Saturation And Luminance Operation - Teledyne m640 User Manual

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
112 • Operational Reference
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
Nano Series GigE Vision Camera