Basler A640F, User Manual

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Basic Operation & Standard Features
BASLER A640
f
3-27
DRAFT
3.5.2 Color Filter ID
The Color Filter ID register for Format 7 (see page 4-40 ) has been implemented on
A641
fc
cameras. This Color Filter ID register can be used to determine the alignment of the camera’s
color filter to the current Area of Interest (AOI). To use this feature, make all desired changes to
the camera’s parameter settings and then read the value in the Filter ID field of the Color Filter ID
register. The field will indicate an ID of 0, 1, 2, or 3 as appropriate.
As shown in Table 3-2, each ID identifies the color of the first two pixels in the first row of the
current AOI and the color of the first two pixels in the second row of the AOI. Due to the repetitive
nature of the Bayer RGB primary color filter (see Section
3.5.2 ) used in the
A641
fc
, this information
is all you need to determine the order of the pixel colors with your current settings.
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The actual range of valid settings for the Blue Value is from 16 (0x10) to 255 (0xFF),
however, only the settings from 64 (0x40) to 255 (0xFF) are useful. If you set the
Blue Value lower than 64 (0x40), the camera will continue to operate, but you will
see unacceptable changes in the color balance.
The actual range of valid settings for the Red Value is from 16 (0x10) to 255 (0xFF),
however, only the settings from 64 (0x40) to 255 (0xFF) are useful. If you set the
Red Value lower than 64 (0x40), the camera will continue to operate, but you will
see unacceptable changes in the color balance.
ID 0 ID 1 ID 2 ID 3
First pixel in the first row R G G B
Second pixel in the first row G B R G
First pixel in the second row G R B G
Second pixel in the second row B G G R
Table 3-2: Color Filter IDs
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The Color Filter ID register for Format 7 is defined in version 1.31 of the IIDC speci-
fication.
The Basler BCAM 1394 Driver does not yet include a method call to access the Color
Filter ID feature. As a work-around, you can use the techniques described in the tu-
torial for the Basler Smart Features Framework Software to directly read from or write
to the Filter ID field. The Smart Features Framework Software is available on the
Basler web site. To download the software go to:
http://www.baslerweb.com/popups/popup_en_1825.php