Setting⑨: White Correction - Mitsubishi Electric KD Series User Manual

Address
Register name
7070 WhiteCorrectionEnable
7074 WhiteTarget_R
7078 WhiteTarget_G
707C WhiteTarget_B
7080 WhiteCorrectionExecute
7084 WhiteCorrectionExtraTriger R/W
5-2-10 White correction
[Funcion]
This function is to correct variation of output from sensor IC
pixel by pixel caused by variation of illumination strength
and Pixel sensitivities . It makes all output of pixels uniform.
Refer chapter 2-3. , "how to use CIS" .
Image data when scanning white reference Object
DVp0(n): output of n-th Pixel
Pixel
data output after White correction
pixel
TM-XH719C
5-2 Setting⑨: White correction
※When operating Dark/White correction, input external sync. signal continuously, or conduct with internal sync. mode.
R/W Val
R/W 0 or 1
R/W 0 to 4095 Set Red White Correction Target value
R/W 0 to 4095 Set Green White Correction Target value
R/W 0 to 4095 Set Blue White Correction Target value
R/W 1
0 or 1
White target
GenICam® is a trademark of EMVA (European Machine Vision Association)
COPYRIGHT©2017-2020 MITSUBISHI ELECTRIC CORPORATION. ALL RIGHTS RESERVED.
Set White Correction On/Off
0:OFF /1:ON
Generate White Correction data (Normal Trigger mode)
Generate White Correction data (External Trigger mode)
0:END / 1:START
There are two (2) types of procedures to generate White correction
data as follows.
1) Normal Trigger mode: WhiteCorrectionExecute
White correction data generation sequence is initiated by executing
"WhiteCorrection Execute" over GenICam® . The White correction data
(average of 32 lines of pixel data) is save on the product.
2) External Trigger mode: WhiteCorrectionExtraTriger
White correction data generation sequence is initiated by providing a start
command at "WhiteCorrectionExtra Trigger" over GenICam® interface. The
White correction data (maximum values of the average of 32 lines of pixel data
until the end command is provided to CIS) are saved on this product.
"WhiteTarget_R,G,B" is a register to set a target value of the
output of White Correction ON when CIS scans a white chart. The
target value is based on 12 bit depths.
[Remark]
1) To prepare new White correction data , start to send command after
turning on dark correction function under scanning white reference object
having uniform reflection ratio .
2) Scanning Image has some unusual strips by using incorrect white
correction data caused by scanning scratches , dirt and dusts on white
reference object when re-generate white correction data.
3) For products with DeviceFirmwareVersion 2. *. *. *, this product has
memory for saving correction data every resolution as same as dark
correction. The white correction data which is applied for CIS is
automatically changed when resolution is changed.
Result Initial
0
4000
4000
4000
-
0
81