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Description of the data path
Auto shutter
The algorithm is based on the assumption that the R-G-B component sums of
the samples are equal, i.e., it assumes that the mean of the sampled grid pix-
els is to be monochrome.
In combination with auto white balance, PIKE cameras are equipped with
auto-shutter feature.
When enabled, the auto shutter adjusts the shutter within the default shutter
limits or within those set in advanced register F1000360h in order to reach
the reference brightness set in auto exposure register.
Note
Target grey level parameter in SmartView corresponds to
Auto_exposure register 0xF0F00804 (IIDC).
Increasing the auto exposure value increases the average
brightness in the image and vice versa.
Increasing the auto exposure 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.
PIKE Technical Manual V4.1.0
102
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