Canon CXDI-1 Operation Manual page 86

7. Processing the Image (QA Mode Screen)
Suppose the analyzed value is 0.30. If the setting is +1, the DEP will be 0.25. If the
setting is -1, it will be 0.35.
If the analyzed value is 1.00, it is the same as if the DEP had not been performed.
The effect is limited to the 0 to 1 range.
Efficacy of high density
When the efficacy of high density is
increased, the range of pixels will
narrow after the image is processed at a
higher level than the compression
starting level.
3
Set the starting level for high density.
Touch or to select a setting from +10 to -10.
The value on the left is the value analyzed automatically (DEP analysis value). The value
on the right is the efficacy that will be added to the analyzed value on the left side (table
below).
The larger the number, the narrower the effective area.
Table 7.6.1B: Setting Values – Starting Level Changes (high density)
Setting -10
Starting
Level -
1000
Change
Setting +1
Starting
Level 100
Change
Suppose the starting level is 2400. If the setting is +1, the starting level will be 2500. If
the setting is -1, the level will be 2300.
Starting level for high density
When the starting level is high as shown at
the right, the effective range (shaded part)
will narrow.
-9 -8 -7 -6
-900 -800 -700 -600
+2 +3 +4 +5
200 300 400 500
– 78 –
Pixel value
after the process
Compression
starting level
-5 -4 -3
-500 -400 -300 -200
+6 +7 +8
600 700 800 900
Distribution
frequency
Starting level low
Distribution
frequency
Starting level high
0.35 (Setting -1)
0.3 (Setting 0)
0.25 (Setting +1)
Pixel value
before the process
-2 -1 0
-100 0
+9 +10
1000
Efficacy
range
Pixel
value
Efficacy
range
Pixel
value