JAI Apex Series User Manual page 53

AP-1600T-USB | AP-3200T-USB | User Manual (Ver. 2.0)
The following shading correction modes are available on the camera.
Flat Shading
Correction is performed using the area of the screen
with the highest brightness level as the reference, and
adjusting the brightness levels of the other areas to
match this level.
Cautions:
For FlatShading and ColorShading, the maximum amount of correction gain for all pixels is limited to
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twice the amount of gain before correction. (The amount of gain cannot be increased to more than
twice the amount of gain from before correction.)
If the area in the screen with the highest brightness level is 175 LSB or less (during 10-bit video
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output), proper correction is not possible.
To Use the Shading Correction Function
1. Specify the shading correction mode (FlatShading or ColorShading) in ShadingCorrectionMode.
2. Select the user area to which to save the shading correction value (User1, User2, or User3).
3. Display a white chart under a uniform light, and execute PerformShadingCalibration.
4. After shading correction is executed, the shading correction value is automatically saved to the user area
selected in Shading Mode.
Note: PerformShadingCalibration will not be executed when:
The image is not output.
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Outputting a Test Pattern.
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In Sequencer Mode, MultiRoi mode, or SensorMultiRoi mode (AP-1600T-USB only), GainAuto =
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Continuous, ExposureAuto = Continuous, BalanceWhiteAuto = Continuous.
Width and/or Height are less than 128 pixels.
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C5olor Shading
R-channel and B-channel properties are adjusted by
using the G-channel shading properties as a
reference.
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Main Functions