Applications of independent component analysis to image feature extraction

被引：2
|
作者：
Fan, L [1 ]
Long, F [1 ]
Zhang, DX [1 ]
Guo, XJ [1 ]
Wu, XP [1 ]
机构：
[1] Anhui Univ, Minist Educ, Key Lab Intelligent Comp & Signal Proc, Anhua, Peoples R China
来源：
SECOND INTERNATION CONFERENCE ON IMAGE AND GRAPHICS, PTS 1 AND 2 | 2002年 / 4875卷
关键词：
independent component analysis; feature extraction; sparse coding; soft-thresholding;
D O I：
10.1117/12.477183
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
Independent Component Analysis (ICA) is a new signal processing method developed recently which, analyzes the data from a-statistical point of view. In ICA, one can try to express a set of random variables as linear combinations of statistically independent components. In this paper, ICA is applied to image feature extraction, and the information maximization algorithm is performed to optimize the results. From the results, it can be seen that the extracted features represent the image data in a natural way. In addition, the ICA basis vectors are localized and oriented, and sensitive to lines and edges of varying thickness of images. As an application of these extracted features, another denoising experiment is done. In this experiment a Gaussian noise is reduced by applying a soft-thresholding operator on the extracted ICA coefficients.
引用
收藏
页码：471 / 476
页数：6
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