Test Images; Test Image One (Vertical Stripe Pattern) - Basler A400K User Manual

3.12 Test Images

The test image mode is used to check the camera's basic functionality and its ability to transmit
an image via the video data cable. The test image can be used for service purposes and for failure
diagnostics. In test image mode, the image is generated with a software program and the
camera's digital devices and does not use the optics, CMOS sensor, or ADCs. Four test images
are available.
Note
DSNU and PRNU shading correction produce distortion in the test image. Disable
DSNU and PRNU shading correction before you enable a test image.

3.12.1 Test Image One (Vertical Stripe Pattern)

Test image one is useful for determining if your frame grabber has dropped any columns from your
image.
The stripes in the vertical stripe test pattern are
formed with a gradient that ranges from 0 to 255
(8 bit mode) or 0 to 1023 (10 bit mode). A full stripe
is 256 columns (8 bit mode) or 1024 columns (10 bit
mode) wide. As an exception, the gray values of the
first stripe range from 1 to 255 or from 1 to 1023,
respectively.
The pixels in column one of the first stripe all have a
value of 1. The pixels in column two of the first stripe
all have a value of 2, the pixels in column three of
the first stripe all have a value of 3, and so on. This
pattern continues until column 255 (8 bit mode),
where the pixels have a gray value of 255, or column
1023 (10 bit mode), where the pixels have a value of
1023.
In 8 bit mode, a second stripe begins in column 256. The pixels in column 256 have a gray value
of 0, the pixels in column 257 have a value of 1, the pixels in column 258 have a value of 2, and
so on. This pattern continues until column 511 where the pixels have a gray value of 255.
A third stripe begins in column 512. The pixels in column 512 have a gray value of 0, the pixels in
column 513 have a value of 1, the pixels in column 514 have a value of 2, and so on. This pattern
continues until column 2352 where the pixels have a value of 48.
Basler A400k
DRAFT
Figure 3-18: Test Image One (8 bit)
Basic Operation and Features
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