Setting⑧: Dark Correction - Mitsubishi Electric KD Series User Manual

Address
Register name
7050 DarkCorrectionEnable R/W
7054 DarkCorrectionExecute R/W
5-2-9 Dark correction
[Function]
Corrects the variation of the dark outputs pixel by pixel
(Dark output: Output based on LED OFF)
For more detail, refer Chapter 2-3.
Image data with LED turned off
DVd0(n): "n" th pixel
Black output
DVp'(n) = DVp(n) –Dvd0(n)
Image data turned off LED after Dark correction
TM－XJ101C
5-2 Setting⑧: Dark correction
※When operating Dark/White correction, input external sync. signal continuously, or conduct with internal sync. mode.
R/W Val
Dark correction On/Off setting
0 or 1
1 Generate Dark Correction Data
Pixel
Pixel
0:OFF /1:ON
The following procedures shows how to generate Dark correction
data.
1) Normal Trigger mode: DarkCorrectionExecute
Dark correction generation sequence is initiated by executing
"DarkCorrectionExecute".
lines of pixel data) is save on this product.
For products with DeviceFirmwareVersion 2. *. *. *, this product has
memory for saving correction data every resolution. Correction data
is saved in memory for current resolution by this operation. If using
multiple resolution, execute this operation in each resolution. The
correction data which is applied for CIS is automatically changed
when resolution is changed.
[Remark]
1) CIS has an initial dark correction data in factory setting memory.
After turning on power, the initial dark correction data are
booted in ASIC and FPGA registers automatically and dark
correction function becomes available.
2) Periodic Re-generation of dark correction data is recommended
caused by Values of Black output change by Temperature and
Line period etc.
3) Scanning Image has some unusual strips by using incorrect
dark correction data .
4) White correction has to be turned on under the condition that
dark correction is turned on .
5) Refer the function specification about how to generate new
dark correction data .
Result
The Dark correction data (average of 32
© Mitsubishi Electric Corporation
Initial
0
-
72