Teledyne Genie Monochrome Series M1280, User Manual

Page: 139 / 279

Nano Series GigE Vision Camera Operational Reference
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137
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 Saturation=2 Saturation=3
Luminance Control Examples
Saturation=2, Luminance=1 Saturation=2, Luminance=2
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).
𝒀𝒀 =
9798 𝑥𝑥 𝑅𝑅 + 19235 𝑥𝑥 𝐺𝐺 + 3736 𝑥𝑥 𝐵𝐵
32768
𝑥𝑥 𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿 𝐹𝐹𝐿𝐿𝐿𝐿𝐹𝐹𝐹𝐹𝐹𝐹
𝑪𝑪𝑪𝑪 =
−5529 𝑥𝑥 𝑅𝑅 − 10855 𝑥𝑥 𝐺𝐺 + 16384 𝑥𝑥 𝐵𝐵
32768
𝑥𝑥 𝐶𝐶ℎ𝐹𝐹𝐹𝐹𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿 𝐹𝐹𝐿𝐿𝐿𝐿𝐹𝐹𝐹𝐹𝐹𝐹 + 𝑋𝑋
𝑪𝑪𝑪𝑪 =
16384 𝑥𝑥 𝑅𝑅 − 13720 𝑥𝑥 𝐺𝐺 − 2664 𝑥𝑥 𝐵𝐵
32768
𝑥𝑥 𝐶𝐶ℎ𝐹𝐹𝐹𝐹𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿𝐿 𝐹𝐹𝐿𝐿𝐿𝐿𝐹𝐹𝐹𝐹𝐹𝐹 + 𝑋𝑋
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