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CD40047_R04_allPIXA_User-Manual.docx 137
11.3 White reference mark
Position and size in CCD direction
NOTE Attention:
The white reference area may not overstep the tap border.
For the position in CCD direction of the white reference control zone you may have two
possibilities:
“Relative” x position:
The x position of the white reference mark can be defined “relative” to the current image
window. If defined
relative , the reference position moves with changing the scan line length
of the current scan window.
“Absolute” x position
The x position of the white reference mark can be defined “absolute” within the maximum
scan window. If defined
absolute , the reference position does not move with changing the
width of the current scan window.
A1= First relative pixel of white reference (may be negative) (see section 11.3.3)
A2= First absolute pixel of white reference (see section 11.3.4)
B = Number of pixels for white reference (see section 11.3.6)
C = First image line of white reference (may be negative), only used if white control mode is set
to “sync mode” (see section 0
)
D = Number of image lines for white reference (see section 11.3.8)
(*A): Number of valid pixels depends on the type of camera:
allPIXA camera7300: number of valid pixel = 7300
allPIXA camera4096: number of valid pixel = 4096
allPIXA camera2048: number of valid pixel = 2048
The Use absolute horizontal white reference position check box selects whether relative or
absolute white reference mode is used.
Size of the white reference area is defined with “number of pixel for white reference”