An Evolved Wavelet Library Based on Genetic Algorithm

Table 3

Initial configuration of four different GAs.

Parameter variables	Convolution filter		Lifting scheme
	9	2	5	1
Wavelet DWT implementation	Matlab wavelet toolbox	Matlab wavelet toolbox	Matlab wavelet toolbox	Matlab wavelet toolbox
Fitness function	PSNR	PSNR	PSNR	PSNR
Generations	500	500	500	500
Permitted filter coefficient values
Population initialization	CDF9/7	CDF9/7	CDF9/7	CDF9/7
Population size	200	200	200	200
Selection operator	Random/stochastic uniform	Random/stochastic uniform	Random/stochastic uniform	Random/stochastic uniform
Elite	10	10	10	10
Crossover rate	0.5/0.8	0.5/0.8	0.5/0.8	0.5/0.8
Recombination	Wright’s heuristic	Wright’s heuristic	Wright’s heuristic	Wright’s heuristic
Mutation operator	Gaussian	Gaussian	Gaussian	Gaussian
Mutation standard deviation	0.3	0.3	0.3	0.3
Mutation shrink rate	1.0	1.0	1.0	1.0