LQ-050CL
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To correct for PRNU, the camera’s internal correction circuit captures one or several
lines of data under non-saturated illuminated conditions (not more than 80% of maximum
- recommend level is half of maximum), and the average across the line is calculated.
Based on this average, coefficients are then generated for each individual pixel. The
coefficient has the function of multiplying the pixel output with a factor greater or less
than 1. These coefficients are stored in a non-volatile memory, and are therefore
maintained after power down.
7.26. Command PGS -
Request Status After Pixel Gain Correction
This command returns the status of the pixel gain correction, with the following
parameters:
0=Not completed yet
1=Succeeded
2=Error1: Image too bright
3=Error2: Image too dark
4=Error3: Timeout occurred
7.27. Command SDC – Select Shading Correction Mode
This function enables (or disables) shading correction.
Settings:
0 = off (Bypass) (Default)
1 = Factory setting
2 = User area
Associated functions:
Commands PGR, SDR and SDS
7.28. Command SDR – Run Shading Correction
This function initiates automatic shading correction, and stores the result to the user
area. This function should be used together with the flat-field correction (commands PGC
and PGR). There are two types of shading correction: Individual R, G and B channel
correction and chromatic shading correction.
After correction: flat response from pixel to
pixel
Average
Summary of Contents for LQ-050CL
Page 10: ...LQ 050CL 9 ...
