Test Images; Test Image One - Basler L100k User Manual

3.9 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. A test image can be used for service purposes and for failure
diagnostics. In test mode, the image is generated with a software program and the camera's digital
devices and does not use the optics, CCD sensor, VGCs or ADCs. Two test images are available
(see Sections 3.9.1 and 3.9.2).
When using a test image, please also follow the guidelines given in Section 3.9.3.
In addition to the two standard test images, the L100
(see Section 3.6.4).
You can enable the test images using either the Camera Configuration Tool Plus (see Section 4.1)
or use binary commands (see Section 4.2).
With the Camera Configuration Tool Plus, you use the Test Image setting in the Output parameter
group to set the test image.
With binary commands, you use the Test Image command (see Section 4.2.5).

3.9.1 Test Image One

Test image one is formed with an odd/even gray scale gradient that ranges from 0 to 255 and re-
peats every 512 pixels as shown in Figure 3-12. The odd pixel gradient starts at 0 and steps up,
that is, the gray value of pixel 1 is 0, the gray value of pixel 3 is 1, the gray value of pixel 5 is 2,
and so forth. The even gradient starts at 255 and steps down, that is, the gray value of pixel 2 is
255, the gray value of pixel 4 is 254, the gray value of pixel 6 is 253, and so forth.
At pixels 256 and 257, the gray value for both pixels is 128. At pixels 511 and 512, a white odd
pixel is next to a black even pixel. At pixels 513 and 514, a black odd pixel is next to a white even
pixel. To the human eye, the gradient appears to be a varying gray field with a white vertical line
every 512 pixels.
[gray level]
255
0
1
Figure 3-12: Formation of Test Image One
Figure 3-13: Test Image One
BASLER L100
k Series
DRAFT
512
even
odd
also offers a shading data test image mode
k
1536
1024
Operation and Features
2048
[pixel number]
3-31