Generalized unequal length lapped orthogonal transform for subband image coding

Takayuki Nagai, Masaaki Ikehara, Masahide Kaneko

研究成果: Article査読

11 被引用数 (Scopus)

抄録

In this paper, generalized linear phase lapped orthogonal transforms with unequal length basis functions (GULLOTs) are considered. The length of each basis of the proposed GULLOT can be different from each other, whereas all the bases of the conventional GenLOT are of equal length. In general, for image coding application, the long basis for a low-frequency band and the short basis for a high-frequency one are desirable to reduce the blocking and the ringing artifact simultaneously. Therefore, the GULLOT is suitable especially for a subband image coding. In order to apply the GULLOT to a subband image coding, we also investigate the size-limited structure to process the finite length signal, which is important in practice. Finally, some design and image coding examples are shown to confirm the validity of the proposed GULLOT.

本文言語English
ページ(範囲)3365-3378
ページ数14
ジャーナルIEEE Transactions on Signal Processing
48
12
DOI
出版ステータスPublished - 2000 12月
外部発表はい

ASJC Scopus subject areas

  • 信号処理
  • 電子工学および電気工学

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