function supersampled_image = mSupersampleAverage( image )

[ row_max, col_max ] = size( image );

row_max = row_max * 2;
col_max = col_max * 2;

supersampled_image = zeros( row_max, col_max );

supersampled_image( 1:2:row_max, 1:2:col_max ) = image;
supersampled_image( 2:2:row_max, 1:2:col_max ) = image;
supersampled_image( 1:2:row_max, 2:2:col_max ) = image;
supersampled_image( 2:2:row_max, 2:2:col_max ) = image;