a) introducing and setting a variable, with name such as ES, to zero, b) processing loops over the values of y from y=0 to y=(H???1) incrementing by one at each roll of the loop, where H is the height of the two-dimensional data, c) for each y, loops over the values of x from x=0 to x=(w???1) incrementing by one at each roll of the loop, where W is the width of the two-dimensional data, d) for eac