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/********************************
Author: Sravanthi Kota Venkata
********************************/
#include "sdvbs_common.h"
F2D* imageBlur(I2D* imageIn)
{
int rows, cols;
F2D *imageOut, *tempOut;
float temp;
I2D *kernel;
int k, kernelSize, startCol, endCol, halfKernel, startRow, endRow, i, j, kernelSum;
rows = imageIn->height;
cols = imageIn->width;
imageOut = fSetArray(rows, cols, 0);
tempOut = fSetArray(rows, cols, 0);
kernel = iMallocHandle(1, 5);
asubsref(kernel,0) = 1;
asubsref(kernel,1) = 4;
asubsref(kernel,2) = 6;
asubsref(kernel,3) = 4;
asubsref(kernel,4) = 1;
kernelSize = 5;
kernelSum = 16;
startCol = 2;
endCol = cols - 2;
halfKernel = 2;
startRow = 2;
endRow = rows - 2;
for(i=startRow; i<endRow; i++){
for(j=startCol; j<endCol; j++)
{
temp = 0;
for(k=-halfKernel; k<=halfKernel; k++)
{
temp += subsref(imageIn,i,j+k) * asubsref(kernel,k+halfKernel);
}
subsref(tempOut,i,j) = temp/kernelSum;
}
}
for(i=startRow; i<endRow; i++)
{
for(j=startCol; j<endCol; j++)
{
temp = 0;
for(k=-halfKernel; k<=halfKernel; k++)
{
temp += subsref(tempOut,(i+k),j) * asubsref(kernel,k+halfKernel);
}
subsref(imageOut,i,j) = temp/kernelSum;
}
}
fFreeHandle(tempOut);
iFreeHandle(kernel);
return imageOut;
}
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