MT9M114_16 Datasheet, PDF (36/62 Pages) ON Semiconductor – High-Definition (HD) System-On- A-Chip (SOC) Digital Image Sensor

MT9M114: 1/6-Inch 720p High-Definition (HD) System-On-A-Chip (SOC) Dig-
ital Image Sensor
Sample images below show the benefits of the different AE modes.
Light Background
Average Brightness Tracking or Average Y
Weighted Average Brightnes s(centre)
Adaptive weighted based on zone luma (highlights) Adaptive weighted based on zone luma (lowlights)
Note: This mode is
intended to expose the
background vs. the
In the use case above the Adaptive weighted for lowlights exposes the face slightly better
when compared to the Weighted Average Brightness.
However, if the foreground subject is moved off-center:
Weighted Average Brightness (centre)
(lowlights)
Adaptive weighted based on zone luma
MT9M114/D Rev. 11, 2/16 EN
This shows the advantage of using the Adaptive Weighted AE for lowlights(ae_rule_algo
= 0x03); when the face moves off center it still is exposed correctly.
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