DocumentCode :
3456776
Title :
Feature Detection Based on Filter Banks and Higher Order Cumulants
Author :
Hong Fan ; Qingfeng Meng ; Youyun Zhang ; Wuwei Feng
Author_Institution :
Sch. of Comput. Sci., Shannxi Normal Univ., Xi´an
fYear :
2006
fDate :
20-23 Aug. 2006
Firstpage :
562
Lastpage :
566
Abstract :
Based on that higher-order cumulants is insensitive to add-Gaussian noise and symmetric noise, a method for detecting feature of signal embedded in additive noise is presented, which combines a filter banks and higher-order cumulants, neither the supposition of the observed signal is Gaussian or stationary, nor a prior information about the waveform and arrive time of the observed signal is necessary. The primary principle of the proposed method is to separate the spectrum of the observed signal into narrow frequency band by using a bandpass filter banks, those subfilters which have large output energies are chosen to give a time-frequency description of the observed signal approximately, each chosen subfilter is then followed by a short-time estimation of third-order cumulant so that to suppress colored noise and detect the signal feature. Simulated and experimental results show that the method is effective and practical, even if the signal feature is submerged into noise signal completely.
Keywords :
Gaussian noise; band-pass filters; estimation theory; signal denoising; signal detection; Gaussian noise; additive noise; bandpass filter banks; colored noise suppression; higher order cumulants; narrow frequency band; short-time estimation; signal feature detection; symmetric noise; third-order cumulant; Adaptive signal detection; Additive noise; Colored noise; Computer vision; Filter bank; Fourier transforms; Gaussian noise; Gaussian processes; Signal detection; Signal processing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Acquisition, 2006 IEEE International Conference on
Conference_Location :
Shandong
Print_ISBN :
1-4244-0528-9
Electronic_ISBN :
1-4244-0529-7
Type :
conf
DOI :
10.1109/ICIA.2006.305774
Filename :
4097718
Link To Document :
بازگشت