1 files changed, 7 insertions, 0 deletions

diff --git a/SD-VBS/common/toolbox/toolbox_basic/pyramid/reduce.m b/SD-VBS/common/toolbox/toolbox_basic/pyramid/reduce.m
new file mode 100755
index 0000000..6837e8a
--- /dev/null
+++ b/SD-VBS/common/toolbox/toolbox_basic/pyramid/reduce.m
@@ -0,0 +1,7 @@
+function J = reduce(I)
+
+[nr,nc,nb] = size(I);
+for j=1:nb,
+    tmp = gauss_lowpass(I(:,:,j));
+    J(:,:,j) = tmp(1:2:nr,1:2:nc);
+end
\ No newline at end of file