Chromasens CD40127_R02 allPIXA_pro_User Manual.docx
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8.4.4 Single color channel reference generation for special illumination
situations (Separate lighting for each color channel)
For special tasks a special illumination setup may be necessary. If an inspection task is done
where in each color channel different information are evaluated by use of a special illumination
per channel, the balancing procedure must be done individually per channel.
Creation of a shading reference in only necessary during commissioning or if the gain values
are changed considerably.
Make sure that all changes made to your current setting are saved
permanently to the camera before you use the Reference wizard.
Otherwise, all
changes get lost!
1
Get the camera to the desired working point
Setup the working point and the tap balancing of the camera before grabbing the
reference images according to section 8.2.4. Do not use the tap balancing
function
Optional:
Activate black-level correction (Do not use with the separate color
channels)
Optional:
Perform a white balancing (Do not use with the separate color
channels)
Note:
The white reference target has to be placed into the best focus plane of the camera.
Therefore any features on its surface (for example dust, scratches) end up in the calibration
profile of the camera. To avoid this if you use a static (non-moving) white reference target,
use a clean white ceramic or plastic material, not paper. Ideally, the white object should
move during the calibration process because the movement results in an averaging process
and the camera diminishes the effects on any small variation in the white reference.
2
Start the reference wizard
On the toolbar, click
Start reference wizard
.
3
Select the “Set settings to acquire a white(gain) reference” function
Click
White (flat-field) level reference
.
Click
Prepare camera to acquire a raw image
:
Click
Next
.
