7 locales 
  
  
   
   
  
  
  
  
  
  
(bound 13) 
b=25 10 locales 
(bound 11) 
As À 
À x 
b=50 13 locales 
(bound 13) 
I—— unit grid interval — 
Figure 1: Example Pattern of Locales 
A unit raster square is partjtioned into this pattern of locales for the 
entity H(x,y) = 4.1 e (x t Ye Quantization is performed by integer 
truncation. Points in adjacent locales have an image distance of 1 between 
them. The bound and actual number of locales crossed for 3 horizontal 
lines are illustrated. The raster square boundary does not define an edge 
for the locales; the pattern of curved lines is periodically repeated to 
cover the plane.