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7.2.1
HDR mode (Only available on “BHx” Models)
The High Dynamic Range Mode is using the top and bottom couple of lines of the sensor in a different way in
order to get 2 different exposures that can be combined to give a High Dynamic range result :
There
are three different possible outputs
when the HDR mode is set :
Single Line Bottom only : Line “C” only is outputted to check the High Levels
Single Line Top only : Line “A+B” is outputted to check the Low Levels
Single Line HDR : The Camera outputs the HDR Line reconstructed from “A+B” and “C” Lines in the camera in
the “HDR” bloc.
The Exposition of the “C” Line is automatically controlled by setting the HDR Ratio :
Ratio 1 : Equivalent to x2 ratio between Top and Bottom or 1 bit in the Dynamic
Ratio 2 : Equivalent to x4 ratio between Top and Bottom or 2 bit in the Dynamic
Ratio 4 : Equivalent to x8 ratio between Top and Bottom or 3 bit in the Dynamic
Ratio 8 : Equivalent to x16 ratio between Top and Bottom or 4 bit in the Dynamic
Line A
Line B
Line C
Line D
These 2 Lines work in TDI mode
and Full Exposure Time
This Line works alone in Controlled exposure Mode
This Line is not used