Table of Contents
Advertisement
4
Set the low density effect.
Touch
or
to select a setting from +10 to -10.
Although large values will improve the visibility of low density regions of the image, the
use of too large a value may result in an increase of the graininess of the image.
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 stronger the processing.
Table 7.6.1C: Setting Values – Corresponding Efficacy (low density)
Setting
-10
Efficacy
0.50
Setting
+1
Efficacy
-0.05 -0.10 -0.15 -0.20 -0.25 -0.30 -0.35 -0.40 -0.45 -0.50
Suppose the analyzed value is 0.50. If the setting is +1, the DEP will be 0.45. If the
setting is -1, it will be 0.55.
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 low density
When the efficacy of low density is
increased, the range of pixels will narrow
after the image is processed at a lower level
than the compression starting level.
5
Set the starting level of low 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).
A larger starting level results in a wider effect range, and a smaller starting level results
in a narrower range.
Table 7.6.1D: Setting Values – Starting Level Changes (low density)
Setting
-10
Starting
Level
-1000
Change
Setting
+1
Starting
Level
100
Change
Suppose the starting level is 1500. If the setting is +1, the starting level will be 1600. If
the setting is -1, the level will be 1400.
7. Processing the Image (QA Mode Screen)
-9
-8
-7
-6
0.45
0.40
0.35
0.30
+2
+3
+4
+5
-9
-8
-7
-6
-900
-800
-700
-600
+2
+3
+4
+5
200
300
400
500
– 79 –
-5
-4
-3
-2
0.25
0.20
0.15
0.10
+6
+7
+8
+9
Pixel value
after the process
0.45 (Setting +1)
0.50 (Setting 0)
0.55 (Setting -1)
Compression starting level
-5
-4
-3
-2
-500
-400
-300
-200
+6
+7
+8
+9
600
700
800
900
Continued on the following page >>
-1
0
0.05
0.00
+10
Pixel value
before the process
-1
0
-100
0
+10
1000
Advertisement
Table of Contents
