Basler A102K, User Manual, Page: 75 / 133

Operation and Features
BASLER A102
k
3-39
DRAFT
3.12.3 Test Image Three
Test image three contains vertical gradients on
the left side of the image (columns 1 to 696) and
horizontal gradients on the right side (columns
697 to 1392). Test image three is useful for
determining if your frame grabber has dropped
any columns or lines from your image.
Vertical Gradients
The vertical gradient(s) on the left side of the
image are a total of 696 columns wide. A full
vertical gradient is 256 columns wide if the
camera is set for an 8 bit output mode, 1024
columns wide if the camera is set for a 10 bit
output mode, and 4096 columns wide if the
camera is set for a 12 bit output mode. (This
means that if the camera is set for a 10 or a 12 bit
output mode, only part of a gradient will be
displayed.)
The left vertical gradient begins on column 1. The
pixels in column 1 have a value of 0, the pixels in
column 2 have a value of 1, the pixels in column
3 have a value of 2, and so on. This pattern
continues until column 256 (8 bit mode), where
the pixels have a value of 255, or column 696 (10
or 12 bit mode), where the pixels have a value of
695.
In 8 bit mode, a second vertical gradient begins
in column 257. The pixels in column 257 have a
value of 0, the pixels in column 258 have a value
of 1, the pixels in column 259 have a value of 2,
and so on. This pattern continues until column
512 where the pixels have a value of 255.
In 8 bit mode, a third vertical gradient begins in
column 513. The pixels in column 513 have a
value of 0, the pixels in column 514 have a value
of 1, the pixels in column 515 have a value of 2,
and so on. This pattern continues until column
696 where the pixels have a value of 183.
Horizontal Gradients
All of the horizontal gradients on the right side of
the image are 696 columns wide.
In 8 bit mode:
• The pixels in the top line of the top gradient
(image line 1040) have a gray value of 0, the
pixels in line 1039 have a gray value of 1, the pixels in line 1038 have a gray value of 2, and
so on. This pattern continues until line 785, where the pixels have a gray value of 255.
Figure 3-24: Test Image 3 (8 bit mode)
Figure 3-25: Test Image 3 (10 bit mode)
Figure 3-26: Test Image 3 (12 bit mode)