Combining the discrete wavelet transforms and rank-order based filters for image restoration

被引：4
|
作者：
Atourian, SM [1 ]
Egiazarian, KO [1 ]
Gevorkian, DZ [1 ]
Astola, JT [1 ]
机构：
[1] Tampere Univ Technol, Signal Proc Lab, FIN-33101 Tampere, Finland
来源：
OPTICAL ENGINEERING | 1998年 / 37卷 / 01期
关键词：
recognition techniques; image restoration; wavelet denoising; impulse removal filters;
D O I：
10.1117/1.601606
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a filter structure formed as the superposition of an impulse removal filter, based on a modified K-nearest-neighbor operation and discrete wavelet transform based noise reduction. This filter removes impulsive and Gaussian noise and mixed noises well. We also suggest an efficient architecture for implementing the impulse removal filter used in this structure. (C) 1998 Society of Photo-Optical Instrumentation Engineers. [S0091-3286(98)02301-0].
引用
收藏
页码：189 / 201
页数：13
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