1 files changed, 55 insertions, 0 deletions

diff --git a/SD-VBS/benchmarks/sift/src/c/doubleSize.c b/SD-VBS/benchmarks/sift/src/c/doubleSize.c
new file mode 100644
index 0000000..dd17f77
--- /dev/null
+++ b/SD-VBS/benchmarks/sift/src/c/doubleSize.c
@@ -0,0 +1,55 @@
+/********************************
+Author: Sravanthi Kota Venkata
+********************************/
+
+#include "sift.h"
+
+F2D* doubleSize(F2D* I)
+{
+    F2D *J;
+    int M, N, i, j;
+
+    M = I->height;
+    N = I->width;
+    J = fSetArray(2*M, 2*N, 0);
+
+    for(i=0; i<M; i++)
+    {
+        for(j=0; j<N; j++)
+        {
+            subsref(J,2*i,j*2) = subsref(I,i,j);
+        }
+    }
+    
+    for(i=0; i<M-1; i++)
+    {
+        for(j=0; j<N-1; j++)
+        {
+            subsref(J,i*2+1,j*2+1) = (0.25 * (subsref(I,i,j) + subsref(I,i+1,j) + subsref(I,i,j+1) + subsref(I,(i+1),j+1)));
+        }
+    }
+
+    for(i=0; i<M-1; i++)
+    {
+        for(j=0; j<N; j++)
+        {
+            subsref(J,i*2+1,j*2) = (0.5 * (subsref(I,i,j) + subsref(I,i+1,j)));
+        }
+    }
+   
+    for(i=0; i<M; i++)
+    {
+        for(j=0; j<N-1; j++)
+        {
+            subsref(J,i*2,j*2+1) = (0.5 * (subsref(I,i,j) + subsref(I,i,j+1)));
+        }
+    }
+    
+    return J;
+}
+
+
+
+
+
+