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Operational Reference
Genie_TS_Series GigE Vision Camera
Example of Multi-Slope Operation
With multi-slope mode enabled, for a given user set exposure time, the user chooses the points of
exposure where the sensor response reduces and becomes nonlinear(
multiSlopeKneePositionY
),
plus the point where the sensor response returns to normal (
multiSlopeKneePositionX
). This
effectively acts to extend the dynamic range.
Important considerations are:
This graphic serves only as an illustration to possible Multi-Slope Mode solutions for imaging
problems. Any solution will have tradeoffs.
The two variables will interact requiring the user to make multiple changes to converge to a
solution.
Only pixels with DN values exceeding the setting for
multiSlopeKneePositionY
(within the user
set exposure time) will be affected by the multi-slope function. All others maintain their linear
response typical with a standard exposure.
The nonlinear reduced response zone will affect the perceived image quality. The user needs to
locate this zone where gray level linearity is not critical for the imaging solution.
The actual sensor response through the nonlinear zone into the final linear ramp cannot be
represented truthfully as two hard break points. Transitions are more gradual, therefore the
nonlinear zone spans a larger number of image DN. Typically, the sensor will be up to 4 DN
higher through the nonlinear zone than calculated using the
multiSlopeKneePositionY
setting.
Содержание TS-C2500
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