケーラビリティ
本地全文：下载
作者：阿部淑人 ; 菊池久和 ; 佐々木重信等
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：1997
卷号：51
期号：11
页码：1889-1898
DOI：10.3169/itej.51.1889
出版社：The Institute of Image Information and Television Engineers
摘要：A scalable image coding method is presented. Spatial scalability is implemented by using a multiresolution representation produced by a wavelet expansion. Quality scalability is implemented by using a multiprecision representation produced by multistage zero run-length coding after nonlinear quantization. The data rate is controlled by threshold values and/or spatial resolution in the wavelet expansion. The coding method owes its fine scalability and higher compression to multiresolution decomposition, nonlinear quantization, multistage zero run-length coding and arithmetic coding. In addition to the simplicity in coding, edges and outlines are well preserved without blocking noise at low bit rates. A few examples are also given.
关键词：ウェーブレット;多重解像度表現;閾値付き多段零ラン長符号化;多重精度表現;スケーラビリティ