Saturation and Luminance Operation
The optional RGB Output Design firmware for OnSemi sensor Nano models provides two additional
control features for color control. In simple terms these controls are:
Saturation — Increases the color intensity relative to the default gain level
•
Luminance — Increases the overall luminance gain level
•
Examples of Saturation and Luminance effects with integer value settings are shown below.
Saturation Control Examples
Saturation=1
Luminance Control Examples
Saturation=2, Luminance=1
The Math behind the Saturation/Luminance Controls
Nano RGB firmware combines user control inputs with captured video RGB values using the
formulas described below.
Luminance is applied to the Y and chrominance (saturation) is applied to Cb (U) and Cr (V).
9798 + 19235 + 3736
=
32768
−5529 − 10855 + 16384
=
32768
16384 − 13720 − 2664
=
32768
Nano Series GigE Vision Camera
Saturation=2
Saturation=2, Luminance=2
ℎ +
ℎ +
Saturation=3
Where:
X is 128 if data path bit-depth is 8-bit
X is 512 if data path bit-depth is 10-bit
X is 2048 if data path bit-depth is 12-bit
Operational Reference
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