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/********************************
Author: Sravanthi Kota Venkata
********************************/
#include "sdvbs_common.h"
I2D* iiConv2(I2D* a, I2D* b)
{
I2D *c;
I2D *out;
int ma, na, mb, nb, ci, cj, i, j, m, n;
int r_index, c_index;
ma = a->height;
na = a->width;
mb = b->height;
nb = b->width;
r_index = ceil((mb + 1.0)/2.0);
c_index = ceil((nb + 1.0)/2.0);
ci = ma+mb-1;
cj = na+nb-1;
c = iSetArray(ci, cj, 0);
for(i=0; i<ci; i++)
{
for(j=0; j<cj; j++)
{
for(m=0; m<ma; m++)
{
for(n=0; n<na; n++)
{
if( (i-m)>=0 && (j-n)>=0 && (i-m)<mb && (j-n)<nb )
subsref(c,i,j) += subsref(a,m,n) * subsref(b,i-m,j-n);
}
}
}
}
out = iMallocHandle(ma, na);
for(i=0; i<ma; i++)
{
for(j=0; j<na; j++)
{
subsref(out,i,j) = subsref(c,(i+r_index-1),(j+c_index-1));
}
}
return out;
}
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