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Auto gain – ALLIED Vision Technologies Stingray F-504 User Manual

Page 126

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Description of the data path

STINGRAY Technical Manual V4.4.4

124

Auto gain

All Stingray cameras are equipped with auto gain feature.

When enabled auto gain adjusts the gain within the default gain limits or
within the limits set in advanced register F1000370h in order to reach the
brightness set in auto exposure register as reference.

Increasing the auto exposure value (aka target grey value) increases the
average brightness in the image and vice versa.

The applied algorithm uses a proportional plus integral controller (PI control-
ler) to achieve minimum delay with zero overshot.

The following tables show the gain and auto exposure CSR.

Note

Configuration

To configure this feature in an advanced register: See

Table 145: Advanced register: Auto gain control

on page

316.