Auto Functions; Common Characteristics - Basler Racer User Manual

AW00118508000
8.5

Auto Functions

8.5.1

Common Characteristics

Auto functions control image properties and are the "automatic" counterparts of certain features
which normally require "manually" setting the related parameter values. Auto functions are
particularly useful when an image property must be adjusted quickly towards a specific target value
and when an image property must be kept constant during acquisition.
On racer cameras, two auto functions are available: Gain Auto and Exposure Auto.
By specifying a portion of the sensor line and a specific number of consecutive lines to be acquired,
you can define an auto function area of interest (auto function AOI). Each auto function uses the
pixel data from the auto function AOI to automatically adjust a parameter value towards a set target
value and, accordingly, to control the related image property.
The auto functions automatically adjust a parameter value until the related image property reaches
a target value. The manual setting of the parameter value is not preserved. For example, when the
gain auto function adjusts the gain parameter value, the manually set gain parameter value is not
preserved.
For both auto functions, the target value can be set. Also, the limits between which the related
parameter value will be automatically adjusted can be set. For example, the gain auto function lets
you set an average gray value as a target value and also set a lower and an upper limit for the gain
parameter value.
Both auto functions can operate at the same time. For more information, see the following sections
describing the individual auto functions.
A target value for an image property can only be reached if it is in accord with all
pertinent camera settings and with the general circumstances used for acquisition.
Otherwise, the target value will only be approached.
For example, with a short exposure time, insufficient illumination, and a low setting
for the upper limit of the gain parameter value, the Gain Auto function may not be
able to achieve the target average gray value setting.
You can use an auto function when binning is enabled. An auto function uses the
binned pixel data and controls the image property of the binned line.
For more information about binning, see Section 8.7 on
Basler racer Camera Link
Features
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