initial sd-vbs

initial sd-vbs

add sd-vbs

sd-vbs

1 files changed, 15 insertions, 0 deletions

diff --git a/SD-VBS/benchmarks/texture_synthesis/src/matlabPyrTools/shift.m b/SD-VBS/benchmarks/texture_synthesis/src/matlabPyrTools/shift.m
new file mode 100755
index 0000000..497297e
--- /dev/null
+++ b/SD-VBS/benchmarks/texture_synthesis/src/matlabPyrTools/shift.m
@@ -0,0 +1,15 @@
+% [RES] = shift(MTX, OFFSET)
+% 
+% Circular shift 2D matrix samples by OFFSET (a [Y,X] 2-vector),
+% such that  RES(POS) = MTX(POS-OFFSET).
+
+function res = shift(mtx, offset)
+
+dims = size(mtx);
+
+offset = mod(-offset,dims);
+
+res = [ mtx(offset(1)+1:dims(1), offset(2)+1:dims(2)),  ...
+          mtx(offset(1)+1:dims(1), 1:offset(2));        ...
+        mtx(1:offset(1), offset(2)+1:dims(2)),          ...
+          mtx(1:offset(1), 1:offset(2)) ];