fbeta.m

基于小波变换的特征检索算法

function f = fbeta(x)
% FBETA fbeta(x) = gamma(2/x) / (gamma(3/x) * gamma(1/x))
% This function is used to compute beta

f = exp(2 * gammaln(2 ./ x) - gammaln(3 ./ x) - gammaln(1 ./ x));