Instruction manual

Guppy PRO Technical ManualV4.1.0
81
Description of the data path
Color cameras
Setting LUT = OFF effectively makes full use of the 14 bit by bypassing the LUT cir-
cuitry; setting LUT = ON means that the most significant 12 bit of the 14 bit are
used and further down converted to 10 bit. For cameras with 12-bit ADC: the
most significant 10 bit of the 12 bit are used.
White balance
There are two types of white balance:
• one-push white balance: white balance is done only once (not continu-
ously)
• auto white balance (AWB): continuously optimizes the color characteris-
tics of the image
Figure 35: Block diagram color camera
Sensor
Analog
Gain
Analog
Oset
Analog 14 bit
White balance
HIROSE I/O
RS232
Test-Pattern
3 x 8 bit
Camera control
14 bit
LUT
12
10
14 bit
Defect pixel
correction
(only CMOS)
14 bit
Horizontal
masking
(only CCD)
ADC
CMOS: the following functions are integrated in sensor:
Sub-sampling, horizontal masking
Hue
Saturation
Color correction
Color conversion
8 bit
8 bit
8 bit
8 bit
8 bit
8 bit
Color
interpolation
Frame
memory
14 bit
IEEE 1394b
interface
1394b
Camera control
* Some Guppy PRO models deliver 12 bit only.
*