Hdr Function (Option) - IAI SP-20000C-USB User Manual

8.8

HDR function (Option)

The SP-20000M-USB has a High Dynamic Range function which utilizes built-in sensor characteristics. If
[Exposure Mode] is set to"Timed"and then [HDR Mode] is set to "On", the High Dynamic Range function
is activated. In this mode, it is possible to determine the input level of knee point(s) by using the
exposure time as the reference. 1 or 2 knee points can be defined.
Setting parameters
Knee Point 1
Knee Point 2
Knee Slope 2
Knee Slope 3
Concept drawing to set knee point(s)
LVAL
FVAL
Exposure Active
Output
120%
100%
50%
SP-20000M-USB / SP-20000C-USB
Exposure
Time
[Exposure Time]
2nd Knee Point
1st Knee Point
1/2 →
Less [Exposure Time]÷[Knee Slope 2]
Fig. 48 HDR operation
Read out Time
time
Knee Slope 1 Time =
[Exposure Time]－[Knee Slope 2 Time]－[Knee Slope 3 Time ]
Knee Slope 2 Time =
([Exposure Time] ÷ [Knee Slope 2]) - [Knee Slope 3 Time]
Knee Slope 3 Time =
[Exposure Time] ÷ [Knee Slope 3]
[Knee Point 2] Setting Range
[Knee Point 1] Setting Range
Input
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