Basler A400K, User Manual

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Basic Operation and Features
3-38 Basler A400k
DRAFT
In 10 bit mode, a second stripe begins in column
1024. The pixels in column 1024 have a value of 0,
the pixels in column 1025 have a value of 1, the
pixels in column 1026 have a value of 2, and so on.
This pattern continues until column 2047 where the
pixels have a value of 1023.
A third stripe begins in column 2048. The pixels in
column 2048 have a value of 0, the pixels in column
2049 have a value of 1, the pixels in column 2050
have a value of 2, and so on. This pattern continues
until column 2352 where the pixels have a value of
304.
3.12.2 Test Image Two (Still Diagonal Stripe Pattern)
Test image two is useful for determining if your frame grabber has dropped any columns or lines
from your image.
The stripes in the still diagonal stripe test pattern
are formed with repeated gray scale gradients
ranging from 0 to 255 (in 8 bit output mode) or 0 to
1023 (in 10 bit output mode). As an exception, the
gray values of the first stripe range from 1 to 255 or
from 1 to 1023, respectively.
The top line starts with a gray value of 1 on pixel 1.
The second line starts with a gray value of 2 on
pixel 1. The third line starts with a gray value of 3 on
pixel 1, and so on. Line 255 (8 bit mode) or 1023 (10
bit mode) starts with a gray value of 255 or 1023 on
pixel 1. Line 256 (8 bit mode) or 1024 (10 bit mode)
restarts with a gray value of 0 on pixel 1, and so on.
Depending on the output mode selected on the
camera, either the 8 bit test image or the 10 bit test
image will be active.
The mathematical expression for the test image is
as follows:
8 bit: Gray level = [x + y - 1] MOD 256
10 bit: Gray level = [x + y - 1] MOD 1024
where x and y are natural numbers enumerating
lines and columns, respectively. According to the
number of pixels present, x ranges in steps of 1
from 1 to 1726 and y ranges in steps of 1 from 1 to
2352.
Figure 3-19: Test Image One (10 bit)
Figure 3-20: Test Image Two (8 Bit)
Figure 3-21: Test Image Two (10 Bit)