The below inequalities show the "contours" of the g(x,y) function. One could use g(x,y) (clamped by 0 and 1) as the intensity of each pixel to get a rudimentary blur effect.
4
表达式5: "g" left parenthesis, "x" , "y" , right parenthesis greater than 1gx,y>1
5
表达式6: "g" left parenthesis, "x" , "y" , right parenthesis greater than 0.5gx,y>0.5
6
表达式7: "g" left parenthesis, "x" , "y" , right parenthesis greater than 0gx,y>0
