1 files changed, 7 insertions, 0 deletions

diff --git a/SD-VBS/common/toolbox/ikkjin/getImgGrad.m b/SD-VBS/common/toolbox/ikkjin/getImgGrad.m
new file mode 100755
index 0000000..90fae28
--- /dev/null
+++ b/SD-VBS/common/toolbox/ikkjin/getImgGrad.m
@@ -0,0 +1,7 @@
+function Ig=getImgGrad(imgroi)
+im = double(rgb2gray(imgroi));
+g1 = fspecial('gaussian', 9,1);  % Gaussian with sigma_d
+img1 = conv2(im,g1,'same');  % blur image with sigma_d
+Ix = conv2(img1,[-1 0 1],'same');  % take x derivative
+Iy = conv2(img1,[-1;0;1],'same');  % take y derivative
+Ig=Ix.^2+Iy.^2;
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