Operation and Features
BASLER L304
kc 3-37
Draft
The table below shows the function of each stamp pixel by position. A more detailed explanation
of how to interpret the pixel values follows the table.
Stamp Pixels S1 and S2
Stamp pixels S1 and S2 are fixed values of 0xAA and 0x55 respectively. These two values are
the bitwise complement of each other and can be used as a data integrity check. They can also
be used to find the start of the stamp pixels.
Stamp Pixels S3 and S4
Stamp pixels S3 and S4 represent the least significant and most significant bytes (respectively) of
the line counter. The line counter increments by one for each line captured by the camera. The
counter starts at 0 and wraps at 65535. The line counter is reset to 0 whenever the camera is
switched off or reset or when the stamp feature is disabled.
Stamp Pixels S5, S6 and S7
Stamp pixels S5, S6 and S7 represent the least significant, middle and most significant bytes
(respectively) of the line sum. The line sum is simply the total of all of the pixel values in the
captured line. The line sum can range from 0 to 4173840.
The line sum does not include the 16 added “stamp pixels.” If the AOI feature is being used, the
line sum is based only on the pixels within the AOI.
Stamp Pixel S8
Stamp pixel S8 is reserved for future use. Currently, its value will always be 0.
Stamp Pixels S9 and S10
Stamp pixels S9 and S10 represent the least significant and most significant bytes (respectively)
of the total high pixels. The total high pixels indicates the number of pixels in a captured line that
are above a parameter called the “High Pixel Threshold.” The total high pixels can range from 0
to 4080.
Position Function Position Function
S1 Fixed value of 0xAA S9 Total High Pixels (LSByte)
S2 Fixed value of 0x55 S10 Total High Pixels (MSByte)
S3 Line Counter (LSByte) S11 Total Low Pixels (LSByte)
S4 Line Counter (MSByte) S12 Total Low Pixels (MSByte)
S5 Line Sum (LSByte) S13 Contrast Value (LSByte)
S6 Line Sum (MidByte) S14 Contrast Value (MidByte)
S7 Line Sum (MSByte) S15 Contrast Value (MSByte)
S8 Reserved S16 Reserved
Table 3-4:Stamp Pixel Functions
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