National Instruments ISC-1783, User Manual

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There are multiple ways to adjust the black level:
•
MAX—Use the settings on the Camera Attributes tab of the device configuration page.
• Vision Builder AI—Use the settings on the Advanced tab of the Acquire Image (Smart
Camera) step.
Look-up Table
A look-up table (LUT) transformation maps pixel values in the source image into other values
in the transformed image. For example, you can use a LUT transformation to improve the
contrast and brightness of an image. Color models of the ISC-178x allow you to define a LUT
for each color plane in the RGB color space.
To enable a LUT in MAX, use the LUT Controls on the Camera Attributes tab of the device
configuration page. Vision Builder AI does not support LUT editing for the ISC-178x.
Image Sensor Maintenance
Do not touch the image sensor by hand or with other objects. The sensor can be damaged by
electrostatic discharge (ESD), body oils, and particulate matter.
Use a lens mount cover whenever a lens is not mounted on the camera to protect the sensor
from dust and dirt.
Avoid drastic temperature changes to prevent dew condensation.
When necessary, use the following procedure to clean the sensor at a workstation equipped
with anti-ESD facilities. If dust sticks to the sensor, first attempt to blow it off from the side of
the sensor using ionized air. If oils are present on the sensor, clean the sensor with a cotton bud
and ethyl alcohol. Be careful not to scratch the glass. Use only one pass over the glass per
cotton bud to minimize the risk of recontamination and scratching.
Acquiring Images
This section contains information about the main components of acquiring images with the
ISC-178x—triggering, exposure and lighting, and image readout—and explains the
relationships between them.
Triggering
You can configure the ISC-178x to acquire images based on internal timing or an external
trigger signal. When using internal timing, the ISC-178x will trigger the acquisition using an
on-board clock that runs at a constant rate. Once the acquisition is started, images will be
acquired without any external stimulus. When using external triggering, the acquisition of each
frame is tied to the occurrence of the configured external event. The rate of the acquisition is
determined by the rate of the external event. In both cases, the ISC-178x can acquire images at
up to the maximum frame rate.
Related Information
Connecting to Lighting Devices on page 12
Determining the Maximum Frame Rate on page 22
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