perform_pyramid_transform_ti.m

来自「我找到的matlab的最新工具箱」· M 代码 · 共 21 行

function MW = perform_pyramid_transform_ti( M, Jmin,options )

% perform_pyramid_transform_ti - gaussian pyramidal transform (1D or 2D).
%
% MW = perform_pyramid_transform_ti( M, M_src,Jmin,options )
%
%   'options' is a struct that can contains
%       - 'sigma': basis variance.
%       - 'bound': boundary extension (eiter 'sym' or 'per').
%
%   Decompose M as
%       M = MW{p} + sum_{k=1...p-1} MW{k}
%   with
%       MW{k} = M * ( G(sigma*2^j)-G(sigma*2^(j-1)) )
%   where G(s) is a gaussian filter with variance s.
%
%   Warning : this decomposition is redundant (it is
%   translation-invariant), and does not conserve energy at all ...
%   Good for computer vision applications ! 
%
%   Copyright (c) 2004 Gabriel Peyr