meyer_sf_vkbook.m

A set of C++ and Matlab routines implementing the surfacelet transform surfacelet的一个非常好用的工具箱

function theta = Meyer_sf_vkbook(x)

%   The smooth passband function for constructing Meyer filters
%   This one is from the VK book
%    
%   Yue Lu and Minh N. Do
%   First Created: 08-26-05
%   Last Revision: 08-26-05
%

theta = 3 * x .^ 2 - 2 * x .^ 3;
theta(x <= 0) = 0;
theta(x >= 1) = 1;

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