Simultaneous noise reduction and feature enhancement in images using diamond-shaped 2-D filter banks

被引：0
|
作者：
Lu, WS
Antoniou, A
机构：
来源：
ISCAS '97 - PROCEEDINGS OF 1997 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS I - IV: CIRCUITS AND SYSTEMS IN THE INFORMATION AGE | 1997年
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中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
A two-dimensional (2-D) multiresolution method for simultaneous noise reduction and feature enhancement in images is described. 2-D multiresolution analysis is carried out using a tree structure based on a two-channel, diamond-shaped 2-D filter bank for improved performance and processing efficiency. In this framework, a digital signal processing unit is embedded between the analysis filters and synthesis filters. The noise that contaminates the image is reduced by a technique similar to the wavelet shrinkage method recently proposed by David Donoho, while desirable features of the image are enhanced using a weighted synthesis of the subimages obtained from the multiresolution analysis.
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页码：737 / 740
页数：4
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