.HISTOGRAM LENGTH: 16
[Enter the length of the histogram. For 8 bits scanner
the density range is 0-255, thus 16 is appropriate.
For other numbers of bits histogram length has to
be changed.]
NOTES
; Adjust optical densities to the normal distribution. CE OD,x21,x22,x23 pap001 16 ar pap001 _1 LOG((p1+x22)*1) ar _1 _2 ((p1+x23)*x21) FS _2 CP _2 pap002 EN D