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Explanation of Solution
Method definition for "blur":
//Define "blur" method
public static double[][] blur(double[][] picture)
{
/* Compute maximum row value */
int maximumRow = picture.length;
/* Compute maximum column value */
int maximumCol = picture[0].length;
/* Create two dimensional array for result */
double[][] result = new double[maximumRow][maximumCol];
/* Compute weighted average of the element and its neighbors */
for(int row = 0; row < maximumRow; row++)
{
for(int col = 0; col < maximumCol; col++)
{
/* Assign "total" to "0.0" */
double total = 0.0;
/* Assign count to "0" */
double countValue = 0;
/* Validate the indices for all values in "picture" array */
/* For top three values in "picture" array */
if(validateIndices(row-1,col-1,maximumRow,maximumCol))
{
total += picture[row-1][col-1];
countValue += 1;
}
if(validateIndices(row-1,col,maximumRow,maximumCol))
{
total += 2*picture[row-1][col];
countValue += 2;
}
if(validateIndices(row-1,col+1,maximumRow,maximumCol))
{
total += picture[row-1][col+1];
countValue += 1;
}
/* For middle three values in "picture" array */
if(validateIndices(row,col-1,maximumRow,maximumCol))
{
total += 2*picture[row][col-1];
countValue += 2;
}
if(validateIndices(row,col,maximumRow,maximumCol))
{
total += 4*picture[row][col];
countValue += 4;
}
if(validateIndices(row,col+1,maximumRow,maximumCol))
{
total += 2*picture[row][col+1];
countValue += 2;
}
/* For bottom three values in "picture" array */
if(validateIndices(row+1,col-1,maximumRow,maximumCol))
{
total += picture[row+1][col-1];
countValue += 1;
}
if(validateIndices(row+1,col,maximumRow,maximumCol))
{
total += 2*picture[row+1][col];
countValue += 2;
}
if(validateIndices(row+1,col+1,maximumRow,maximumCol))
{
total += picture[row+1][col+1];
countValue += 1;
}
/* Finally compute the weighted average for all elements in "picture" array */
result[row][col] = total/countValue;
}
}
/* Returns the given result */
return result;
}
Complete code:
The complete code for after implementing "blur" method is given below:
//Define "BlurMethodTest" class
public class BlurMethodTest
{
//Define "blur" method
public static double[][] blur(double[][] picture)
{
/* Compute maximum row value */
int maximumRow = picture.length;
/* Compute maximum column value */
int maximumCol = picture[0].length;
/* Create two dimensional array for result */
double[][] result = new double[maximumRow][maximumCol];
/* Compute weighted average of the element and its neighbors */
for(int row = 0; row < maximumRow; row++)
{
for(int col = 0; col < maximumCol; col++)
{
/* Assign "total" to "0.0" */
double total = 0...
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