數位影像變形及內插處理器之研究 Research on Digital Image Warping and Interpolation
Date Issued
2005-04-30
Date
2005-04-30
Author(s)
DOI
932622E002013CC3
Abstract
In this paper, we propose a new method to realize an
irrational scaling of a 2D digital signal/image. This method is
suitable for any scaling matrices with real entries, including
irrational numbers. Based on this algorithm, a new structure of
a 2D four-channel non-uniform perfect reconstruction filter
bank is derived. Through the proposed structure, it is now
possible to segment the 2D frequency components of a 2D
digital signal/image arbitrarily through a careful design of the
scaling matrix while still preserving the PR property. Therefore,
we can find many applications such as image compression and
communication using this structure. The experimental results
are presented at the end of this paper.
irrational scaling of a 2D digital signal/image. This method is
suitable for any scaling matrices with real entries, including
irrational numbers. Based on this algorithm, a new structure of
a 2D four-channel non-uniform perfect reconstruction filter
bank is derived. Through the proposed structure, it is now
possible to segment the 2D frequency components of a 2D
digital signal/image arbitrarily through a careful design of the
scaling matrix while still preserving the PR property. Therefore,
we can find many applications such as image compression and
communication using this structure. The experimental results
are presented at the end of this paper.
Subjects
irrational scaling
interpolation
decimation
2D nonuniform filter bank
perfect reconstruction
Publisher
臺北市:國立臺灣大學電機工程學系暨研究所
Type
report
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