diff options
| author | Joe Zhao <ztuowen@gmail.com> | 2015-05-12 13:15:55 +0800 |
|---|---|---|
| committer | Joe Zhao <ztuowen@gmail.com> | 2015-05-12 13:15:55 +0800 |
| commit | 34de475999a22ac7280411e15339e77a0c8dbc2e (patch) | |
| tree | 76ecfbe3a8f20d6da8b136dfe78a9e8071075692 /gaborFilter.m | |
| download | featext-34de475999a22ac7280411e15339e77a0c8dbc2e.tar.gz featext-34de475999a22ac7280411e15339e77a0c8dbc2e.tar.bz2 featext-34de475999a22ac7280411e15339e77a0c8dbc2e.zip | |
initial commit
Diffstat (limited to 'gaborFilter.m')
| -rw-r--r-- | gaborFilter.m | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gaborFilter.m b/gaborFilter.m new file mode 100644 index 0000000..8cf9260 --- /dev/null +++ b/gaborFilter.m @@ -0,0 +1,13 @@ +function fout = gaborFilter(gamma,theta,lambda,sigma) + sigma_x = sigma; + sigma_y = sigma/gamma; + + sz=fix(4*max(sigma_y,sigma_x)); + + [x y]=meshgrid(-sz:sz,sz:-1:-sz); + + % Rotation + x_theta=x*cos(theta)+y*sin(theta); + y_theta=-x*sin(theta)+y*cos(theta); + + fout=filterNorm(exp(-0.5*(x_theta.^2/sigma_x^2+y_theta.^2/sigma_y^2)).*exp(2*i*pi/lambda*x_theta));
\ No newline at end of file |