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Figure 27. Example of different multi-slope integration settings
If the HDR functionality is switched off then the sensor will have a linear response to the light. If HDR
is enabled then the slope of the response curve will get a "knee-point". When the light level gets
above this level then the sensor gets less sensitive to the light, (less steep curve) and will be able to
image what would otherwise result in an over saturated/clipped image.
Multi-slope integration will also result in a "compression" of response of the sensor above the knee-
point, and the "contrast" of the bright part of the image will be lower when the HDR level is increased.
Another side-effect is also that the images will get a "pinkish tint", so that the color fidelity of the
brighter areas of the image will be lower.
Figure 27 above shows two settings:
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Reset time at 70%/85% of the exposure time: This settings makes the sensor capable of
coping with approximately twice the amount of light compared to the linear response (HDR
OFF)
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Light level (fL)
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Light level (fL)
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ON, Level 6, Reset 70%/85%
ON, Level 6, Reset 80%/90%
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ON, Level 6, Reset 70%/85%
ON, Level 6, Reset 80%/90%
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