values and variances of the local maxima. Another computation 
    
technique is.the run length statistic  /1/, where the grey 
level space is segmented to assess the frequency h(i,j) of 
(1) run lengths (i.e. the number j of consecutive pixels along 
the lines) within the segments i. Some of the textural patterns 
are given in eqn. (2). 
PC =c, 2 A3) RE- C2 2^ A7) 
nt 7 (2) 
2 
) 
) 
RD G2. (Z Ásj 
dana 
2 
6D = e ZA) 
  
lata 
: or 
rey 
Lffers 
ı along 
textural 
Fig. 3: Grey level distribution along lines through a housing 
M mas area or a forest region and run length statistics 
1 mean