What is the equation for Mexican hat wavelet defined by 'mexihat' function
20 ビュー (過去 30 日間)
古いコメントを表示
Palguna Gopireddy
2022 年 3 月 30 日
コメント済み: Palguna Gopireddy
2022 年 6 月 13 日
I am wondering what would be the equation for the Mexican hat wavelet defined by 'mexihat' function as its equation is not given in the discription. Not just this function, for some other functions also equations are not given.
I have done the following way, both are not equal and also I am unable to put [lb,ub] variables in the equation.
L=45;
alpha=2.5;
n=-(L-1)/2:(L-1)/2;
sigma=((L-1)/(2*alpha));
m=(1-(n/sigma).^2).*exp(-((n/sigma).^2)/2);
m=m.';
[m_r,x] = mexihat(-1,1,45);
m_r=m_r.';
0 件のコメント
採用された回答
Maria Lucia Cardinali
2022 年 6 月 9 日
編集済み: Maria Lucia Cardinali
2022 年 6 月 9 日
If you open mexihat, you can see that the value is calculated as:
out2 = linspace(LB,UB,N); % wavelet support.
out1 = out2.^2;
out1 = (2/(sqrt(3)*pi^0.25)) * exp(-out1/2) .* (1-out1);
The formula is: , for .
その他の回答 (0 件)
参考
カテゴリ
Help Center および File Exchange で Denoising and Compression についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!