Shading Correction - Sony XCU-CG160 Technical Manual

Digital video camera module
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5
Select the data for applying defect correction. To
apply the pixels detected in steps 3 and 4, select
DefectPatternDetected. To apply factory settings,
select DefectPatternFactory. To apply values that
have been saved, select DefectPatternUser.
> DefectPatternLoad = DefectPatternDetected
Feature
Parameter
DefectPatternLoad DefectPattern
Factory (0)
DefectPattern
User (1)
DefectPattern
Detected (2)
6
Turn on defect correction.
> DefectCorrection = True
7
Save the settings. To repeat defect detection without
saving, repeat steps 1 to 6.
> DefectPatternSave = True
Read the status to determine whether the save
operation is finished.
> DefectPatternSave (readout)
True (executing)
False (exit)
The value False is returned when finished.
Note
The upper limit of defect detection points is 2047 for
white and black defect points combined. Correction
cannot be performed over the upper limit. The detected
defect points can be confirmed using
DefectDetectionResult. If the upper limit is exceeded,
defect detection will fail or abnormal defect detection
will occur, and the value of DefectDetectionResult will
be set to –1. Defect detection should be performed with
the camera mode set to NORMAL. For details, see
"Camera Mode" (page 12).
Setting
Factory setting
User setting
Data detected using
DefectDetectionMode
31

Shading Correction

Depending on the characteristics of the lens, shading
caused by a drop in the amount of light around the lens,
or light source variation, can be corrected. You can save
up to 31 user-defined patterns.
There are two shading correction modes. In peak
detection mode, you can adjust for the brightest level of
the screen. In average detection mode, you can adjust for
the average value of brightness for the whole screen.
Feature
Parameter
ShadingDetection
ShadingDetectionOff
Mode
(0)
ShadingDetectionBy
PeakValue (1)
ShadingDetectionBy
AverageValue (2)
Set the camera mode to NORMAL. For details, see
"Camera Mode" (page 12).
Feature
Parameter
Shading
False (0)
Correction
True (1)
Feature
Parameter
ShadingPattern
0 to 30
Select
Feature
Parameter
ShadingPattern
ShadingPatternSaveOff
Save
(0)
ShadingPatternSaveOn
(1)
Feature
Parameter
ShadingPattern
Load
Feature
Parameter
ShadingDetect
Red
Color
Green
Blue
Luminance
Setting
Check that the
detection is
completed
Start detection
(peak detection)
Start detection
(average detection)
Setting
Correction off
Correction on
Setting
Shading pattern
selection
Setting
Check that shading
pattern saving is
finished
Start shading
pattern saving
Setting
Load shading
pattern
Setting
Red
Green
Blue
Luminance

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