Title :
Two-dimensional cumulant-based adaptive enhancer
Author :
Ibrahim, Hosny M. ; Gharieb, Reda R.
Author_Institution :
Dept. of Electr. Eng., Assiut Univ., Egypt
fDate :
2/1/1999 12:00:00 AM
Abstract :
This communication describes a novel two-dimensional (2-D) adaptive filtering algorithm to enhance 2-D signals of small spatial extent embedded in white or colored Gaussian noise. The coefficients of the adaptive filter converge to a special 2-D slice of the fourth-order cumulant function of the input signal. The proposed algorithm is called the 2-D cumulant-based adaptive enhancer (2DCBAE). Results are compared with images processed using the 2-D adaptive correlation enhancer (2DACE) and the 2-D least mean square (2DLMS) algorithms
Keywords :
FIR filters; Gaussian noise; adaptive filters; higher order statistics; image enhancement; two-dimensional digital filters; white noise; 2-D adaptive filtering algorithm; 2-D signals; 2DCBAE; colored Gaussian noise; fourth-order cumulant function; images; input signal; spatial extent; two-dimensional cumulant-based adaptive enhancer; white noise; Adaptive filters; Additive noise; Background noise; Finite impulse response filter; Gaussian noise; Image converters; Signal processing algorithms; Signal to noise ratio; Statistics; Two dimensional displays;
Journal_Title :
Signal Processing, IEEE Transactions on
