FsCCWTFB0551.m

function [af, sf] = FsCCWTFB0551

% This function is used in CCWT.
% The algorithm of CCWT is described in the following paper:
% Yang Chen, Dan Li, and Jian Qiu Zhang, "Complementary Color Wavelet: A Novel Tool for Color Image/Video Analyses and Processing", 2017.

% CCWT filterbanks for the First stage, length 22 with Thiran allpass filter L1=5, L2=5 and vanishing moment VM=1 
% USAGE:
%    [af, sf] = FsCCWTFB0551
% OUTPUT:
%    af{i}, i = 1,2 - analysis filters for tree i
%    sf{i}, i = 1,2 - synthesis filters for tree i


af{1} = sqrt(2)*[
    1.55196025214914e-07
    -3.64244986151481e-09
    -4.72296431657605e-05
    4.51978768236905e-07
    0.00367508218681040
    0.000134785259906740
    -0.0554563814967393
    -0.0199281412110457
    0.354811673474709
    0.567845846237940
    0.207254862089805
    -0.0681221946106980
    -0.0103436660847803
    0.0216450723247797
    0.000104646867572705
    -0.00160839578452004
    6.30232589463908e-07
    3.23832905322482e-05
    -7.33216485253484e-10
    -3.17578983997701e-08
    1.04185641833908e-13
    4.39947785905780e-12
];
af{1}=[af{1} af{1}(end:-1:1)];
af{1}(2:2:end,2)=af{1}(2:2:end,2)*-1;
sf{1} = af{1}(end:-1:1, :);


af{2} =  sqrt(2)*[
    2.07975316973642e-11
    3.28299284108471e-08
    7.37902871004124e-07
    -1.79120279796055e-05
    -0.000119733002797833
    0.00175340053377619
    0.00523039398995174
    -0.0322379791494069
    -0.0650808649375147
    0.205135892050975
    0.564880938720559
    0.361349856021001
    -0.0256046003924052
    -0.0415160457380604
    0.0230445084865565
    0.00577295512905657
    -0.00241051069658350
    -0.000243273289409661
    5.90366018513381e-05
    2.84619728506791e-06
    -1.34603572366523e-07
    -4.67451949247478e-10
];
af{2}=[af{2} af{2}(end:-1:1)];
af{2}(2:2:end,2)=af{2}(2:2:end,2)*-1;
sf{2} = af{2}(end:-1:1, :);


af{3} =  sqrt(2)*[
    -9.11001341220481e-09
    1.26569593791355e-10
    5.39451424543818e-09
    3.88278416451764e-07
    -3.66563902314513e-06
    -9.96351883061440e-05
    0.000560527640529715
    0.00536332360237928
    -0.0119902186579145
    -0.0720880690497491
    0.0729237485649041
    0.485957241064240
    0.493303761245982
    0.0695670541341079
    -0.0677827108006299
    0.0134011287709973
    0.0137872093638171
    -0.00217674002769087
    -0.000810170920791877
    7.52908343490528e-05
    1.12950083393471e-05
    -2.10455598848953e-07
];
af{3}=[af{3} af{3}(end:-1:1)];
af{3}(2:2:end,2)=af{3}(2:2:end,2)*-1;
sf{3} = af{3}(end:-1:1, :);