BM-500CL / BB-500CL
- 15 -
6.2.
Pre-process functions
BM-500CL/BB-500CL has several pre-processing functions. The output from the camera is
selectable to 8-,10- or 12-bits but video is digitized to 14-bit internally.
The pre-processing functions make use of the 14-bit video. Featured functions are: white balance
(BB-500CL only), R/L channel balance, blemish compensation, gain control and LUT (Look Up
Table) for Gamma and Knee correction.
6.2.1.
Bayer White Balance
Normally, the raw Bayer color signals are sent to the host as they are. In the host, the signals are
interpolated to generate an RGB image and perform white balance.
In order to offload the host, the BB-500CL can adjust Gr, R , Gb and B levels individually to get
the white balance for the Bayer output signal. The gain is fixed to 1.0 for BM-500CL.
White Balance Type
Setting
Preset ( 3200K , 4600K , 5600 K )
AWBM=1 ( 3200), = 2 (4600), = 3 (5600 )
One –Push White Balance
AWBM=0 ( One-push),
AWB = 1 for activate ( 2600K to 6500K)
Manual
Set by pixel gain ( R1/R2, GR1/GR2, B1/B2, GB1/GB2)
White Balance Area s
Select 6 divided area for both L and R channels
Note : Bayer white balance should be adjusted in continuous mode.
6.2.2.
L/R channel balance
BM-500CL/BB-500CL has dual-tap readout architecture, with a Left (L) and Right (R) channel. In
order to achieve the same gain and black level for both channels, the BM-500CL/BB-500CL has
built -in R/L channel balance function. The function is activated by a “one-push” software
command.
Channel Balance Type
Setting
One-Push Gain (Auto White Level Adjust, AWA)
AWA=1 for activation
One-Push Auto Black Level Adjust (ABA)
ABA=1 for activation
Note: 1. Channel Balance adjustment should be done in the continuous mode.
2. One push channel balance should be done the following order, ABA and then AWA.
6.2.3.
Automatic output level controls
These functions to help to maintain a constant output level in accordance with ambient brightness
changes. The two functions are AGC (Auto Gain Control) and ASC (Auto Shutter Control).
AGC and ASC can not be used at the same time.
Functions
Setting
Gain Mode (AGC)
AGC=0 ( Manual ) AGC = 1 ( AGC ON )
Auto Shutter Control (ASC)
ASC= 0 ( OFF ) ASC = 1 ( ON )
Note : Only available in the continuous mode.
