Standard Features AW00097603000
246 Basler aviator GigE
10.16 Test Images
All cameras include the ability to generate test images. Test images are used to check the camera’s
basic functionality and its ability to transmit an image to the host PC. Test images can be used for
service purposes and for failure diagnostics. For test images, the image is generated internally by
the camera’s logic and does not use the optics, the imaging sensor, or the ADCs. Five test images
are available (for color cameras six test images).
The Effect of Camera Settings on Test Images
When any of the test image is active, the camera’s analog features such as gain, black level, and
exposure time have no effect on the images transmitted by the camera. For test images 1, 2, 3, and
6 the camera’s digital features, such as the luminance lookup table, will also have no effect on the
transmitted images. But for test images 4 and 5, the cameras digital features will affect the images
transmitted by the camera. This makes test images 4 and 5 a good way to check the effect of using
a digital feature such as the luminance lookup table.
Enabling a Test Image
With Basler pylon, the Test Image Selector is used to set the camera to output a test image. You
can set the value of the Test Image Selector to enable one of the test images or to "test image off".
You can use the pylon API to set the Test Image Selector from within your application software. The
following code snippets illustrate using the API to set the selector:
// Set for no test image
Camera.TestImageSelector.SetValue( TestImageSelector_Off );
// Set for test image 1
Camera.TestImageSelector.SetValue( TestImageSelector_Testimage1 );
You can also use the Basler pylon Viewer application to easily set the parameters.
For more information about the pylon API and the pylon Viewer, see Section 3 on page 21.
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