SP-20000M-PMCL / SP-20000C-PMCL
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Output Data = Video IN x LUT data
Fig.37 LUT data processing method
8.4 Gamma
This command is used to set gamma between gamma 0.45 and gamma 1.0 (OFF).
8 steps are provided. The gamma value is an approximate value.
Fig.35 Gamma correction
8.5 Shading Correction
This function compensates for shading (non-uniformity) caused by the lens or the light source
used. This compensation can be performed even if shading issues are not symmetrical in
horizontal and/or vertical directions.
There are two methods of correction.
Flat shading correction:
The method to compensate the shading is to measure the highest luminance level in the image
and use that data as the reference. Luminance levels of other areas are then adjusted so that
the level of the entire area is equal. The block for compensation is 20 blocks (H) x 15 blocks (V)
and each block contains 256 x 256 pixels. The complementary process is applied to produce the
compensation data with less error.
画素欠陥が
If there is no data, use
adjacent data on both sides
Average
data
is
used
for
compensation