High Dynamic Range Mode - JAI AD-131GE User Manual

10.5.2

High dynamic range mode

In this mode, high dynamic range can be achieved by setting a different exposure time for each
sensor. To use this mode, set the sync mode to ―High dynamic range 1, 2, or 3‖.
The combining of the two signals uses the ratio of the shutter value for each sensor as the
coefficient. As the composition process can be done regardless of signal levels, the composed
signal is visibly smooth.
There are three built-in High Dynamic Range modes:

High dynamic range 1
In this mode, the ratio of camera 0 video signal is larger than that of camera 1.
100%
100%

High dynamic range 2
In this mode, 50% of each video level is added to make an output.
100%
100%
Camera 0
Incoming light
Camera 1
Incoming light
Fig.35 Composition of two images
Camera 0
Incoming light
Camera 1
Incoming light
Fig.36 Composition of two images
AD-131GE
Composed video
100%
Incoming light
Composed video
100%
50
Camera 0
Camera 1
50%
Incoming light