JAI SP-12401C-USB, User Manual

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SP-12401M-USB/SP-12401C-USB
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BlemishCompensation
Multiple defective pixels that are not adjacent to each other can occur on conventional CMOS
sensor cameras.
This camera features a function that interpolates defective pixels using the surrounding pixels.
Up to 800 pixels can be corrected for each of the three sensors. Pixel interpolation can be
performed via automatic detection or point-by-point manual settings.
■ Automatic detection
Automatic detection can only detect lit defective pixels (i.e., white blemishes).
1
Shield the camera sensor.
If a lens is attached, use the lens cap as a shield, for example.
2
Configure the threshold level for defective pixel detection.
Up to 800 pixels can be corrected.
The threshold value is specified as a percentage.
The default setting is "10" with 10% of the full scale (100%) specified as the threshold
value.
3
Execute [BlemishDetect] to start automatic detection.
After detection, the interpolation data is saved to the camera's internal memory.
To check the number of interpolated pixels after automatic detection
You can check the number of pixels interpolated via automatic detection by loading the
BlemishNum data.
■ Manual configuration
1
Select the index in [BlemishCompensationIndex].
You can select from 1 to 800. However, configure the indexes in order starting
with the smallest index. If you skip indexes while configuring settings,
interpolation may not be performed.
2
Specify the pixel points for interpolation using the
[BlemishCompensationPositionX] and [BlemishCompensationPositionY] settings.
You can configure values that are within the total effective pixel area. Specify pixels for
which interpolation is not necessary as -1. If 0 is specified, the first line or first pixel
will be interpolated.
3
Execute [BlemishStore].
Blemish compensation data will be stored.
Note
BlemishCompensationDataClear[BlemishCompensationIndex], you can return a specific pixel
correction setting to the default value (storage not required).
4
Set [BlemishEnable] to [True], and execute interpolation.
If it is set to [False] , Blemish compensation is not effective.