Operation and Features
BASLER L304
kc 3-59
Draft
3.11.11 Test Image Nine (Interleaved Gradient)
Test image nine is formed with a vertical odd/even gradient that ranges from 0 to 255 and repeats
every 512 pixels as shown in Figure 3-38. The odd pixel gradient starts with 0 and steps up, that
is, the red, green and blue values for pixel 1 are all 0, the red, green and blue values for pixel 3
are all 1, the red, green and blue values for pixel 5 are all 2, and so on. The even pixel gradient
starts at 255 and steps down, that is, the red, green and blue values for pixel 2 are all 255, the
red, green and blue values for pixel 4 are all 254, the red, green and blue values for pixel 6 are all
253, and so on.
At pixels 256 and 257, the red green and blue values are all 128. At pixel 511, the red, green and
blue values are all 255 and at pixel 512, the red, green and blue values are all 0. At pixels 513,
the red, green and blue values are all 0 and at pixel 514, the red green, and blue values are all
255. To the human eye, the gradient appears to be a varying gray field with a white vertical line
every 512 pixels.
Test image nine is useful for checking the integrity of the data transmitted by the camera. If you
capture lines and examine the pixel values in the captured lines, the values should be exactly as
described above.
Figure 3-38: Formation of Test Image Nine
Figure 3-39: Test Image Nine
L
The description of the pixel values in test image 10 is only valid when the camera is
set for 8 bit output. If the camera is set for 10 bit output, the gradients range from 0
to 1023 and the pattern repeats every 2048 pixels
To Next Page
Loading...
Need help?
General
