AW00097603000 Color Creation and Enhancement
Basler aviator GigE 113
8.3 Color Enhancement Features
8.3.1 White Balance
The white balance feature lets you adjust the balance of red, green, and blue such that white objects
in the camera’s field of view appear white in the acquired images.
Setting the White Balance
With the white balancing scheme used on these cameras, the red intensity, green intensity, and blue
intensity can be individually adjusted. For each color, a Balance Ratio Abs parameter is used to set
the intensity of the color. If the Balance Ratio Abs parameter for a color is set to a value of 1, the
intensity of the color will be unaffected by the white balance mechanism. If the ratio is set to a value
lower than 1, the intensity of the color will be reduced. If the ratio is set to a value greater than 1,
the intensity of the color will be increased. The increase or decrease in intensity is proportional. For
example, if the Balance Ratio Abs for a color is set to 1.2, the intensity of that color will be increased
by 20%.
The Balance Ratio Abs parameter value can range from 0.00 to 15.9844. But you should be aware
that if you set the balance ratio for a color to a value lower than 1, this will not only decrease the
intensity of that color relative to the other two colors, but will also decrease the maximum intensity
that the color can achieve. For this reason, we don’t normally recommend setting a balance ratio
less than 1 unless you want to correct for the strong predominance of one color.
This section (Section 8.3.1) describes how the camera’s white balance can be
adjusted "manually", i.e., by setting the value of the Balance Ratio Abs parameters
for red, green, and blue.
The camera also has a White Balance Auto function that can automatically adjust
the white balance. Manual adjustment of the Balance Ratio Abs parameters
for red, green, and blue will only work correctly if the Balance White Auto
function is disabled.
For more information about
auto functions in general, see Section 10.7 on page 171.
the Balance White Auto function, see Section 10.7.9 on page 186.
When you are using matrix color transformation and you set the Light Source
Selector parameter to match your light source characteristics, the camera will
automatically make adjustments to the white balance settings so that they are best
suited for the light source you selected.
For more information about matrix color transformation, see Section 8.3.3 on
page 117 and Section 8.3.3 on page 117.
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